Overcurrent circuit breaker 25kA, In=40A, B characteristic. 1-pole. AZ-B40 174483

Overcurrent circuit breakers AZ series – reliable installation protection

This single-pole overcurrent circuit breaker from Eaton's AZ series is a key element of electrical protection in every circuit. Designed to protect against the effects of overloads and short circuits, it ensures safety of use and durability of the installation. The rated short-circuit breaking capacity of 25kA guarantees an effective response in emergency situations, minimizing the risk of damage and fire.

A circuit breaker with a rated current of 40A and B characteristic is ideal for circuits with moderate loads, where short-term current surges occur, e.g. when starting electric motors. The B characteristic means that the circuit breaker reacts faster to overvoltage than models with a C characteristic, which is important for protecting devices sensitive to sudden voltage changes.

Construction and application

The AZ-B40 circuit breaker is made of high-quality materials, which translates into its reliability and long life. Compact dimensions (1.5 module width) allow for easy mounting in electrical switchboards with limited space. The IP20 degree of protection provides protection against accidental contact, but does not protect against the effects of water or dust – therefore, the circuit breaker should be mounted in dry and closed rooms.

Application:

• Lighting circuit protection
• Socket protection
• Protection of electrical devices with moderate power consumption
• Home and industrial installations
• Railway approvals – confirmed durability and reliability in demanding conditions

Key features and benefits

• High short-circuit breaking capacity (25kA): Provides effective protection of the installation against damage caused by a short circuit. This means greater safety and lower repair costs.
• B characteristic: Ideal for circuits with devices generating short-term current surges, e.g. motors – allows to avoid unnecessary tripping of the circuit breaker during normal operation of devices.
• Compact dimensions (1.5 module): Allows saving space in the switchboard, which is particularly important in the case of limited mounting spaces.
• Expandability: Compatibility with auxiliary accessories allows you to adapt the functionality of the circuit breaker to individual installation needs.
• Compliance with standards: Meets the requirements of IEC 60947-2 standards, which guarantees safety and reliability of operation.
• Rated voltage 230V and insulation Ui 440V: Wide range of operating voltages ensures versatility in various electrical installations.