Circuit breaker 25kA, In=100A, characteristic D. 4-pole. AZ-4-D100 174548

Overcurrent circuit breaker – reliable protection of electrical installations

This four-pole overcurrent circuit breaker with D characteristic is a solid solution for protecting electrical circuits against overloads and short circuits. Rated current of 100A and high short-circuit breaking capacity of 25kA guarantee effective protection even in demanding conditions. This circuit breaker is used both in home and industrial installations where high reliability and safety are required.

Features and application

The AZ-4-D100 circuit breaker is designed to operate in three-phase circuits with a voltage of 400V. The D characteristic provides delayed tripping during short-term overloads, which is particularly important when connecting devices with electric motors or other loads with high starting current. This avoids unnecessary tripping of the circuit breaker during normal operation of the devices. Energy limitation class 3 and surge category 3 confirm its high resistance to interference. A width of 6 modules facilitates mounting in standard distribution boards.

Advantages and benefits

• High short-circuit breaking capacity (25kA): ensures effective protection of the installation even in the event of serious failures.
• D characteristic: ideal for protecting circuits with loads with high starting current, minimizes the risk of false tripping.
• 4 poles: allows comprehensive protection of a three-phase circuit with or without a neutral conductor.
• Compliance with IEC 60947-2 standards: guarantees safety and reliability of operation.
• Expandability: compatible with additional accessories, allowing it to be adapted to individual installation needs.
• Protection degree IP20: provides protection against accidental contact, but does not protect against the effects of water or dust – remember to provide appropriate working conditions.
• Rated impulse withstand voltage Uimp 4kV: increased resistance to impulse overvoltages, which translates into longer life and reliability of the device.
• Width of 6 modules: compact dimensions allow for efficient use of space in the distribution board.

Thanks to railway approvals, this circuit breaker can also be used in specific applications related to railway infrastructure, where particularly high standards of safety and reliability are required.