ETI KZS-1M UNI differential breaker C 20A 0.01A type A 6kA universal connection (2176015)

This ETI differential breaker from the KZS-1M UNI series is designed to protect electrical lines against overload, short circuit, and residual current. It is used in distribution boards for residential, commercial, and household installations where combined protection functions are required in a single device. The 1P+N configuration makes it suitable for single-phase circuits with a neutral conductor, so it can be applied to lighting circuits, socket groups, and other loads with moderate inrush currents. The rated current is 20 A, which defines the operating load of the protected circuit. C tripping characteristic allows the device to work correctly in circuits where short-term inrush currents may occur, for example when switching on equipment with electric motors. The residual current rating is 0.01 A, so the breaker offers high sensitivity to leakage currents and disconnects the line quickly when dangerous current leakage to earth appears. Type A means the device responds not only to sinusoidal alternating residual current, but also to pulsating direct residual current, which is important for many modern household and electronic loads. The breaking capacity of 6 kA indicates suitability for networks with corresponding short-circuit current levels. The rated frequency of 50/60 Hz ensures compatibility with common electrical supply systems. The universal connection design simplifies installation and makes the device convenient for use in standard modular distribution equipment. The rated conductor cross-section is 110 mm², reflecting the connection parameter within the structural limits of the product. The device complies with EN/IEC 61009-1, the standard that defines requirements for residual current operated circuit-breakers with integral overcurrent protection. In practice, this makes the KZS-1M UNI a solution for local circuit protection where overload, short-circuit, and leakage-current protection must be combined in one compact modular unit.