Circuit breaker 25kA, In=50A, B characteristic. 4-pole. AZ-4-B50 174536

Overcurrent circuit breaker – reliable protection for electrical installations

This four-pole overcurrent circuit breaker from Eaton's AZ series is a key element ensuring safety in every electrical installation. Designed to protect against the effects of overloads and short circuits, it guarantees stable and safe operation of electrical circuits. A rated current of 50A combined with characteristic B makes it an ideal solution for both home and industrial installations.

Features and application

This circuit breaker is characterized by a high short-circuit breaking capacity of up to 25kA at 400V and 230V. This means that in the event of a short circuit, the circuit breaker will quickly and effectively disconnect the circuit, minimizing the risk of damage and fire. Characteristic B provides a quick response to overvoltages, which is particularly important in circuits with receivers with high starting current - e.g. motors or transformers. A width of 6 modules makes it easy to install in standard distribution boards. Protection class IP20 protects against finger contact and the ingress of solid objects larger than 12.5 mm.

• High short-circuit breaking capacity (25kA): Ensures effective protection against serious installation failures.
• Characteristic B: Ideal for protecting circuits with receivers with high starting current – motors, transformers, etc. Allows for temporary overloads without unnecessary tripping.
• Four-pole design: Enables comprehensive protection of the entire circuit.
• Compliance with standards: The product meets strict safety standards, confirming its high quality and reliability.
• Expandability: Compatible with additional accessories, allowing you to tailor functionality to individual needs.
• Rated voltage 400V: Universal application in most electrical installations.

Design and parameters for professionals

The AZ-4-B50 circuit breaker has been designed with easy installation and reliable operation in mind. Its compact design (installation depth 75mm) allows for installation even in limited spaces. The rated impulse withstand voltage Uimp is 4kV, which ensures resistance to transient overvoltages. Energy limitation class is 3 and surge category is 3 - important parameters when designing surge protection systems. Pollution degree 2 indicates the possibility of use in environments with a moderate level of pollution. The design is not explosion-proof, which should be taken into account when choosing for specific industrial applications. The rated insulation voltage Ui is 440V ensuring safe use.