ETI KZS-2M differential circuit breaker C 32 A 0.03 A type A 10 kA (2173227)

This ETI KZS-2M differential circuit breaker is designed for combined protection of low-voltage electrical circuits against overload, short circuit, and leakage currents. It is used in distribution boards of residential, commercial, and auxiliary premises where both overcurrent protection and residual current protection are required in a single modular device. The combination of functions helps simplify the layout of the electrical panel and reduces the number of separate protective devices. The device has a rated current of 32 A and a C tripping characteristic, which makes it suitable for circuits with moderate inrush currents. This is especially relevant for lighting and socket lines, as well as for loads that may create a short-term current increase during start-up. The residual current rating of 0.03 A provides protection against dangerous leakage currents and supports additional personal and installation safety. Type A indicates that the breaker responds not only to sinusoidal alternating residual current, but also to pulsating direct residual current. This feature is important for modern household and office loads, including equipment with electronic power supplies. The 1+N pole configuration means that one phase conductor and the neutral conductor are included in the protection circuit, which is a common solution for single-phase installations. With a breaking capacity of 10 kA, the breaker can be used in circuits where higher short-circuit currents may occur. The rated frequency of 50/60 Hz allows operation in networks with either standard frequency value. The permitted conductor cross-section range of 1–25 mm² provides flexibility when selecting wiring for installation in the panel. The device complies with IEC/EN 61009, confirming its designation as a differential circuit breaker for low-voltage electrical systems. The KZS-2M series is intended for modular mounting in distribution boards and is suitable for installations where compact size, combined protection functions, and compatibility with standard electrical network parameters are required.