Circuit breaker 25kA, In=32A, characteristic B. 4-pole. AZ-4-B32 174534

Reliable protection of electrical circuits – 32A, 4-pole circuit breaker

This four-pole circuit breaker with B characteristic is a solid and effective solution for protecting electrical installations. The rated current of 32A combined with a short-circuit breaking capacity of 25kA guarantees effective protection against overloads and short circuits, minimizing the risk of damage and fire. The design adapted to work in AC networks (400V voltage) makes it a universal element of every installation.

Construction and application

The AZ series circuit breaker occupies 6 modules in width, which facilitates its installation in standard distribution boards. The B characteristic ensures a quick response to short-circuit currents, while allowing for short-term overloads that may occur during the starting of motors or other high-power devices. This makes it an ideal choice for protecting lighting circuits, socket circuits and electrical appliances in residential and commercial buildings. Application in overvoltage category III and pollution degree 2 confirms its resistance to harsh working conditions.

Key advantages and benefits

• High short-circuit breaking capacity (25kA): ensures the safety of the installation even in the event of serious failures.
• B characteristic: ideal for circuits with devices generating short-term current surges, e.g. motors.
• 4 poles: allows effective disconnection of all phase and neutral conductors in the event of a failure.
• Mounting on TH35 rail: quick and easy mounting in standard distribution boards.
• Expandability: compatible with additional accessories, allowing it to be adapted to specific installation needs.
• Compliance with standards: meets the requirements of IEC 60947-2 and EN 60898, guaranteeing safety and reliability.
• Solid construction: ensures long-lasting and trouble-free operation of the device.
• Protection class IP20: protection against contact with fingers and solid objects larger than 12.5 mm.

Additional information: The circuit breaker has a rated insulation voltage Ui of 440V and a rated impulse withstand voltage Uimp of 4kV, which confirms its high quality and safety. Energy limitation class 3 provides adequate protection against the effects of transient overvoltages.