4 pole mini circuit breaker (MCB) with a rated current of 10 amp is ideal for use in low voltage distribution systems. This miniature circuit breaker features a short circuit breaking capacity of 6 kA at 230/400V AC, ensuring that the breaker can quickly and effectively interrupt high fault currents, preventing potential fire hazards, equipment damage, and system failures.

4 Pole MCB Breaker Information

• Rated Current: 10 amp
• Rated Voltage: 230/400V AC, 50Hz
• Number of poles: 4 pole
• 6 kA rated short-circuit breaking capacity
• Compliant with IEC standard
• C curve trip characteristic
• With overload protection and short circuit protection function

Technical Data

4 Pole MCB Breaker Dimensions (Unit: mm)

Details

Tips: Common faults and solutions of miniature circuit breaker

Miniature Circuit Breakers (MCBs) are commonly used for protecting electrical circuits. Here are some common faults and their solutions:

Tripping without Load

• Cause: Mini circuit breaker may be faulty or worn out, or it could be due to an internal fault like insulation damage.
• Solution: Replace the MCB with a new one. Ensure no underlying circuit faults are causing the trip.

Frequent Tripping

• Cause: Overloading, short circuits, or earth faults.
• Solution: Check for overloaded circuits, and verify wiring for short circuits or grounding issues.

MCB Doesn't Trip on Overload

• Cause: The MCB's thermal element could be defective.
• Solution: Replace the faulty MCB.

Physical Damage

• Cause: External impact or deterioration over time.
• Solution: Replace the damaged MCB to prevent safety risks.

Failure to Reset

• Cause: Mechanical failure or internal fault.
• Solution: Inspect the micro circuit breaker and replace it if necessary.