ETI KZS-1M UNI differential circuit breaker C 10A 0.01A type AC 6kA (2176112)

The ETI KZS-1M UNI differential circuit breaker is designed for combined protection of electrical lines against overload, short circuit, and leakage current. It is used in distribution boards for residential, commercial, and other low-voltage installations where one device must perform the functions of an automatic circuit breaker and a residual current protective device in a single housing. The 1P+N configuration allows switching of the phase conductor together with the neutral, which is convenient for single-phase outgoing circuits and simplifies panel integration. This model is rated for a current of 10 A and has a C tripping characteristic. Such a response curve is suitable for circuits with moderate inrush currents, including lighting groups and many household loads. The leakage current rating of 0.01 A indicates high sensitivity to earth leakage, which is important for additional personal protection and for monitoring insulation condition in the network. The differential protection function helps disconnect the circuit when a leakage current appears, while the overcurrent protection part responds to overloads and short circuits. The breaking capacity is 6 kA, so the device can be applied in networks where short-circuit currents may reach this level. The unit is intended for operation on 50/60 Hz systems, which makes it compatible with widely used electrical supply configurations. The stated nominal cross-section of 110 mm² should be considered during design and connection planning, especially when selecting conductors and assembling the distribution board. The device complies with EN/IEC 61009-1, the standard governing combined overcurrent and residual current protective devices. The KZS-1M-UNI series is suitable for protecting separate final circuits where compact combined protection is preferred over two separate modules. In practice, this makes the breaker appropriate for lighting circuits, selected socket groups, and other single-phase loads that require both overcurrent and leakage-current protection in one device.