Circuit breaker 25kA, In=125A, characteristic B. 3+N pole. AZ-3N-B125 174527

Overcurrent circuit breaker – reliable installation protection

This three-pole circuit breaker with a neutral pole (3+N) with a rated current of 125A is a key element of every safe electrical installation. Designed to protect circuits against overload and short circuit, it ensures stable operation and long-term reliability. Characteristic B makes it ideal for circuits with devices with high inrush current, e.g. motors – it allows it to react more slowly to short current surges, minimizing the risk of unnecessary tripping.

Construction and application

The circuit breaker is designed to operate in AC networks with a voltage of 400V, and its rated short-circuit breaking capacity reaches 25kA. Mounting on a TH35 rail (standard DIN rail) is simple and intuitive, making installation easier for both professionals and people with experience in electrical work. A width of 6 modules allows for efficient use of space in the switchgear cabinet. Energy limitation class 3 and overvoltage category III guarantee high resistance to interference and ensure effective protection in demanding conditions.

Key features and benefits

• High short-circuit breaking capacity (25kA): Ensures effective protection of the installation even in the event of serious failures.
• Characteristic B: Ideal for protecting circuits with devices with high inrush current, such as motors or transformers.
• Neutral pole (N): Enables full circuit protection, including against earth faults.
• DIN rail mounting: Quick and easy mounting in standard switchgear cabinets.
• Protection degree IP20: Protection against finger contact, suitable for mounting in switchgear enclosures.
• Expandability: Compatibility with additional accessories allows the circuit breaker to be adapted to specific installation needs.
• Compliance with standards: Meets the requirements of IEC 60947-2 and EN 60898 standards, guaranteeing safety and reliability.

This circuit breaker finds application in a wide range of electrical installations – from residential and commercial buildings to industrial facilities. It is a solid and reliable solution for anyone who values the safety and stability of their electrical installation.