Circuit breaker 25kA, In=63A, characteristic B. 4-pole. AZ-4-B63 174537

Four-pole circuit breaker with a rated current of 63A and B characteristic, is a reliable protection for electrical installations. It provides effective protection against overloads and short circuits, and its high short-circuit breaking capacity – up to 25kA – guarantees safety even in difficult conditions. This model from the AZ series is particularly recommended for applications requiring high reliability and resistance to interference.

Characteristics and application

This circuit breaker, thanks to its B characteristic, reacts quickly to current increase, making it an ideal choice for circuits with devices with high inrush current, such as motors or transformers. The rated voltage of 400V and the impulse withstand voltage of 4kV ensure compatibility with most standard electrical installations. The width of 6 modules facilitates mounting in switchboards. The IP20 degree of protection means that the device is protected against finger contact, which increases safety.

Advantages and benefits

• High short-circuit breaking capacity (25kA): ensures effective protection of the installation in the event of a short circuit. This is crucial for safety and minimizing the risk of damage.
• B characteristic: ideal for circuits with devices with high inrush current – allows to avoid unnecessary tripping of the circuit breaker during starting of motors or other loads.
• 4 poles: allow for comprehensive protection of the circuit, including the neutral (although this model does not disconnect it simultaneously).
• Expandability: compatibility with additional accessories allows you to adapt the functionality of the circuit breaker to specific installation needs.
• Compliance with standards: ensures reliable operation and safety.
• Durable construction: made of high-quality materials guarantees long life and reliability of the device.

Construction and mounting

The circuit breaker is mounted on a DIN rail, which facilitates and speeds up installation. Compact dimensions (installation depth 75mm) allow for mounting in limited space. Pollution degree 2 indicates resistance to dust and moisture, which increases the durability of the device in various environmental conditions. The design is not explosion-proof, so it should be used in places with appropriate working conditions.