Circuit breaker 25kA, In=40A, characteristic B. 4-pole. AZ-4-B40 174535

4-pole Overcurrent Circuit Breaker – Reliable Installation Protection

This four-pole overcurrent circuit breaker from Eaton's AZ series is a key element in protecting electrical installations. It provides effective protection against overloads and short circuits, protecting both devices and cables. It is characterized by a high short-circuit breaking capacity of 25kA at 400V and 230V, which guarantees a quick response in emergency situations.

The circuit breaker with a rated current of 40A and B characteristic is ideal for protecting circuits with devices with moderate inrush current. The B characteristic allows it to react quickly to overloads, but at the same time tolerates short-term current surges, typical for starting motors or transformers. A width of 6 modules makes it easy to install in standard distribution boards. The IP20 degree of protection provides basic protection against touch and ingress of solid objects.

Design features and application

The circuit breaker has been designed with durability and reliability in mind. Made of high-quality materials, it ensures long-term operation even in demanding conditions. The ability to mount additional accessories expands the functionality of the device, allowing it to be adapted to the specific needs of the installation. The rated impulse withstand voltage of 4kV increases resistance to overvoltages.

Application:

• Lighting circuit protection
• Protection of socket outlets
• Protection of household receiver circuits
• Industrial and commercial installations
• Electrical distribution boards

Advantages and benefits

• High short-circuit breaking capacity (25kA): ensures a quick and effective response in the event of a failure, minimizing the risk of damage.
• B characteristic: ideal for protecting circuits with devices with moderate inrush current, protecting them from unnecessary disconnection.
• TH35 rail mounting: simplifies and speeds up installation in standard distribution boards.
• Expandability: compatibility with additional accessories allows the circuit breaker to be adapted to individual needs.
• Compliance with IEC 60947-2 standards: guarantees the safety and reliability of the device.
• Durable construction: ensures long-term operation even in difficult working conditions.