ETI KZS-2M differential circuit breaker C 16/0.01 A type A 10kA (2173234)

The ETI KZS-2M differential circuit breaker is designed to protect single-phase electrical circuits against overload, short circuit, and leakage currents. It combines the functions of an automatic circuit breaker and a residual current protection device in one enclosure, which makes it suitable for use in residential, commercial, and general household electrical systems. This type of device is commonly installed in distribution boards to protect lighting circuits, socket groups, and other lines with connected loads. The device is rated for 16 A and has a C tripping characteristic, so it can be used in circuits with moderate inrush currents. The 1+N pole configuration means that one protected pole and the neutral conductor are integrated for operation in single-phase networks. The rated residual current is 0.01 A, or 10 mA, which allows the breaker to react to small leakage currents and increase protection for both people and connected equipment. Type A indicates that the unit responds to alternating leakage current as well as pulsating direct current, which is important for many modern loads. With a breaking capacity of 10 kA, this model is intended for networks where higher short-circuit currents may occur. The nominal frequency of 50/60 Hz ensures compatibility with widely used electrical supply systems. The terminal range of 1 to 25 mm² supports connection of conductors with different cross-sections during installation in switchboards, making wiring integration more flexible. The device complies with IEC/EN 61009, the standard that defines requirements for differential circuit breakers. This makes the KZS-2M a practical solution for both main and supplementary protection of individual electrical lines where overload protection, short-circuit protection, and leakage-current detection are required in a single modular device.