32 amp 3 pole Miniature Circuit Breaker

ATO 32 amp 3 pole miniature circuit breaker (MCB) featuring a 6 kA short-circuit breaking capacity, is designed for easy installation with standard rail mounting and provides reliable protection for electrical circuits in industrial, commercial, and residential settings.

3 Pole MCB Breaker Information

• Rated Current: 32 amp
• Rated Voltage: 230/400V AC, 50Hz
• Number of poles: 3 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

3 Pole MCB Breaker Dimensions (Unit: mm)

Details

Tips: Measurements of miniature circuit breaker prevent the burning of brake windings

Miniature circuit breakers (MCBs) play a crucial role in preventing the burning of brake windings in electrical systems, especially in motors and other high-power equipment. The key to this protection lies in the MCB's ability to detect overloads and short circuits.

MCBs are designed to trip (disconnect the circuit) when the current exceeds the safe operating limit. Overload protection ensures that if the current drawn by the motor or brake winding exceeds its rated value for an extended period, the MCB will disconnect the power supply, preventing excessive heat buildup that could otherwise lead to insulation breakdown or winding burns.

The mini circuit breaker’s breaking capacity ensures it can handle high fault currents without damage, while its trip characteristic—often a C or D curve for motors—provides adequate protection against inrush currents during startup without tripping unnecessarily.

By disconnecting the power during overload conditions or faults, micro circuit breakers safeguard brake windings and other sensitive components from overheating and subsequent damage.