Overcurrent circuit breaker 25kA, In=25A, characteristic D. 4-pole. AZ-4-D25 174542

Overcurrent circuit breaker – reliable protection for electrical installations

This four-pole circuit breaker from Eaton's AZ series, with a rated current of 25A and D characteristic, is a key element ensuring safety in every electrical installation. The short-circuit breaking capacity of 25kA guarantees effective protection against the effects of overloads and short circuits, minimizing the risk of damage and fires. Made of high-quality materials, this circuit breaker is characterized by durability and reliable operation.

Construction and application

The AZ-4-D25 circuit breaker is designed to protect electrical circuits in residential, commercial buildings and industrial facilities. The D characteristic makes it particularly recommended for protecting circuits powering devices with high inrush current, such as electric motors or transformers. Mounting is on a TH35 rail (standard mounting rail), and the compact dimensions (width of 6 modules) allow for efficient use of space in the distribution board. The IP20 degree of protection provides protection against accidental contact and the ingress of solid objects.

Key features and benefits

• High short-circuit breaking capacity (25kA): Provides effective protection of the installation against the effects of sudden voltage surges and short circuits.
• D characteristic: Ideal for protecting circuits with devices with high inrush current – motors, transformers, pumps. Allows for short-term overloads without unnecessary tripping of the circuit.
• Four-pole design: Allows simultaneous disconnection of all phases and the neutral conductor, which increases safety during maintenance and repairs.
• Mounting on TH35 rail: Standard mounting simplifies installation and replacement of the circuit breaker.
• Compliant with IEC 60947-2 standards: Guarantee of safety and reliability confirmed by certificates.
• Width of 6 modules: Compact dimensions allow for optimal use of space in the distribution board.
• Rated voltage 400V and rated impulse withstand voltage 4kV: Wide range of operating voltages ensures compatibility with various electrical installations.

Additionally, the AZ series offers the possibility of expansion with auxiliary accessories, allowing the circuit breaker to be adapted to individual user needs. Eaton circuit breakers are also approved for railway applications, which confirms their high quality and reliability in demanding applications.