ETI KZS-2M Differential Circuit Breaker 1P+N B 10A 30mA Type AC 10kA (2173102)

ETI KZS-2M is a differential circuit breaker designed to protect single-phase electrical circuits against overload, short circuit, and residual current faults. It combines the functions of a miniature circuit breaker and a residual current device in one modular unit, which makes it suitable for distribution boards in residential, commercial, and auxiliary installations where compact protection of a line is required. The device is rated at 10 A and has a B tripping characteristic, so it is intended for circuits with relatively low inrush currents. This makes it appropriate for lighting circuits, socket groups, and other everyday single-phase loads. The 1P+N configuration means one protected pole plus neutral, which is a practical solution for single-phase networks. With a residual current rating of 30 mA, the breaker provides protection against electric shock and helps limit the impact of leakage currents on connected equipment. A breaking capacity of 10 kA allows the device to operate in networks with increased prospective short-circuit currents. Type AC indicates that it is designed for sinusoidal alternating residual currents, so it is used in installations with standard AC loads. The rated frequency of 50/60 Hz ensures compatibility with common supply systems. The breaker supports conductor cross-sections from 1 to 25 mm², which simplifies connection during panel assembly and provides flexibility for different wiring sizes. It complies with IEC/EN 61009, the standard applicable to differential circuit breakers, confirming that the device is intended for combined protection against overcurrent and earth leakage in modular switchgear.