Circuit breaker 25kA, In=40A, B characteristic. 2-pole. AZ-2-B40 174496

Overcurrent circuit breaker – reliable protection for electrical installations

This two-pole overcurrent circuit breaker from the AZ series is a key element ensuring safety in every electrical installation. Designed to protect circuits against overload and short circuit, it offers high reliability and durability, confirmed by its breaking capacity of up to 25kA. Characteristic B provides a quick response to current increase, which is particularly important in circuits with devices with high inrush current.

Features and application

This circuit breaker is used in both home and industrial installations. Its compact size (width of 3 modules) makes it easy to install in distribution boards. The rated current of 40A makes it ideal for protecting circuits with medium loads, such as lighting, sockets or household appliances. Thanks to energy limitation class 3 and surge category 3, the circuit breaker provides effective protection against the effects of overvoltage and disturbances in the network.

• High breaking capacity: 25kA at 400V and 230V guarantees safe disconnection of the circuit in the event of a failure.
• Characteristic B: Provides a quick response to current increase, protecting against damage caused by overload or short circuit. This means the circuit breaker will quickly react to a sudden increase in power consumption by connected devices.
• Versatility: Suitable for use in AC installations with a rated voltage of 400V and an insulation voltage of 440V.
• Expandability: Compatible with additional auxiliary accessories, allowing you to adapt the functionality to individual needs.
• Solid construction: Made of high-quality materials, ensuring durability and reliable operation for a long time.
• IP20 protection: Protection against touching with a finger and solid objects larger than 12.5 mm – standard protection for devices mounted inside distribution boards.

Safety and compliance with standards

The circuit breaker meets strict safety standards, confirming its high quality and reliability. The rated impulse withstand voltage Uimp is as high as 4kV, which ensures resistance to transient overvoltages. Pollution degree 2 indicates the possibility of use in environments with a moderate level of pollution. In addition, the circuit breaker has railway approvals – which proves its high quality and reliability in demanding operating conditions. The installation depth of 75mm allows for easy installation in standard electrical distribution boards.