{"title":"CNC Breakers","description":"","products":[{"product_id":"2-pole-mcb-10a-63a-ac-circuit-breaker","title":"2 Pole MCB 10A-63A | AC Circuit Breaker","description":"\u003ch2\u003eCNC 2 Pole MCB — Double Pole Miniature Circuit Breaker (Safety Breaker)\u003c\/h2\u003e\n\u003cp\u003eThe CNC YCB7H 2 pole MCB (miniature circuit breaker) is a double pole breaker that disconnects\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eboth live and neutral\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003esimultaneously — providing complete isolation of the circuit. MCB full form is\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eMiniature Circuit Breaker\u003c\/strong\u003e, and this 2P version is the standard main incoming breaker for single-phase distribution boards across Pakistan.\u003c\/p\u003e\n\u003cp\u003eUnlike a\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/products\/cnc-1-pole-mcb-ac-breaker-ycb7-63a\"\u003e1 pole MCB\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003ewhich only disconnects the live wire, this double pole MCB breaker cuts both live and neutral — essential for circuits fed by generators, inverters, or\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/changeovers\"\u003echangeover switches\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003ewhere the neutral may carry dangerous voltage during a fault. Every single-phase home DB box in Pakistan needs a 2 pole MCB as its main breaker switch.\u003c\/p\u003e\n\u003cp\u003eAvailable from 10A to 63A with C-curve trip response, this safety breaker handles everything from a small sub-main to the main incoming supply for a full Pakistani household. CNC Electric is a trusted MCB breaker brand in Pakistan with a 5-year replacement warranty on all circuit breakers.\u003c\/p\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eMCB — Miniature Circuit Breaker (Double Pole Safety Breaker)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePoles\u003c\/td\u003e\n\u003ctd\u003e2P (Double Pole — disconnects live + neutral)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Ratings\u003c\/td\u003e\n\u003ctd\u003e10A, 16A, 20A, 25A, 32A, 40A, 63A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Voltage\u003c\/td\u003e\n\u003ctd\u003e230V\/400V AC, 50Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBreaking Capacity\u003c\/td\u003e\n\u003ctd\u003e6kA at 230V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTrip Curve\u003c\/td\u003e\n\u003ctd\u003eC-curve (trips at 5-10× rated current)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003ctd\u003eIEC 60898-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003e35mm DIN rail (standard for all Pakistani DB boxes)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Width\u003c\/td\u003e\n\u003ctd\u003e2 modules (36mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal Capacity\u003c\/td\u003e\n\u003ctd\u003eUp to 25mm² cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-5°C to +40°C (derates above 40°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMechanical Life\u003c\/td\u003e\n\u003ctd\u003e20,000 operations\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElectrical Life\u003c\/td\u003e\n\u003ctd\u003e10,000 operations\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e5-year replacement warranty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDelivery\u003c\/td\u003e\n\u003ctd\u003eFree delivery across Pakistan on orders over Rs.10,000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eWhy You Need a 2 Pole (Double Pole) Breaker\u003c\/h2\u003e\n\u003cp\u003eIn Pakistan's electrical system, a single pole breaker only disconnects the live wire — the neutral remains connected. This is fine for individual branch circuits. But for your\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003emain incoming breaker\u003c\/strong\u003e, you need both wires disconnected for these critical reasons:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNeutral failure protection:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIn Pakistani wiring, neutral failures are extremely common — especially in areas with shared neutral or underground cable problems. When the neutral breaks, some appliances can receive up to 440V instead of 220V, destroying AC compressor boards (Rs.15,000-35,000 repair), refrigerator circuits, and electronics. A 2 pole MCB as the main breaker allows you to disconnect the entire circuit — both live and neutral — during maintenance or emergencies.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGenerator and inverter circuits:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eWhen switching between WAPDA and generator via a\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/changeovers\"\u003echangeover switch\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eor\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/ats\"\u003eautomatic transfer switch (ATS)\u003c\/a\u003e, the neutral from the generator is different from the WAPDA neutral. A 2 pole breaker ensures complete isolation of both wires when switching sources.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSolar inverter AC output:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe AC output from your solar inverter needs a 2 pole MCB before entering the DB box. This ensures the inverter is fully isolated during maintenance — critical for safety because the inverter generates its own live and neutral.\u003c\/p\u003e\n\u003ch2\u003eWhich Rating for Which Application\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eRating\u003c\/th\u003e\n\u003cth\u003eCable Size\u003c\/th\u003e\n\u003cth\u003eCommon Use as 2 Pole Breaker in Pakistan\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e10A\u003c\/td\u003e\n\u003ctd\u003e1.5mm²\u003c\/td\u003e\n\u003ctd\u003eSub-circuit for lighting only, small UPS output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e16A\u003c\/td\u003e\n\u003ctd\u003e2.5mm²\u003c\/td\u003e\n\u003ctd\u003eDedicated appliance circuit (washing machine, geyser on its own line)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e20A\u003c\/td\u003e\n\u003ctd\u003e2.5mm²\u003c\/td\u003e\n\u003ctd\u003e1-1.5 ton inverter AC on dedicated circuit with full isolation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e25A\u003c\/td\u003e\n\u003ctd\u003e4mm²\u003c\/td\u003e\n\u003ctd\u003eSmall inverter\/UPS output, 1.5 ton AC dedicated circuit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e32A\u003c\/td\u003e\n\u003ctd\u003e6mm²\u003c\/td\u003e\n\u003ctd\u003eSub-main feeder to secondary DB, small shop main, EV charger circuit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e40A\u003c\/td\u003e\n\u003ctd\u003e10mm²\u003c\/td\u003e\n\u003ctd\u003eMain incoming breaker for small home (2-3 ACs), solar inverter output up to 8kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e63A\u003c\/td\u003e\n\u003ctd\u003e16mm²\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eStandard main incoming breaker\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efor typical Pakistani single-phase home, large shop, solar inverter up to 15kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eMost common choice:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e63A as the main incoming breaker for a Pakistani home. This sits at the top of your DB box, before all branch\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/products\/cnc-1-pole-mcb-ac-breaker-ycb7-63a\"\u003e1 pole MCBs\u003c\/a\u003e. If your total load exceeds 63A, you need an\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/ac-mccb-breakers\"\u003eMCCB breaker\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003einstead.\u003c\/p\u003e\n\u003ch2\u003e1 Pole vs 2 Pole vs 4 Pole — When to Use Which\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003cth\u003eDisconnects\u003c\/th\u003e\n\u003cth\u003eUse When\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e1 Pole MCB\u003c\/td\u003e\n\u003ctd\u003eLive only\u003c\/td\u003e\n\u003ctd\u003eBranch circuits: individual lights, sockets, single appliance\u003c\/td\u003e\n\u003ctd\u003eRs.425\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e2 Pole MCB (this product)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eLive + Neutral\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eMain breaker, generator\/inverter circuits, full isolation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eRs.850\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3 Pole MCB\u003c\/td\u003e\n\u003ctd\u003e3 phases (L1+L2+L3)\u003c\/td\u003e\n\u003ctd\u003eThree-phase motor circuits, industrial without neutral\u003c\/td\u003e\n\u003ctd\u003eRs.1,300\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4 Pole MCB\u003c\/td\u003e\n\u003ctd\u003e3 phases + Neutral\u003c\/td\u003e\n\u003ctd\u003eThree-phase main breaker, solar inverter 3-phase output\u003c\/td\u003e\n\u003ctd\u003eRs.1,850\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eTypical Pakistani Home DB Box Layout\u003c\/h2\u003e\n\u003cp\u003eA properly wired single-phase home in Lahore, Karachi, Islamabad, or any city in Pakistan should have this DB box structure:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePosition 1 (top):\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e2 Pole MCB 63A (this product) — main incoming breaker. All power flows through this first. Install a\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/pages\/voltage-protector-finder\"\u003eVA voltage protector\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eimmediately after this breaker for voltage protection.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePosition 2-12 (branches):\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/products\/cnc-1-pole-mcb-ac-breaker-ycb7-63a\"\u003e1 Pole MCBs\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003e(Rs.425 each) — one per circuit. Typical home: 10A for lighting, 16A for sockets, 20A for each AC, 16A for geyser, 10A for refrigerator.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAdd for safety:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/rccb\"\u003eRCBO earth leakage breaker\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003efor bathroom\/kitchen circuits,\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/spd\"\u003eSPD surge protector\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eat the main panel for lightning protection. Browse our\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/solar-bundles\"\u003esolar DB bundles\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003efor pre-configured kits that include all these components.\u003c\/p\u003e\n\u003ch2\u003eWhy C-Curve Is the Standard in Pakistan\u003c\/h2\u003e\n\u003cp\u003eMCB trip curves define how much inrush current the breaker tolerates before tripping:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eTrip Curve\u003c\/th\u003e\n\u003cth\u003eTrips At\u003c\/th\u003e\n\u003cth\u003eBest For\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eB-curve\u003c\/td\u003e\n\u003ctd\u003e3-5× rated current\u003c\/td\u003e\n\u003ctd\u003ePurely resistive loads only — rarely used in Pakistan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eC-curve\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e5-10× rated current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eStandard for all general circuits — handles AC\/motor startup inrush\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eD-curve\u003c\/td\u003e\n\u003ctd\u003e10-20× rated current\u003c\/td\u003e\n\u003ctd\u003eHeavy inrush — industrial\/factory circuits only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eWhat This Breaker Does NOT Protect Against\u003c\/h2\u003e\n\u003cp\u003eA 2 pole MCB protects against\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eoverload\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eshort circuit\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eonly. It does NOT protect against:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVoltage fluctuation\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— If WAPDA voltage spikes to 280V or drops to 140V, the MCB will not react. Install a\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/pages\/voltage-protector-finder\"\u003eVA voltage protector (Rs.1,700-2,000)\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eimmediately after this 2 pole main breaker. The VA device monitors voltage 24\/7 and disconnects if it goes outside safe range — protecting your AC, fridge, and electronics from burning.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectric shock \/ earth leakage\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— If someone touches a live wire, 30mA flowing through the body will not trip this MCB. You need an\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/rccb\"\u003eRCBO earth leakage breaker\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eon bathroom, kitchen, and outdoor circuits.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLightning and surge\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— Thousands of volts from a nearby lightning strike will pass right through the MCB. Install an\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/spd\"\u003eSPD surge protection device\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eat the main panel.\u003c\/p\u003e\n\u003ch2\u003eRelated Products\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBranch circuit breakers →\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/products\/cnc-1-pole-mcb-ac-breaker-ycb7-63a\"\u003e1 Pole MCB 2A-63A (Rs.425)\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eCompact 1P+N in one module →\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/ac-breaker\"\u003e1P+N MCB 10A-40A (Rs.825)\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eThree-phase circuits →\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/products\/cnc-3p-mcb-ac-circuits-breaker-ycb7h-63\"\u003e3 Pole MCB (Rs.1,300)\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eor\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/products\/cnc-4p-ac-mcb-circuit-breaker-ycb7h-63\"\u003e4 Pole MCB (Rs.1,850)\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eLoad above 63A →\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/ac-mccb-breakers\"\u003eMCCB breakers 100A-1250A\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eVoltage protection →\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/pages\/voltage-protector-finder\"\u003eVA Protector (Rs.1,700-5,200)\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eAutomatic WAPDA-generator switching →\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/ats\"\u003eATS Automatic Transfer Switches\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eManual generator switching →\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/changeovers\"\u003eChangeover Switches\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eSolar DC side →\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/dc-breaker\"\u003eDC circuit breakers\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003e(never use AC breaker on DC)\u003c\/li\u003e\n\u003cli\u003eComplete DB setup →\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/db-boxes\"\u003eDB boxes\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003e+ breakers\u003c\/li\u003e\n\u003cli\u003eRead our guide →\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/blogs\/guides\/types-of-circuit-breakers\"\u003eTypes of Circuit Breakers in Pakistan — Complete Guide\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWhat is a 2 pole MCB? What is double pole breaker?\u003c\/h3\u003e\n\u003cp\u003eA 2 pole MCB (double pole breaker) is a miniature circuit breaker that disconnects both the live wire and the neutral wire at the same time. MCB full form is Miniature Circuit Breaker. The \"2 pole\" means it has two switching mechanisms linked together — when it trips or is switched off, both poles open simultaneously. In Pakistan, electricians call it a \"double pole breaker\" or \"DP breaker\" or simply \"2P MCB\". It's the standard main incoming breaker switch for single-phase home and shop DB boxes.\u003c\/p\u003e\n\u003ch3\u003eWhy use 2 pole MCB instead of 1 pole as main breaker?\u003c\/h3\u003e\n\u003cp\u003eA 1 pole MCB only disconnects the live wire — the neutral stays connected. In Pakistan, neutral failures are common and can send dangerous voltage through the neutral wire. With a 2 pole MCB as your main breaker, when you switch it off for maintenance or it trips during a fault, both wires are completely disconnected — zero voltage in your DB box. This is essential for safe maintenance and for circuits connected to generators or solar inverters where the neutral path differs from WAPDA supply.\u003c\/p\u003e\n\u003ch3\u003eWhat size 2 pole MCB for Pakistani home main breaker?\u003c\/h3\u003e\n\u003cp\u003eFor most single-phase homes in Pakistan, a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e63A 2 pole MCB\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis the standard main incoming breaker. This handles a typical household with 2-3 ACs, geyser, refrigerator, washing machine, and general lighting\/sockets. If your home has more than 3 ACs or heavy commercial loads, you may need an\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/ac-mccb-breakers\"\u003eMCCB breaker\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003erated at 100A or higher.\u003c\/p\u003e\n\u003ch3\u003eWhat is the 2 pole 63A MCB price in Pakistan?\u003c\/h3\u003e\n\u003cp\u003eThe CNC 2 Pole 63A MCB is available at Rs.850 at CNC Electric Pakistan. Competitor brands: Schneider Domae 2P 63A typically costs Rs.1,800-2,200, and Chint 2P 63A costs Rs.1,000-1,200. CNC offers the same IEC 60898-1 certified performance with 6kA breaking capacity at approximately 50-60% lower price, with a 5-year replacement warranty included.\u003c\/p\u003e\n\u003ch3\u003eCan I use a 2 pole MCB for a generator changeover circuit?\u003c\/h3\u003e\n\u003cp\u003eYes — a 2 pole MCB is essential on both the WAPDA side and the generator side of a manual\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/changeovers\"\u003echangeover switch\u003c\/a\u003e. Each source needs its own 2P MCB for isolation. When switching between sources, you turn off one 2P breaker before turning on the other. For automatic switching, use an\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/ats\"\u003eATS (Automatic Transfer Switch)\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003ewhich handles this in under 50 milliseconds.\u003c\/p\u003e\n\u003ch3\u003eDo I need a 2 pole MCB for my solar inverter?\u003c\/h3\u003e\n\u003cp\u003eYes. The AC output from your solar inverter must pass through a 2 pole MCB before entering your DB box. This ensures complete isolation of the inverter during maintenance — critical for safety because the inverter generates its own live and neutral even when WAPDA is off. For the DC side (panels to inverter), you need separate\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/dc-breaker\"\u003eDC circuit breakers\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003erated for your system voltage (500V, 1000V, or 1500V). Pair with an\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/fire-extinguisher\"\u003eaerosol fire extinguisher\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003efor added panel safety. For over and under voltage protection, add a\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/voltage-protectors\"\u003evoltage protector\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eto your board.\u003c\/p\u003e\n\u003ch3\u003eWhat is the difference between 2 pole MCB and 1P+N MCB?\u003c\/h3\u003e\n\u003cp\u003eBoth disconnect live and neutral, but they work differently. A 2 pole MCB has two independent trip mechanisms — both poles are protected and can trip independently on overload. A 1P+N MCB has one protected pole (live) and one switched-only pole (neutral) — the neutral follows the live but doesn't have its own overload detection. For main incoming breakers, a true 2 pole MCB (Rs.850) is recommended over 1P+N (Rs.825) because both poles are independently protected.\u003c\/p\u003e\n\u003ch3\u003eCNC 2 pole MCB vs Schneider — which is better?\u003c\/h3\u003e\n\u003cp\u003eBoth CNC and Schneider manufacture 2 pole MCBs to the same IEC 60898-1 standard with 6kA breaking capacity. Schneider (Domae series) is a European brand with pricing at Rs.1,800-2,200 for a 2P 63A. CNC offers identical certified performance at Rs.850 — more than 50% savings — with a 5-year replacement warranty. For residential and commercial use in Pakistan, either brand provides reliable protection. The choice depends on budget and brand preference.\u003c\/p\u003e","brand":"Solarleaf.pk","offers":[{"title":"10A","offer_id":53465430458733,"sku":null,"price":900.0,"currency_code":"PKR","in_stock":true},{"title":"16A","offer_id":53465430491501,"sku":null,"price":900.0,"currency_code":"PKR","in_stock":true},{"title":"20A","offer_id":53465430524269,"sku":null,"price":900.0,"currency_code":"PKR","in_stock":true},{"title":"25A","offer_id":53465430557037,"sku":null,"price":900.0,"currency_code":"PKR","in_stock":true},{"title":"32A","offer_id":53465430589805,"sku":null,"price":900.0,"currency_code":"PKR","in_stock":true},{"title":"40A","offer_id":53465430622573,"sku":null,"price":900.0,"currency_code":"PKR","in_stock":true},{"title":"63A","offer_id":53465430655341,"sku":null,"price":900.0,"currency_code":"PKR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/8280\/1261\/files\/Screenshot2026-06-18220455.png?v=1781804211"},{"product_id":"3-pole-mcb-20a-63a-ac-circuit-breaker","title":"3 Pole MCB 20A-63A | AC Circuit Breaker","description":"\u003ch2\u003eCNC 3 Pole MCB — Three-Phase Miniature Circuit Breaker\u003c\/h2\u003e\n\u003cp\u003eThe CNC YCB7-63N 3 pole MCB is a three-phase miniature circuit breaker that protects three-phase circuits against overload and short circuit. It handles all three phase conductors (L1, L2, L3) simultaneously in a single trip mechanism, so a fault on any one phase disconnects all three — preventing the single-phasing condition that destroys three-phase motors and compressors.\u003c\/p\u003e\n\u003cp\u003eUnlike the\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/products\/cnc-4p-ac-mcb-circuit-breaker-ycb7h-63\"\u003e4 Pole MCB\u003c\/a\u003e, the 3P version does NOT switch the neutral — use it where neutral is handled separately by a busbar or where the load has no neutral (three-phase motors, delta-connected loads). For three-phase supplies that require neutral switching (3-phase main incomers, star-connected loads), choose the 4 Pole version instead.\u003c\/p\u003e\n\u003cp\u003eRated at 400V AC with C-curve trip response, this MCB is standard equipment in Pakistani commercial, industrial, and agricultural panels — from workshop machinery protection to submersible pump feeders. CNC Electric is a trusted MCB brand in Pakistan with a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e5-year replacement warranty\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eon all circuit breakers.\u003c\/p\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003e3 Pole MCB — Three-phase Miniature Circuit Breaker\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eYCB7-63N (3P)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePoles\u003c\/td\u003e\n\u003ctd\u003e3P (L1 + L2 + L3, no neutral)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Ratings\u003c\/td\u003e\n\u003ctd\u003e16A, 20A, 32A, 40A, 63A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Voltage\u003c\/td\u003e\n\u003ctd\u003e400V AC, 50Hz (3-phase)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBreaking Capacity\u003c\/td\u003e\n\u003ctd\u003e6kA at 400V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTrip Curve\u003c\/td\u003e\n\u003ctd\u003eC-curve (trips at 5-10× rated current)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003ctd\u003eIEC 60898-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003e35mm DIN rail\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Width\u003c\/td\u003e\n\u003ctd\u003e3 modules (54mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal Capacity\u003c\/td\u003e\n\u003ctd\u003eUp to 25mm² cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMechanical Life\u003c\/td\u003e\n\u003ctd\u003e20,000 operations\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElectrical Life\u003c\/td\u003e\n\u003ctd\u003e10,000 operations\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e5-year replacement warranty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eSizing a 3 Pole MCB for Motor Protection\u003c\/h2\u003e\n\u003cp\u003eFor three-phase motor protection, pick a C-curve MCB rated at approximately\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1.25× the motor full-load current\u003c\/strong\u003e. The table below shows typical sizing for Pakistani industrial motors at 400V 3-phase:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eMotor Rating\u003c\/th\u003e\n\u003cth\u003eApprox Full-Load Current\u003c\/th\u003e\n\u003cth\u003eRecommended 3P MCB\u003c\/th\u003e\n\u003cth\u003eCable Size\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e3 HP (2.2 kW)\u003c\/td\u003e\n\u003ctd\u003e~5.5A\u003c\/td\u003e\n\u003ctd\u003e16A\u003c\/td\u003e\n\u003ctd\u003e2.5mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5 HP (3.7 kW)\u003c\/td\u003e\n\u003ctd\u003e~9A\u003c\/td\u003e\n\u003ctd\u003e16A\u003c\/td\u003e\n\u003ctd\u003e2.5mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e7.5 HP (5.5 kW)\u003c\/td\u003e\n\u003ctd\u003e~14A\u003c\/td\u003e\n\u003ctd\u003e20A\u003c\/td\u003e\n\u003ctd\u003e4mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e10 HP (7.5 kW)\u003c\/td\u003e\n\u003ctd\u003e~18-19A\u003c\/td\u003e\n\u003ctd\u003e32A\u003c\/td\u003e\n\u003ctd\u003e6mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e15 HP (11 kW)\u003c\/td\u003e\n\u003ctd\u003e~27A\u003c\/td\u003e\n\u003ctd\u003e40A\u003c\/td\u003e\n\u003ctd\u003e10mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e20 HP (15 kW)\u003c\/td\u003e\n\u003ctd\u003e~37A\u003c\/td\u003e\n\u003ctd\u003e63A\u003c\/td\u003e\n\u003ctd\u003e16mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e25 HP (18.5 kW)\u003c\/td\u003e\n\u003ctd\u003e~45A\u003c\/td\u003e\n\u003ctd\u003e63A\u003c\/td\u003e\n\u003ctd\u003e16mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAbove 25 HP\u003c\/td\u003e\n\u003ctd\u003eOver 45A\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/ac-mccb-breakers\"\u003eMCCB 100A+\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e25mm² or higher\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eFor heavy-inrush motors\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(star-delta starters, DOL starters on large pumps), consider a D-curve MCB variant, or combine this C-curve MCB with a dedicated motor-protection circuit breaker (MPCB) that senses motor-specific overload conditions. For loads above 63A, move to an\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/ac-mccb-breakers\"\u003eMCCB breaker\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003e3 Pole vs 4 Pole — Which One Do You Need?\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eScenario\u003c\/th\u003e\n\u003cth\u003eUse\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eThree-phase motor (delta connected, no neutral)\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e3 Pole (this product)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThree-phase submersible pump, compressor\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e3 Pole (this product)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThree-phase sub-distribution with separate neutral busbar\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e3 Pole (this product)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThree-phase main incomer (WAPDA 3-phase supply)\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/products\/cnc-4p-ac-mcb-circuit-breaker-ycb7h-63\"\u003e4 Pole MCB\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThree-phase solar inverter AC output (needs neutral switch)\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/products\/cnc-4p-ac-mcb-circuit-breaker-ycb7h-63\"\u003e4 Pole MCB\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStar-connected 3-phase load with neutral\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/products\/cnc-4p-ac-mcb-circuit-breaker-ycb7h-63\"\u003e4 Pole MCB\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eTypical Applications in Pakistan\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAgricultural tube-wells and submersible pumps:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e5-15 HP three-phase motors driven from WAPDA or\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/changeovers\"\u003egenerator-switched\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003esupplies. The 32A or 40A 3P MCB sits at the starter panel and protects the motor cable against overload and short circuit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWorkshop and light industrial machinery:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003elathes, milling machines, welding rectifiers, small compressors (delta-connected). Each machine gets its own 3P MCB feeder in the shop DB.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThree-phase air conditioning:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003elarger commercial ACs (3 ton and above) are often fed from a 3P MCB when they use delta-connected compressors without neutral.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCommercial sub-distribution:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ewhen a three-phase sub-DB is fed by a common neutral busbar and only the three phases need to be switched at the feeder level.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFlour mills, cotton gins, food-processing plants:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003estandard 3P MCB per motor bay, protecting the long cable run back to the main panel.\u003c\/p\u003e\n\u003ch2\u003eWhy C-Curve for 3-Phase Motors\u003c\/h2\u003e\n\u003cp\u003eThree-phase motors draw a starting inrush of 5-7× full-load current for about 1-2 seconds during start-up (DOL start). A C-curve MCB (trips at 5-10× rated current after a short delay) tolerates this inrush without nuisance tripping while still protecting against sustained overload and short circuit.\u003c\/p\u003e\n\u003cp\u003eFor very heavy inrush — star-delta starters on 15 HP+ motors, or transformers — choose a D-curve variant (trips at 10-20× rated). For resistive-only loads (heaters), B-curve is adequate. For motor control in Pakistan,\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eC-curve is the practical default\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch2\u003eRelated Products\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eThree-phase main incomer with neutral →\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/products\/cnc-4p-ac-mcb-circuit-breaker-ycb7h-63\"\u003e4 Pole MCB 20A-63A (Rs.1,900)\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eSingle-phase branch circuits →\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/products\/cnc-1-pole-mcb-ac-breaker-ycb7-63a\"\u003e1 Pole MCB 2A-63A (Rs.425)\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eSingle-phase main incomer →\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/products\/cnc-2p-mcb-ac-circuit-breaker-500v-ycb7h-63\"\u003e2 Pole MCB 10A-63A (Rs.850)\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eAbove 63A or industrial fault levels →\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/ac-mccb-breakers\"\u003eMCCB breakers 100A-1250A\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eThree-phase generator switching →\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/ats\"\u003eATS 3-phase\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eor\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/changeovers\"\u003e3P\/4P changeover switch\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eMotor contactor for start\/stop →\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/magnetic-contactors\"\u003eMagnetic contactors\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eMotor soft-start control →\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/variable-frequency-drive\"\u003eVariable Frequency Drive (VFD)\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eThree-phase voltage monitoring →\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/phase-sequence-relay\"\u003ePhase Sequence Relay\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eComplete DB setup →\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/db-boxes\"\u003eDB boxes\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003e+ breakers\u003c\/li\u003e\n\u003cli\u003eRead our guide →\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/blogs\/guides\/types-of-circuit-breakers\"\u003eTypes of Circuit Breakers in Pakistan\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWhat is a 3 Pole MCB?\u003c\/h3\u003e\n\u003cp\u003eA 3 Pole MCB is a miniature circuit breaker that protects three-phase circuits by disconnecting all three phase conductors (L1, L2, L3) together on overload or short circuit. The three poles are mechanically linked — a fault on any one phase trips all three. This prevents the dangerous single-phasing condition that destroys three-phase motors. The 3 Pole MCB does NOT switch the neutral wire; for circuits that need neutral switching, use a\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/products\/cnc-4p-ac-mcb-circuit-breaker-ycb7h-63\"\u003e4 Pole MCB\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003einstead.\u003c\/p\u003e\n\u003ch3\u003eWhat is the difference between 3 Pole and 4 Pole MCB?\u003c\/h3\u003e\n\u003cp\u003eA 3 Pole MCB switches only the three phase conductors (L1, L2, L3). A 4 Pole MCB switches all three phases plus the neutral. Use 3P where neutral is handled separately by a busbar, or where the load has no neutral (delta-connected motors). Use 4P for three-phase main incomers and for star-connected loads that need full isolation.\u003c\/p\u003e\n\u003ch3\u003eWhat size 3 Pole MCB for a 10 HP three-phase motor?\u003c\/h3\u003e\n\u003cp\u003eA 10 HP three-phase motor at 400V draws approximately 18-19A full-load current. Using the standard 1.25× sizing rule, a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e32A C-curve 3 Pole MCB\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eon 6mm² cable is the correct choice. The C-curve handles the DOL starting inrush of roughly 5-7× full-load current without nuisance tripping. Add a magnetic contactor for on\/off control and thermal overload relay or MPCB for motor-specific overload protection.\u003c\/p\u003e\n\u003ch3\u003eWhat is the 3 Pole 63A MCB price in Pakistan?\u003c\/h3\u003e\n\u003cp\u003eThe CNC YCB7-63N 3 Pole 63A MCB is available at Rs.1,350 at CNC Electric Pakistan. Competitor brands: Schneider iC60N 3P 63A typically costs Rs.5,500-7,000, and Chint NB1 3P 63A costs Rs.2,000-2,500. CNC offers equivalent IEC 60898 certified performance with 6kA breaking capacity at a significantly lower price with a 5-year replacement warranty included.\u003c\/p\u003e\n\u003ch3\u003eCan I use a 3 Pole MCB as main incomer on 3-phase WAPDA supply?\u003c\/h3\u003e\n\u003cp\u003eOnly if the installation uses a common neutral busbar and the neutral is not routed through the main breaker. For a full-isolation 3-phase main incomer where both the three phases AND the neutral should disconnect together, use a\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/products\/cnc-4p-ac-mcb-circuit-breaker-ycb7h-63\"\u003e4 Pole MCB\u003c\/a\u003e. In most modern installations a 4 Pole is the safer choice at the main incomer because it allows complete de-energisation of the DB during maintenance.\u003c\/p\u003e\n\u003ch3\u003eDoes a 3 Pole MCB provide motor overload protection?\u003c\/h3\u003e\n\u003cp\u003ePartially. The 3 Pole MCB protects the motor cable and panel against short circuit, and it trips on sustained overload. However it does NOT detect motor-specific issues like stalled rotor, unbalanced phases, or thermal overload on only one phase. For complete motor protection, combine this 3P MCB with either (a) a thermal overload relay set to the motor FLC, or (b) a dedicated motor-protection circuit breaker (MPCB), or (c) a\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/variable-frequency-drive\"\u003eVFD\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003ethat includes built-in motor protection.\u003c\/p\u003e\n\u003ch3\u003eWhat breaking capacity does the CNC 3 Pole MCB have?\u003c\/h3\u003e\n\u003cp\u003e6kA at 400V AC, per IEC 60898-1. This is adequate for residential, commercial, and small industrial panels where the prospective short-circuit current is under 6 kiloamperes (kA). For installations close to a large transformer where fault levels can exceed 6 kA, move up to an\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/ac-mccb-breakers\"\u003eMCCB\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003ewith 15-50 kA breaking capacity.\u003c\/p\u003e\n\u003ch3\u003eHow wide is the 3 Pole MCB on the DIN rail?\u003c\/h3\u003e\n\u003cp\u003eThe CNC YCB7-63N 3 Pole MCB is 54mm wide — three DIN-rail modules. Plan your DB box capacity accordingly. A 12-way DB box with three 3P MCBs already uses 9 of the 12 modules, leaving 3 modules for branch or auxiliary circuits.\u003c\/p\u003e","brand":"Solarleaf.pk","offers":[{"title":"16A","offer_id":53465434554733,"sku":null,"price":1350.0,"currency_code":"PKR","in_stock":true},{"title":"20A","offer_id":53465434587501,"sku":null,"price":1350.0,"currency_code":"PKR","in_stock":true},{"title":"32A","offer_id":53465434620269,"sku":null,"price":1350.0,"currency_code":"PKR","in_stock":true},{"title":"40A","offer_id":53465434653037,"sku":null,"price":1350.0,"currency_code":"PKR","in_stock":true},{"title":"63A","offer_id":53465434685805,"sku":null,"price":1350.0,"currency_code":"PKR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/8280\/1261\/files\/Screenshot2026-06-18223941.png?v=1781804415"},{"product_id":"ac-4-pole-mcb-20a-32a-40a-63a","title":"AC 4 Pole MCB 20A, 32A, 40A, 63A","description":"\u003ch2\u003eCNC 4 Pole MCB — Three-Phase Plus Neutral Miniature Circuit Breaker\u003c\/h2\u003e\n\u003cp\u003eThe CNC YCB7-63N 4 pole MCB is a three-phase plus neutral (3P+N) miniature circuit breaker. It disconnects all four conductors — L1, L2, L3, and N — together in a single trip mechanism, giving complete isolation of a three-phase circuit. This is the standard choice for three-phase main incoming breakers in commercial, industrial, and large residential installations across Pakistan.\u003c\/p\u003e\n\u003cp\u003eUnlike the\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/products\/cnc-3p-mcb-ac-circuits-breaker-ycb7h-63\"\u003e3 Pole MCB\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003ewhich only switches the three phases, the 4 Pole version also switches the neutral — essential for true isolation during maintenance, for three-phase solar inverter AC output, and for star-connected loads where the neutral carries unbalanced current. A fault on any phase trips all four poles simultaneously, preventing the dangerous single-phasing condition that destroys three-phase motors and compressors.\u003c\/p\u003e\n\u003cp\u003eRated at 400V AC with C-curve trip response and 6kA breaking capacity per IEC 60898-1, the YCB7-63N 4P handles three-phase DB feeders, motor circuits with neutral, 3-phase pump starters, and solar inverter AC output protection. CNC Electric is a trusted MCB brand in Pakistan with a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e5-year replacement warranty\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eon all circuit breakers.\u003c\/p\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003e4 Pole MCB — Three-phase + Neutral Miniature Circuit Breaker\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eYCB7-63N (4P)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePoles\u003c\/td\u003e\n\u003ctd\u003e4P (L1 + L2 + L3 + N — all four switched together)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Ratings\u003c\/td\u003e\n\u003ctd\u003e20A, 32A, 40A, 63A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Voltage\u003c\/td\u003e\n\u003ctd\u003e400V AC, 50Hz (3-phase)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBreaking Capacity\u003c\/td\u003e\n\u003ctd\u003e6kA at 400V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTrip Curve\u003c\/td\u003e\n\u003ctd\u003eC-curve (trips at 5-10× rated current)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003ctd\u003eIEC 60898-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003e35mm DIN rail\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Width\u003c\/td\u003e\n\u003ctd\u003e4 modules (72mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal Capacity\u003c\/td\u003e\n\u003ctd\u003eUp to 25mm² cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMechanical Life\u003c\/td\u003e\n\u003ctd\u003e20,000 operations\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElectrical Life\u003c\/td\u003e\n\u003ctd\u003e10,000 operations\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e5-year replacement warranty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eWhy 4 Pole (3P+N) Over 3 Pole?\u003c\/h2\u003e\n\u003cp\u003eThe key difference between a 3 Pole and a 4 Pole MCB is whether the neutral is switched together with the phases. For Pakistani installations, the 4 Pole version is preferred in these situations:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThree-phase main incoming breaker.\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eWhen WAPDA supply arrives on four conductors (3 phases + neutral), the main breaker should disconnect all four during maintenance or fault. A 3 Pole leaves the neutral connected; a 4 Pole fully de-energises the DB. Safety personnel can service the downstream panel only after full isolation — that requires a 4 Pole.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThree-phase solar inverter AC output.\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eHybrid and on-grid 3-phase solar inverters generate their own live-and-neutral AC output. When the inverter is off, the neutral from the inverter side must be isolated from the neutral from WAPDA to prevent parallel-path issues. A 4 Pole MCB on the inverter output ensures the inverter neutral is switched together with the three phases.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStar-connected three-phase loads.\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eLoads wired in star configuration (heating elements, some motors, unbalanced lighting systems) use the neutral as a return path. The neutral can carry significant current under unbalanced conditions, so it must be switched with the phases during fault or maintenance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGenerator and ATS panels.\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eWhen WAPDA and generator supplies are alternated via an\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/ats\"\u003eAutomatic Transfer Switch\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eor manual\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/changeovers\"\u003echangeover\u003c\/a\u003e, the neutral from each source is typically separate. The 4 Pole MCB on each source ensures the neutral of one source never conflicts with the neutral of the other.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eUse a 3 Pole instead\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eif the load has no neutral (delta-connected motors, pumps, compressors), or if the neutral is handled separately via a common busbar.\u003c\/p\u003e\n\u003ch2\u003e4P MCB — Amperage Selection Guide\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eRating\u003c\/th\u003e\n\u003cth\u003eCable Size\u003c\/th\u003e\n\u003cth\u003eTypical Application in Pakistan\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e20A\u003c\/td\u003e\n\u003ctd\u003e2.5mm²\u003c\/td\u003e\n\u003ctd\u003eSmall 3-phase sub-DB, 5 HP motor feeder\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e32A\u003c\/td\u003e\n\u003ctd\u003e6mm²\u003c\/td\u003e\n\u003ctd\u003e10 HP motor, 10 kW 3-phase solar inverter output, commercial sub-main\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e40A\u003c\/td\u003e\n\u003ctd\u003e10mm²\u003c\/td\u003e\n\u003ctd\u003e15 HP motor, 15 kW solar inverter output, medium commercial main\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e63A\u003c\/td\u003e\n\u003ctd\u003e16mm²\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eThree-phase main incomer\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efor shop\/office, 20-25 HP motor, 20 kW solar inverter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eAbove 63A:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003emove to a\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/ac-mccb-breakers\"\u003e4-Pole MCCB\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003erated 100A–1600A for larger commercial and industrial installations.\u003c\/p\u003e\n\u003ch2\u003eThree-Phase Motor Sizing with 4 Pole MCB\u003c\/h2\u003e\n\u003cp\u003eFor motor feeders, select the 4 Pole MCB at approximately 1.25× the motor full-load current on 400V 3-phase:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eMotor Size\u003c\/th\u003e\n\u003cth\u003eApprox FLC\u003c\/th\u003e\n\u003cth\u003e4P MCB\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e5 HP (3.7 kW)\u003c\/td\u003e\n\u003ctd\u003e~9A\u003c\/td\u003e\n\u003ctd\u003e20A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e10 HP (7.5 kW)\u003c\/td\u003e\n\u003ctd\u003e~18A\u003c\/td\u003e\n\u003ctd\u003e32A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e15 HP (11 kW)\u003c\/td\u003e\n\u003ctd\u003e~27A\u003c\/td\u003e\n\u003ctd\u003e40A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e20 HP (15 kW)\u003c\/td\u003e\n\u003ctd\u003e~37A\u003c\/td\u003e\n\u003ctd\u003e63A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAbove 20 HP\u003c\/td\u003e\n\u003ctd\u003eOver 37A\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/ac-mccb-breakers\"\u003e4P MCCB 100A+\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eFor motors with heavy starting inrush (star-delta starter, DOL on 15 HP+), consider a D-curve MCB variant or pair this C-curve with a dedicated motor-protection relay. For 3-phase solar inverter AC output, size the MCB at approximately 1.25× the inverter rated AC output current.\u003c\/p\u003e\n\u003ch2\u003eTypical Applications\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003e3-phase main incoming breaker.\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eCommercial shops, offices, small factories, large homes with 3-phase WAPDA supply. The 63A 4P sits at the top of the DB — all power flows through it first. Install a\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/phase-sequence-relay\"\u003ephase sequence relay\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eimmediately after for phase-reversal protection.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e3-phase solar inverter AC output.\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eOn-grid and hybrid 3-phase solar inverters up to 22 kW. The 4P on the inverter output ensures the inverter (its live and neutral) can be completely isolated from the house DB during maintenance. For 25 kW+, use a 4P MCCB.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e3-phase motor feeder with neutral.\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eStar-connected 3-phase motors and loads (unbalanced lighting, heating elements, some HVAC systems) where the neutral carries actual current.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGenerator 4-wire changeover panel.\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eWhen the generator and WAPDA each provide their own neutral, the 4P MCB on each source ensures proper isolation during\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/ats\"\u003eATS\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eor manual switching.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAgricultural tube-well panels.\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSubmersible pumps with 3-phase star-connected motors, especially when the panel is remote and requires full isolation for safe servicing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCommercial kitchen panels.\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e3-phase sub-DBs feeding ovens, heaters, chillers — often unbalanced loads with significant neutral current.\u003c\/p\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWire the neutral through the 4th pole.\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eConnect L1 to pole 1, L2 to pole 2, L3 to pole 3, and neutral to pole 4. All four poles trip together on a fault anywhere in the circuit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eUse 6mm² copper for 32A and below; 10mm² for 40A; 16mm² for 63A.\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSize the neutral conductor the same as the phase conductors (not reduced) for unbalanced loads.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTorque terminal screws to 2.5 Nm.\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eRe-check tightness after 3 months of service. At 63A continuous, a loose terminal overheats and is a major cause of panel failures in Pakistan.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePlan DB space:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ethis 4 Pole MCB is 72mm wide (4 modules). An 18-way DB with one 4P main incomer uses 4 modules, leaving 14 for branch circuits.\u003c\/p\u003e\n\u003ch2\u003eRelated Products\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eThree-phase without neutral →\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/products\/cnc-3p-mcb-ac-circuits-breaker-ycb7h-63\"\u003e3 Pole MCB 16A-63A (Rs.1,350)\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eSingle-phase branch circuits →\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/products\/cnc-1-pole-mcb-ac-breaker-ycb7-63a\"\u003e1 Pole MCB 2A-63A (Rs.425)\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eSingle-phase main incomer →\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/products\/cnc-2p-mcb-ac-circuit-breaker-500v-ycb7h-63\"\u003e2 Pole MCB 10A-63A (Rs.850)\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eAbove 63A or industrial fault levels →\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/ac-mccb-breakers\"\u003eMCCB 4P 100A-1600A\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e3-phase generator auto-switching →\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/ats\"\u003eATS 4-pole\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e3-phase manual changeover →\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/changeovers\"\u003eChangeover switches 4P\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003ePhase-sequence \/ reversal protection →\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/phase-sequence-relay\"\u003ePhase Sequence Relay\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e3-phase voltage protection →\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/pages\/voltage-protector-finder\"\u003eVA Voltage Protector\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eMotor contactor for start\/stop →\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/magnetic-contactors\"\u003eMagnetic contactors\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e3-phase SPD \/ surge protection →\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/spd\"\u003eSPD 4-pole\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eComplete 3-phase DB →\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/db-boxes\"\u003eDB boxes\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003e+ breakers\u003c\/li\u003e\n\u003cli\u003eRead our guide →\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/blogs\/guides\/types-of-circuit-breakers\"\u003eTypes of Circuit Breakers in Pakistan\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWhat is a 4 Pole MCB?\u003c\/h3\u003e\n\u003cp\u003eA 4 Pole MCB is a miniature circuit breaker that protects a three-phase plus neutral (3P+N) circuit by disconnecting all four conductors — L1, L2, L3, and neutral — together on overload or short circuit. The four poles are mechanically linked so a fault on any phase or on the neutral trips all four. This gives complete isolation of the three-phase circuit, essential for main incomers and star-connected loads.\u003c\/p\u003e\n\u003ch3\u003eWhat is the difference between 3 Pole and 4 Pole MCB?\u003c\/h3\u003e\n\u003cp\u003eA 3 Pole MCB switches only the three phase conductors. A 4 Pole MCB switches all three phases plus the neutral. Use 3P for circuits without neutral (delta-connected motors) or where the neutral is handled by a separate busbar. Use 4P for three-phase main incomers, solar inverter 3-phase outputs, star-connected loads, and generator changeover panels that need complete isolation.\u003c\/p\u003e\n\u003ch3\u003eWhat size 4 Pole MCB for a three-phase main incomer?\u003c\/h3\u003e\n\u003cp\u003eFor a typical 3-phase commercial or residential main incomer in Pakistan, use a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e63A 4 Pole MCB\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ewith 16mm² copper cable. This handles roughly 20-25 HP total load. For larger loads, move to a\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/ac-mccb-breakers\"\u003e4 Pole MCCB\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003erated 100A or higher. Pair the main 4P with a phase sequence relay for phase-reversal protection.\u003c\/p\u003e\n\u003ch3\u003eWhat is the 4 Pole 63A MCB price in Pakistan?\u003c\/h3\u003e\n\u003cp\u003eThe CNC YCB7-63N 4 Pole 63A MCB is available at Rs.1,900 at CNC Electric Pakistan. Competitor brands: Schneider iC60N 4P 63A typically costs Rs.7,500-10,000, and Chint NB1 4P 63A costs Rs.2,800-3,500. CNC offers equivalent IEC 60898-1 certified performance at a significantly lower price with a 5-year replacement warranty.\u003c\/p\u003e\n\u003ch3\u003eCan I use a 4 Pole MCB for my 3-phase solar inverter?\u003c\/h3\u003e\n\u003cp\u003eYes — for the AC output side of a 3-phase solar inverter, a 4 Pole MCB is the correct choice. It ensures the inverter's live and neutral are fully isolated from the house DB during maintenance. Size it at approximately 1.25× the inverter's rated AC output current. For the DC side (panels to inverter), never use an AC MCB — use\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/dc-breaker\"\u003eDC circuit breakers\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003erated for your system voltage (500V, 1000V, or 1500V).\u003c\/p\u003e\n\u003ch3\u003eDoes the 4 Pole MCB provide motor overload protection?\u003c\/h3\u003e\n\u003cp\u003ePartially. The 4 Pole MCB protects the cable and panel against short circuit and trips on sustained overload. It does NOT detect motor-specific issues like stalled rotor, unbalanced phases, or phase reversal. For complete three-phase motor protection, combine this 4P MCB with (a) a thermal overload relay set to the motor FLC, (b) a phase sequence relay, and\/or (c) a motor-protection circuit breaker (MPCB) or VFD with built-in motor protection.\u003c\/p\u003e\n\u003ch3\u003eWhat breaking capacity does the CNC 4 Pole MCB have?\u003c\/h3\u003e\n\u003cp\u003e6kA at 400V AC per IEC 60898-1. This is adequate for residential, commercial, and small industrial 3-phase panels where the prospective short-circuit current is under 6 kA. For installations close to a large transformer where fault levels exceed 6 kA, move up to a 4P\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/ac-mccb-breakers\"\u003eMCCB\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003ewith 15-50 kA breaking capacity.\u003c\/p\u003e\n\u003ch3\u003eHow wide is the 4 Pole MCB on the DIN rail?\u003c\/h3\u003e\n\u003cp\u003eThe CNC YCB7-63N 4 Pole MCB is 72mm wide — four DIN-rail modules. Plan your DB box capacity accordingly: an 18-way DB with one 4P main incomer uses 4 modules, leaving 14 modules for branch circuits (single pole or 1P+N MCBs).\u003c\/p\u003e","brand":"Solarleaf.pk","offers":[{"title":"Default Title","offer_id":53465450053997,"sku":null,"price":0.0,"currency_code":"PKR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/8280\/1261\/files\/Screenshot2026-06-18224201.png?v=1781804624"},{"product_id":"dc-4-pole-mcb-1000v-solar-pv-breaker","title":"DC 4 Pole MCB 1000V | Solar PV Breaker","description":"\u003cp\u003eDC MCB 4 pole 1000V price in Pakistan matters when a solar installer needs a breaker that actually matches DC string voltage instead of a normal AC breaker forced into a PV job. This CNC Electric listing is sold locally from Rs.3,300 with selectable 16A, 20A, 32A and 63A options on a 4-pole DC breaker page. For rooftop solar, combiner boxes, battery-linked DC distribution and selected industrial DC circuits, it gives one practical benefit: you get DC-side overload, short-circuit and isolation protection in a format made for photovoltaic work instead of improvised panel wiring.\u003c\/p\u003e\n\u003cp\u003eThis is not the right breaker for every job. If the system current is much higher, you move up to a\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/dc-mccb-breaker\"\u003eDC MCCB breaker\u003c\/a\u003e. If the risk is lightning or switching surge damage, you still need a proper\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/dc-spd\"\u003eDC SPD\u003c\/a\u003e. If the installer is trying to use a normal AC breaker on a solar string, that is the wrong comparison from the start. This page is for the buyer who needs a real\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/dc-breaker\"\u003eDC breaker\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003efor a 1000V-class solar or DC distribution setup and wants a 4-pole format with practical ampere choices.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e4-pole DC MCB format for DC circuits up to 1000V on the local sales page.\u003c\/li\u003e\n\u003cli\u003eSelectable local current options: 16A, 20A, 32A and 63A.\u003c\/li\u003e\n\u003cli\u003eLocal page states overload, short-circuit and isolation protection for photovoltaic, industrial, civil and communication systems.\u003c\/li\u003e\n\u003cli\u003e6kA breaking-capacity class is published on the local product page.\u003c\/li\u003e\n\u003cli\u003eStandard DIN-rail mounting helps in\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/solar-bundles\"\u003esolar protection panels\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eand DC combiner layouts.\u003c\/li\u003e\n\u003cli\u003eOfficial family reference supports auxiliary contact, alarm contact and shunt-release compatibility in the wider breaker family.\u003c\/li\u003e\n\u003cli\u003eA better fit for solar strings and DC feeders than forcing a normal\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/ac-breaker\"\u003eAC breaker\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003einto a DC job.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLocal sale product\u003c\/td\u003e\n\u003ctd\u003eDC 4 Pole MCB 1000V, 16A \/ 20A \/ 32A \/ 63A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLocal displayed price\u003c\/td\u003e\n\u003ctd\u003eRs.3,300 on the currently displayed local selector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of poles\u003c\/td\u003e\n\u003ctd\u003e4 Pole\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated working voltage\u003c\/td\u003e\n\u003ctd\u003e1000V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated insulation voltage\u003c\/td\u003e\n\u003ctd\u003e1200V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated impulse voltage\u003c\/td\u003e\n\u003ctd\u003e4kV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate breaking capacity\u003c\/td\u003e\n\u003ctd\u003e6kA class on the local page\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating breaking capacity\u003c\/td\u003e\n\u003ctd\u003eIcs = 100% of Icu on local page\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTripping type \/ curve\u003c\/td\u003e\n\u003ctd\u003eThermomagnetic, B \/ C \/ K family options shown on local page\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMechanical life\u003c\/td\u003e\n\u003ctd\u003e20,000 operations\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElectrical life\u003c\/td\u003e\n\u003ctd\u003ePV: 1500 \/ PVn: 300 on local page\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWorking temperature\u003c\/td\u003e\n\u003ctd\u003e-35°C to +70°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage temperature\u003c\/td\u003e\n\u003ctd\u003e-40°C to +85°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection degree\u003c\/td\u003e\n\u003ctd\u003eIP20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstallation method\u003c\/td\u003e\n\u003ctd\u003eDIN35 standard rail\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWiring capacity\u003c\/td\u003e\n\u003ctd\u003e2.5-25mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal torque\u003c\/td\u003e\n\u003ctd\u003e3.5 N·m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003ctd\u003eIEC\/EN 60947-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eThis description uses only data published on the live product page. Exact selector-by-selector prices for all ampere options, full dimensional drawing, accessory part numbers and local wiring diagram details are not currently listed in a clean local sales format and have not been guessed.\u003c\/p\u003e\n\u003ch2\u003eProduct Range and Price Guide\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eAmp option\u003c\/th\u003e\n\u003cth\u003ePoles\u003c\/th\u003e\n\u003cth\u003eVoltage\u003c\/th\u003e\n\u003cth\u003eBest fit\u003c\/th\u003e\n\u003cth\u003ePrice note\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e16A\u003c\/td\u003e\n\u003ctd\u003e4 Pole\u003c\/td\u003e\n\u003ctd\u003e1000V DC\u003c\/td\u003e\n\u003ctd\u003eLighter PV string current and smaller DC feeders\u003c\/td\u003e\n\u003ctd\u003eConfirm on live selector; page currently displays Rs.3,300\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e20A\u003c\/td\u003e\n\u003ctd\u003e4 Pole\u003c\/td\u003e\n\u003ctd\u003e1000V DC\u003c\/td\u003e\n\u003ctd\u003eCommon solar string and combiner current band\u003c\/td\u003e\n\u003ctd\u003eConfirm on live selector; page currently displays Rs.3,300\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e32A\u003c\/td\u003e\n\u003ctd\u003e4 Pole\u003c\/td\u003e\n\u003ctd\u003e1000V DC\u003c\/td\u003e\n\u003ctd\u003eHeavier DC feeder duty and selected combiner circuits\u003c\/td\u003e\n\u003ctd\u003eConfirm on live selector; page currently displays Rs.3,300\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e63A\u003c\/td\u003e\n\u003ctd\u003e4 Pole\u003c\/td\u003e\n\u003ctd\u003e1000V DC\u003c\/td\u003e\n\u003ctd\u003eUpper end of the listed family for larger DC branch circuits\u003c\/td\u003e\n\u003ctd\u003eConfirm on live selector; page currently displays Rs.3,300\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eApplications — Where to Use This DC MCB\u003c\/h2\u003e\n\u003cp\u003eThis breaker belongs on the DC side of the system. In Lahore rooftop solar work, installers commonly need a proper breaker between the string and the combiner or between the DC source and a protected enclosure. In Karachi, where heat, salt air and switchgear misuse already create enough problems, using the right\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/dc-breaker\"\u003eDC breaker\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eis far better than forcing an AC breaker into a PV job. In Faisalabad factory-roof solar and process-power applications, a 4-pole 1000V DC breaker can fit combiner-style layouts, string grouping, battery-linked feeders and selected DC distribution points where dependable isolation matters.\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003cth\u003eRecommended use\u003c\/th\u003e\n\u003cth\u003eWhy this breaker fits\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSolar string isolation\u003c\/td\u003e\n\u003ctd\u003eUse on a properly designed PV DC side\u003c\/td\u003e\n\u003ctd\u003e1000V DC class and 4-pole format suit PV distribution logic better than AC protection gear\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCombiner box protection\u003c\/td\u003e\n\u003ctd\u003eUse alongside\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/dc-spd\"\u003eDC SPD\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eand fuse\/isolator strategy where needed\u003c\/td\u003e\n\u003ctd\u003eProvides DC-side overload and short-circuit protection in a DIN-rail format\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery-linked DC feeder\u003c\/td\u003e\n\u003ctd\u003eUse only where voltage and current match the design envelope\u003c\/td\u003e\n\u003ctd\u003eBetter matched to DC duty than a normal AC MCB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelecom or communication DC panel\u003c\/td\u003e\n\u003ctd\u003eUse where the DC distribution design calls for miniature breaker protection\u003c\/td\u003e\n\u003ctd\u003eThe local page itself lists communication systems as a target use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIndustrial DC auxiliary circuits\u003c\/td\u003e\n\u003ctd\u003eUse in properly engineered DC distribution sections\u003c\/td\u003e\n\u003ctd\u003eThe local product page lists industrial and civil DC systems among the intended applications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eHow to Choose the Right Amp Rating\u003c\/h2\u003e\n\u003cp\u003eDo not choose the breaker only by the biggest amp number. Match it to the conductor, the expected DC current, the combiner design and the fault-clearing logic of the system. A bigger ampere rating is not automatically safer. It can reduce protection if the wiring and source current do not justify it. If the design has high fault energy or current levels above miniature-breaker territory, move up to a proper\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/dc-mccb-breaker\"\u003eDC MCCB\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003einstead of stretching a small breaker beyond its role.\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSystem condition\u003c\/th\u003e\n\u003cth\u003eLikely choice\u003c\/th\u003e\n\u003cth\u003eWhy\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSmall PV string current and lighter conductor size\u003c\/td\u003e\n\u003ctd\u003e16A or 20A\u003c\/td\u003e\n\u003ctd\u003eCloser to common string-level protection ranges\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeavier combiner or DC branch current\u003c\/td\u003e\n\u003ctd\u003e32A\u003c\/td\u003e\n\u003ctd\u003eCommon step when current rises above lighter string-protection bands\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUpper-end miniature DC feeder need\u003c\/td\u003e\n\u003ctd\u003e63A\u003c\/td\u003e\n\u003ctd\u003eHighest listed current on the local page\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHigh-current DC distribution beyond miniature-breaker comfort\u003c\/td\u003e\n\u003ctd\u003eUse DC MCCB instead\u003c\/td\u003e\n\u003ctd\u003eMiniature DC breakers are not the answer for every larger DC panel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eDC MCB vs Alternatives — Why CNC?\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003ePoint\u003c\/th\u003e\n\u003cth\u003eCNC DC MCB 4 Pole 1000V\u003c\/th\u003e\n\u003cth\u003eGeneric AC breaker used on DC\u003c\/th\u003e\n\u003cth\u003eDC MCCB\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMain purpose\u003c\/td\u003e\n\u003ctd\u003eMiniature DC-side protection and isolation for PV and DC systems\u003c\/td\u003e\n\u003ctd\u003eUsually the wrong device class for true DC duty\u003c\/td\u003e\n\u003ctd\u003eLarger DC distribution and higher-current jobs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage match\u003c\/td\u003e\n\u003ctd\u003e1000V DC on local page\u003c\/td\u003e\n\u003ctd\u003eOften unsuitable or unsafe as a DC substitute\u003c\/td\u003e\n\u003ctd\u003eBetter for heavier DC voltage\/current design envelopes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePanel footprint\u003c\/td\u003e\n\u003ctd\u003eCompact DIN-rail format\u003c\/td\u003e\n\u003ctd\u003eMay look compact but the duty mismatch is the real issue\u003c\/td\u003e\n\u003ctd\u003eLarger physical footprint\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWhen to choose it\u003c\/td\u003e\n\u003ctd\u003eWhen you need a real 1000V-class DC breaker in miniature format\u003c\/td\u003e\n\u003ctd\u003eDo not choose this route for proper PV design\u003c\/td\u003e\n\u003ctd\u003eWhen miniature-breaker size or current range is no longer enough\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eWhat This Product Does NOT Protect Against\u003c\/h2\u003e\n\u003cp\u003eThis product does not replace a\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/dc-spd\"\u003eDC SPD\u003c\/a\u003e, a correctly sized\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/fuses\"\u003esolar fuse\u003c\/a\u003e, or a proper\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/dc-isolator\"\u003eDC isolator\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003ewhere the system design requires them. It does not fix poor combiner-box layout, wrong cable sizing, loose lugs, water ingress, or a bad inverter-side design. It is also not the right answer for every high-current DC panel. Some jobs belong to a DC MCCB, not to a miniature breaker.\u003c\/p\u003e\n\u003cp\u003eFor a full solar or DC protection setup, pair the breaker with the right\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/dc-spd\"\u003eDC SPD\u003c\/a\u003e, a suitable\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/solar-bundles\"\u003esolar protection bundle\u003c\/a\u003e, the correct\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/db-boxes\"\u003eDB box\u003c\/a\u003e, and if the system includes voltage-sensitive AC loads, add a proper\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/voltage-protectors\"\u003evoltage protector\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eon the AC side as well.\u003c\/p\u003e\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eMount the breaker on a proper DIN rail inside a suitably rated DC enclosure or combiner box.\u003c\/li\u003e\n\u003cli\u003eConfirm the DC voltage class, current class, cable size and protection coordination before landing any wires.\u003c\/li\u003e\n\u003cli\u003eUse correct conductor size within the published wiring range and tighten terminals correctly to avoid hot joints.\u003c\/li\u003e\n\u003cli\u003eCoordinate the breaker with upstream and downstream DC protection such as fuses, isolators and\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/dc-spd\"\u003eDC surge protection\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eBefore energizing, verify polarity logic, enclosure sealing, and the full DC path from array to combiner or distribution section.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cdiv\u003e\n\u003cp\u003eAdd Fire Protection to Your Panel\u003c\/p\u003e\n\u003cp\u003eProtect your panel with a\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/products\/cnc-aerosol-fire-extinguisher-din-rail-for-switchgear-distribution-box\"\u003eDIN Rail Aerosol Fire Extinguisher\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003e— only Rs.2,500. Auto activation. 10-year shelf life.\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/blogs\/guides\/fire-extinguisher-electrical-panels-guide-pakistan\"\u003eFire safety guide →\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2\u003eRelated Products\u003c\/h2\u003e\n\u003cdiv\u003e\n\u003cp\u003eComplete Your Electrical Setup\u003c\/p\u003e\n\u003cp\u003e⚡\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/dc-spd\"\u003eDC SPD\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e🔌\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/dc-isolator\"\u003eDC Isolators\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e📦\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/solar-bundles\"\u003eSolar DB Bundles\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e🧰\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/fuses\"\u003eSolar Fuses\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e📖\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/blogs\/news\/dc-breaker-complete-guide-to-dc-circuit-breakers-for-solar-battery-low-voltage-systems\"\u003eGuide: DC Breaker Complete Guide\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e⚡\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/dc-fuse\"\u003eDC Fuses\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/dc-breaker\"\u003eDC breakers\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003efor other solar and battery-side protection options.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/dc-mccb-breaker\"\u003eDC MCCB breakers\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003ewhen current level or panel duty is beyond miniature-breaker range.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/dc-spd\"\u003eDC SPDs\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003efor lightning and switching surge protection on PV strings and DC feeders.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/dc-isolator\"\u003eDC isolators\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003ewhen manual isolation is required by the design.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/solar-bundles\"\u003eSolar bundles\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003efor a more complete pre-matched protection package.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/db-boxes\"\u003eDB boxes\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eto house the DC protection assembly correctly.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/spd\"\u003eSPD\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eon the AC side when inverter-fed loads also need surge protection.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/fire-extinguisher\"\u003eFire extinguisher products\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eas the final panel-safety add-on.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.cncelectric.pk\/blogs\/guides\/solar-db-box-guide-everything-pakistan-installers-need-to-know\"\u003eSolar DB Box Guide\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003efor installer-side planning.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.cncelectric.pk\/blogs\/guides\/types-of-circuit-breakers\"\u003eTypes of Circuit Breakers Guide\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003efor broader breaker selection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003e1. What is a DC 4 pole MCB used for in Pakistan?\u003c\/h3\u003e\n\u003cp\u003eIt is used for DC-side overload, short-circuit and isolation protection in solar photovoltaic systems, battery-linked DC circuits and selected communication or industrial DC panels.\u003c\/p\u003e\n\u003ch3\u003e2. What is the price of this DC 4 pole 1000V breaker in Pakistan?\u003c\/h3\u003e\n\u003cp\u003eThe current local product page displays Rs.3,300. Because the page has selectable 16A, 20A, 32A and 63A options, confirm the live selector before checkout if you need exact variant pricing.\u003c\/p\u003e\n\u003ch3\u003e3. Is this a DC MCB or a DC MCCB?\u003c\/h3\u003e\n\u003cp\u003eThis product is a DC MCB. It is for miniature-breaker duty. If the system current and fault-duty are higher, move to a\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/dc-mccb-breaker\"\u003eDC MCCB\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003e4. Can I use a normal AC breaker instead of this DC breaker?\u003c\/h3\u003e\n\u003cp\u003eThat is not the right approach for a real PV DC system. DC duty and arc behavior are different. Use a proper DC breaker designed for the voltage and current involved.\u003c\/p\u003e\n\u003ch3\u003e5. What ampere options are available on the local page?\u003c\/h3\u003e\n\u003cp\u003eThe local page currently shows 16A, 20A, 32A and 63A selector options on the 4-pole 1000V DC breaker listing.\u003c\/p\u003e\n\u003ch3\u003e6. Does this breaker protect against solar surges or lightning?\u003c\/h3\u003e\n\u003cp\u003eNo. Breakers and SPDs do different jobs. Use a\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/dc-spd\"\u003eDC SPD\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003efor surge protection.\u003c\/p\u003e\n\u003ch3\u003e7. Is this suitable for combiner boxes?\u003c\/h3\u003e\n\u003cp\u003eYes, it can suit combiner-box and DC distribution work where the voltage and current match the design and the rest of the protection scheme is correct.\u003c\/p\u003e\n\u003ch3\u003e8. Where can I buy this DC MCB in Pakistan?\u003c\/h3\u003e\n\u003cp\u003eYou can buy it from CNC Electric Pakistan through the live product page and get help on the correct breaker, fuse, isolator and SPD combination before ordering.\u003c\/p\u003e\n\u003cp\u003eThis 4-pole 1000V DC MCB is the right buy when you need a real photovoltaic DC breaker in miniature format instead of a forced AC workaround. It suits solar strings, combiner-box protection, battery-linked DC feeders and selected communication or industrial DC circuits when the design stays inside its published class. For stock status, selector confirmation and help choosing the correct\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/dc-spd\"\u003eDC SPD\u003c\/a\u003e,\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/dc-isolator\"\u003eisolator\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eor\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.cncelectric.pk\/collections\/dc-mccb-breaker\"\u003eDC MCCB\u003c\/a\u003e, contact CNC Electric Pakistan on WhatsApp\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/wa.me\/923261111376\"\u003e0326-1111376\u003c\/a\u003e. Orders above Rs.10,000 qualify for free delivery.\u003c\/p\u003e","brand":"Solarleaf.pk","offers":[{"title":"20A","offer_id":53465470435693,"sku":null,"price":3400.0,"currency_code":"PKR","in_stock":true},{"title":"32A","offer_id":53465470468461,"sku":null,"price":3400.0,"currency_code":"PKR","in_stock":true},{"title":"40A","offer_id":53465470501229,"sku":null,"price":3400.0,"currency_code":"PKR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/8280\/1261\/files\/Screenshot2026-06-18230353.png?v=1781805994"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/8280\/1261\/collections\/CNC-Electric-Pakistan-Logo-PNG-IN-WHITE-300X142.png?v=1782139829","url":"https:\/\/solarleaf.pk\/collections\/cnc-breakers.oembed","provider":"Solarleaf.pk","version":"1.0","type":"link"}