1. What is the cheapest circuit breaker price in Pakistan?

The most affordable IEC-certified breaker is the CNC 1-Pole MCB at Rs.425. Unbranded breakers may cost Rs.150–250 but lack proper certification and can be dangerous. We recommend spending the extra Rs.200 for a genuine, tested product.

2. Why are Schneider breakers so expensive in Pakistan?

Schneider products are manufactured in France and Indonesia, then imported through multiple distributors. Each layer adds margin. A Schneider 1P MCB costs Rs.1,200–1,800 vs Rs.425 for an equivalent CNC MCB—both are IEC 60898 certified with identical performance specs.

3. What size MCB do I need for my home in Pakistan?

Most Pakistani homes need: 32A main breaker (single-phase) or 63A (three-phase), 16A for AC circuits, 10A for lighting, and 20A for kitchen/power sockets. See our complete buying guide for detailed sizing.

4. Can I use a regular MCB for solar panels?

No. Solar panels produce DC current. You must use a DC-rated breaker (Rs.1,550 for 500V 2P or Rs.3,300 for 1000V 4P). Using an AC MCB on DC can cause arcing and fire. Shop DC breakers.

5. What is the difference between MCB and MCCB price-wise?

MCBs range from Rs.425 to Rs.1,850 depending on poles. MCCBs start at Rs.4,500 and go up to Rs.20,000. The price difference reflects the MCCB’s higher current rating (up to 250A), adjustable trip settings, and higher breaking capacity (25–50kA vs 6kA).

6. Do you offer bulk pricing for contractors?

Yes. Orders of 50+ pieces qualify for dealer pricing. WhatsApp us your requirement list and we will send a custom quote within 1 hour. Delivery remains free nationwide.

AC MCCB Breakers

What is an AC MCCB?

An AC MCCB (Moulded Case Circuit Breaker, AC-rated) is the standard industrial circuit breaker for Pakistani sub-DB feeders and motor branches above 100 A — built to IEC 60947-2 with 25–65 kA breaking capacity and adjustable thermal-magnetic trip settings. CNC YCM1 (entry-level) and YCM7 (premium) families cover 3-pole and 4-pole configurations from 20 A to 1250 A. Above 100 A use 4-pole MCCBs to switch the neutral as well, ensuring complete isolation during maintenance.

Frame	Amp range	Use
YCM7-100 frame	20–125 A	Light commercial feeder
YCM7-250 frame	160–250 A	Mid factory main / large motor
YCM7-630/1250	400–1250 A	Large factory / commercial tower

For 3-source coordination see the MCB / MCCB / ACB / ELCB decision tree.

Updated: June 10, 2026 · CNC Electric Pakistan

AC MCCB Breaker — Pakistan Quick Answer (May 2026)

An AC MCCB is the standard moulded-case circuit breaker used in Pakistan for AC distribution circuits rated 15 A – 1,600 A at 230V / 400V AC — protecting sub-mains, motor circuits, and factory distribution from overload and short circuit. Distinguished from DC MCCB by its arc-chamber design (relies on 50 Hz zero-crossing for arc extinction) and non-polarity-marked terminals. CNC 2026 prices range from Rs. 1,200 (3P 25A 36kA) to Rs. 35,000 (4P 800A 50kA).

AC Distribution Use	Recommended AC MCCB	CNC Model	2026 PKR
Small commercial sub-main	3P 25-32A 36 kA	YCM1-100 3P 32A	1,200
3-phase home / office main	4P 63A 36 kA	YCM1-100 4P 63A	2,800
Shop / small factory 30-50 kVA	3P/4P 100A 36 kA	YCM1-100 4P 100A	4,500
Factory sub-main 80-120 kVA	3P 160A 50 kA	YCM1-225 160A	7,800
Motor protection 75 HP	3P 250A 50 kA (MA type)	YCM1-250 MA	13,500
Heavy industrial 300-500 kVA	4P 400A 65 kA	YCM1-400 4P 400A	22,500
Main incomer 500-700 kVA	4P 800A 65 kA	YCM1-800	35,000

AC MCCB vs DC MCCB: AC uses 50 Hz zero-crossing to extinguish arc. DC needs magnetic blow-out (no zero-crossing). Never use AC MCCB on solar DC string — will fail catastrophically. For DC, use our DC MCCB collection.

How to Choose AC MCCB Frame Size

CNC YCM1 series comes in 6 frame sizes — pick the smallest frame that fits your current need:

Frame	Current Range	Common Use
YCM1-100	16-100 A	Residential / small commercial
YCM1-225	125-225 A	Small factory sub-main
YCM1-250	160-250 A	Motor protection
YCM1-400	315-400 A	Medium factory main
YCM1-630	500-630 A	Heavy industrial sub-main
YCM1-800	630-800 A	Large factory main (alternative to ACB)

AC MCCB FAQ — Pakistan

Q1: What is an AC MCCB?

An AC MCCB is a moulded-case circuit breaker designed for AC distribution circuits (230V / 400V) rated 15-1600 A. It protects against overload and short circuit, using the 50 Hz zero-crossing of AC current to extinguish the internal arc.

Q2: Price of AC MCCB in Pakistan?

CNC AC MCCB prices start at Rs. 1,200 for 3P 25A 36 kA (small commercial) up to Rs. 35,000 for 4P 800A 65 kA (heavy industrial). Most popular size for 3-phase Pakistani factories is 4P 100A at Rs. 4,500.

Q3: Can I use AC MCCB on solar DC?

No — never. AC MCCB cannot extinguish DC arcs. Use the DC MCCB collection instead for any DC circuit.

Q4: What's the difference between MA-type and standard AC MCCB?

Standard MCCB has thermal-magnetic trip (protects from both overload and short circuit). MA-type has magnetic-only trip (no thermal element) — used for motor protection where a separate overload relay handles thermal protection.

Q5: Adjustable trip — when do I need it?

100A+ AC MCCBs have adjustable thermal-magnetic trips. Set lower than rating during commissioning (e.g., 80% setting on 100A MCCB) for tight protection. Increase only if false-tripping occurs from legitimate inrush.

Q6: Is CNC AC MCCB PSQCA approved?

Yes. All CNC YCM1 series MCCBs carry IEC 60947-2 compliance and PSQCA approval. Holographic sticker on side panel.

Protect your electrical systems with the CNC Electric AC MCCB Breaker, engineered for high-performance, durability, and precise protection. CNC MCCBs are designed to handle heavy current loads, short circuits, and overload conditions, making them ideal for both industrial panels and commercial installations in Pakistan.

Crafted with a molded case design and superior tripping mechanism, these breakers deliver reliable protection while ensuring easy installation and maintenance. The CNC AC MCCB Breaker is perfect for maintaining safe power distribution, extending equipment life, and minimizing downtime.

Key Features

Heavy-Duty Protection: Safeguards against overload, short circuit, and phase faults
Durable Molded Case: Fire-resistant, heat-resistant, and impact-proof design
Precision Tripping Mechanism: Fast and reliable response to electrical faults
Wide Compatibility: Works with single-phase & 3-phase electrical systems
Long Lifespan: CNC’s trusted build quality for consistent performance
Professional Installation: Fits seamlessly in DB boxes, MCC panels, and industrial distribution boards

Why CNC AC MCCB Breaker?

CNC Electric has built a reputation for producing reliable, high-quality electrical protection devices. Their AC MCCB Breakers ensure:

Protection for electrical appliances and industrial machines
Safety in commercial & residential power distribution
Reduced risk of electrical faults, fire hazards, and downtime
Optimal performance under continuous load conditions

It’s the preferred choice for electricians, panel builders, solar technicians, and industrial engineers who demand reliability and precision.

FAQs - AC MCCB (Molded Case Circuit Breaker)

1.What is an AC MCCB (Molded Case Circuit Breaker)?

An AC MCCB is an electrical protection device used to protect electrical circuits from overload, short circuits, and electrical faults. It is specifically designed for alternating current (AC) systems and is capable of disconnecting the power supply when a fault is detected.

2. What are the advantages of using an MCCB?

Overload protection: MCCBs are designed to prevent circuit damage caused by overloads.
Short-circuit protection: They protect against short-circuit conditions, preventing equipment and wiring from damage.
Adjustable settings: Some MCCBs allow for the adjustment of the trip settings to accommodate different load conditions.
Reliability: MCCBs provide reliable protection in various industrial and commercial applications.

3. How does an MCCB work?

An MCCB works by detecting faults (such as overloads or short circuits) in an electrical circuit. When a fault occurs, the MCCB disconnects the circuit, preventing further damage. It uses thermal or magnetic mechanisms (or both) to sense and react to faults.

4. What is the difference between an MCB and an MCCB?

MCB (Miniature Circuit Breaker) is used for low-current applications, typically in residential and commercial settings. MCCB, on the other hand, is used for higher current and industrial applications, providing greater flexibility in adjusting trip settings.

5. Can MCCBs be used in residential applications?

While MCCBs are primarily designed for industrial and commercial use, they can be used in residential applications for high-power systems and for protecting larger appliances and installations.

6. What are the different types of MCCBs?

Thermal MCCBs: These trip when an overload condition is detected using thermal sensing.
Magnetic MCCBs: These trip in case of a short circuit by using magnetic force.
Thermomagnetic MCCBs: These combine both thermal and magnetic tripping mechanisms for enhanced protection.

7. What is the breaking capacity of an MCCB?

The breaking capacity of an MCCB refers to its ability to safely interrupt and disconnect a circuit during a fault. It is typically measured in kA (kiloamperes) and depends on the model and application requirements.

8. What should I consider when choosing an MCCB?

Current Rating: Ensure the MCCB is rated for the expected current in the circuit.
Voltage Rating: Choose an MCCB that matches the voltage specifications of your system.
Breaking Capacity: Ensure the MCCB’s breaking capacity is higher than the fault level of your installation.
Tripping Characteristics: Consider whether you need a thermal, magnetic, or thermomagnetic MCCB based on the type of protection required.

9. How do I install an MCCB?

MCCBs should be installed by a licensed electrician to ensure correct installation and safety. The breaker should be mounted securely in an electrical panel and connected according to the manufacturer's instructions.

10. How often should I test an MCCB?

It’s recommended to test MCCBs periodically as part of regular maintenance. This ensures that the breaker is functioning correctly and is ready to protect the system in the event of a fault.

11. Can MCCBs be reset after tripping?

Yes, MCCBs can be manually reset after they trip. However, the cause of the trip should be investigated and resolved before resetting to ensure there are no further issues.

12. What are the common applications of MCCBs?

Industrial plants
Commercial buildings
Power distribution panels
Motor control centers (MCCs)
Heavy-duty machinery and equipment

13. What is the warranty period for MCCBs?

The warranty period varies by manufacturer and model. Typically, MCCBs come with a warranty ranging from 1 to 2 years, depending on the specifications and conditions of use.

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