Circuit breaker 25kA, In=40A, characteristic D. 3+N pole. AZ-3N-D40 174531

Overcurrent circuit breaker 25kA, 3+N pole – reliable installation protection

This three-pole overcurrent circuit breaker with an additional neutral pole (3+N) is a key element of every safe and efficient electrical installation. Designed by Eaton, model AZ-3N-D40 with a rated current of 40A and D characteristic, provides effective protection against overloads and short circuits. The short-circuit breaking capacity of 25kA guarantees safety even in the event of large voltage surges.

Design and application

The circuit breaker is designed for use in three-phase circuits with a voltage of 400V, and its compact dimensions (6 modules wide) allow for easy installation in standard distribution boards. The D characteristic makes this circuit breaker ideal for protecting circuits with receivers generating high inrush currents during start-up, such as electric motors or refrigeration units. The additional neutral pole enables full circuit protection, including against leakage currents.

Key features and benefits

• High short-circuit breaking capacity (25kA): Ensures reliable disconnection of the circuit in the event of a failure, minimizing the risk of damage and fire.
• D characteristic: Allows for safe starting of high-power devices without unnecessary tripping of the circuit breaker.
• 3+N construction: Provides full protection for a three-phase circuit with a neutral pole, increasing safety.
• Mounting on TH35 rail: Enables quick and easy installation in standard distribution boards.
• Compliance with IEC 60947-2 standards: Quality and safety guaranteed by certification.
• Width of 6 modules: Compact dimensions facilitate installation even in tight distribution boards.
• Protection degree IP20: Protection against contact with fingers and against the ingress of solid objects larger than 12.5 mm.

The Eaton AZ-3N-D40 circuit breaker is a solid and reliable solution for professionals and demanding users who expect the highest level of safety and protection for their electrical installation. Its versatility makes it suitable for both domestic and industrial installations. Additionally, the possibility of expanding with auxiliary accessories allows it to be adapted to the individual needs of a given facility.