Residual current circuit breaker with overcurrent protection KZS-4M 3P+N AC B10/0.03 002174002

Residual Current Device with Overcurrent Protection – comprehensive protection for your installation

This KZS-4M 3P+N AC B10/0.03 residual current device with overcurrent protection is a reliable device that combines protection against electric shock, overloads and short circuits. It is a key element of every modern electrical installation, ensuring the safety of people and equipment. Designed for operation in TN-S, TN-C-S, TT and IT networks, where the neutral and earth conductors may be separated.

Functionality and application

This circuit breaker effectively protects against the effects of direct or indirect contact with live parts and protects against fire hazard caused by insulation damage. This minimizes the risk of failure and ensures uninterrupted power supply. Its versatility makes it suitable for both home and industrial installations. It will work everywhere where high reliability and effective protection of electrical circuits are required.

Characteristics and parameters

The KZS-4M circuit breaker is characterized by a rated current of 10A and a differential current of 0.03A. B characteristic ensures fast tripping in the event of short circuits, while allowing the starting of devices with higher starting current without unnecessary tripping of the circuit. The rated short-circuit breaking capacity is 6 kA, which guarantees effective protection in the event of serious disturbances in the network. The design with simultaneous disconnection of the N pole increases safety. The width of the device – 4 modules – facilitates mounting in electrical distribution boards. The conductor cross-section from 1 mm² to 25 mm² ensures compatibility with various types of installations.

This circuit breaker provides adequate protection for standard electrical circuits thanks to the rated current of 10A. High sensitivity to leakage currents, thanks to the rated differential current of 0.03A, increases user safety. The B characteristic is ideal for circuits with devices with moderate starting current (e.g. lighting). The short-circuit breaking capacity at 6 kA effectively protects against the effects of short circuits in the installation. 3P+N design allows protection of both phase and neutral and earth. Compact dimensions – 4 modules – facilitate mounting in the distribution board. IP20 protection class provides standard protection against finger contact and solid objects larger than 12mm for devices mounted inside distribution board enclosures. A wide range of wire cross-sections (1…25 mm²) allows adaptation to various electrical installations.

This circuit breaker provides a comprehensive solution for ensuring the safety and reliability of electrical installations for both professionals and end users.