Overcurrent circuit breaker 25kA, In=20A, B characteristic. 3+N pole. AZ-3N-B20 174519

3+N Circuit Breaker – Reliable Installation Protection

This three-pole circuit breaker with a neutral pole (3+N) is a key element of every safe electrical installation. Designed by Eaton, model AZ-3N-B20 with a rated current of 20A and B characteristic, effectively protects circuits against overloads and short circuits. A rated short-circuit breaking capacity of 25kA guarantees high resistance to sudden current surges, which translates to long-term and trouble-free operation.

Construction and Application

The circuit breaker is designed for mounting on a DIN rail, occupying 6 modules in width. Its compact dimensions (installation depth 75 mm) allow for easy integration with existing distribution boards. Limitation class 3 and surge category 3 provide adequate protection in various operating conditions. Protection degree IP20 protects against accidental contact, increasing safety. The device is compatible with additional accessories, allowing for the expansion of the security system’s functionality.

The AZ-3N-B20 circuit breaker finds application in both residential and commercial installations – wherever reliable protection against the effects of overloads and short circuits is required. The B characteristic means that the circuit breaker reacts quickly to short-circuit currents, but tolerates short-term current surges during the starting of devices with a motor – which is particularly important for inductive loads. The rated insulation voltage Ui is 440V and the impulse withstand voltage Uimp is 4kV.