Residual current circuit breaker with overcurrent protection KZS-2M AC C16/0.03 002173124

Residual Current Circuit Breaker with Overcurrent Protection KZS-2M AC C16/0.03 is a reliable device for comprehensive protection of electrical circuits. It protects against electric shock, both in case of direct and indirect contact with live parts, and also protects against the effects of insulation damage and potential fire hazard. Additionally, it provides protection against overloads and short circuits.

It is a key element of electrical installation, used in TN-S, TN-C-S, TT and IT networks where the neutral and earth conductors are separated. Thanks to its compact size (2 modules wide) and installation depth of 69 mm, the circuit breaker easily integrates with existing infrastructure.

Construction features and functionality

The KZS-2M circuit breaker is characterized by high efficiency due to the use of characteristic C. This means that it reacts more slowly to short-term current surges – which is particularly important when connecting devices with motors or other elements generating inrush current – and at the same time ensures quick disconnection in case of overload or short circuit. The rated differential current of 0.03 A and AC sensitivity guarantee effective protection against dangerous leakage currents. The device also has a test button to allow regular checking of its functionality and a contact position indicator for quick identification of the circuit breaker status (ON/OFF).

Application and technical parameters

This circuit breaker is ideal for both professional installers and end users looking for reliable protection of their electrical installation. Designed to operate at a rated voltage of 230 V and a frequency of 50 Hz, it offers a rated short-circuit breaking capacity of 10 kA. It allows connection of solid and stranded conductors with a cross-section from 1 to 25 mm². It has a protection degree of IP20, which means protection against touching with a finger and solid objects larger than 12.5 mm. The rated differential current is 0.03 A and the rated insulation voltage Ui is 500 V. At the same time, it disconnects the N pole, which increases safety. The energy limitation class is 3.