Differential circuit breaker ETI KZS-1M UNI C 20A/0.01A type AC 6kA (2176115)

This differential circuit breaker from ETI, KZS-1M UNI series, is designed to protect electrical circuits against overload, short circuit, and leakage currents. It combines the functions of an automatic circuit breaker and a residual current protection device, so it is used where it is necessary to control both current load and personal safety in the electrical installation. The device is suitable for installation in distribution boards of residential, commercial, and general-purpose electrical systems. The model has a 1P+N configuration, meaning one protected pole plus neutral. Its rated current is 20 A, which makes it suitable for circuits with corresponding load levels. The C tripping characteristic is intended for circuits with moderate inrush currents, for example lines supplying equipment that may briefly draw a higher current at startup. The breaking capacity of 6 kA indicates the ability to disconnect fault short-circuit currents in networks where this level is sufficient. The rated residual current is 0.01 A, which provides high sensitivity to leakage currents and is used for additional protection against electric shock and for reducing the risk of insulation damage. Type AC means the device is intended for alternating sinusoidal residual currents. The rated frequency is 50/60 Hz, which makes it compatible with widely used power network parameters. The product complies with EN/IEC 61009-1. The rated cross-section of 110 mm² is an important connection parameter during design and installation. Thanks to its technical characteristics, the KZS-1M UNI can be used as a compact solution for protecting individual circuits in distribution boards where combined overcurrent and leakage-current protection is required.