2173422 Диф. автоматичний вимикач KZS-2M C 10/0,3 тип A (10kA)

The ETI KZS-2M differential circuit breaker is designed to protect electrical circuits against overload, short circuit, and leakage current. It combines the functions of an automatic circuit breaker and a residual current device in a single enclosure, which makes it suitable for distribution boards in residential buildings, commercial premises, and small industrial facilities. The 1+N pole configuration allows simultaneous control of the phase conductor and neutral, which is practical for single-phase lines. This model is rated for a current of 10 A, so it is intended for circuits with relatively low load. The residual current rating of 0.3 A provides disconnection when leakage currents exceed the permitted level, helping to protect the installation from fault conditions. Tripping characteristic C makes the device appropriate for circuits with moderate inrush currents, such as lines supplying equipment that may draw a short-term current surge at start-up. A breaking capacity of 10 kA ensures reliable interruption of high short-circuit currents, which is an important parameter for modern electrical networks with increased fault current levels. The device is of type A, meaning it reacts not only to sinusoidal AC leakage currents but also to pulsating DC components. This expands its applicability in installations that include electronic loads and other equipment with non-sinusoidal current characteristics. The rated frequency of 50/60 Hz allows use in commonly encountered power supply systems. The conductor cross-section range of 1–25 mm² simplifies installation in the panel and provides compatibility with different cable sizes. ETI KZS-2M complies with IEC/EN 61009, the standard governing differential circuit breakers. This confirms that the product is designed in accordance with the technical requirements applicable to combined overcurrent and residual current protection devices. Overall, this unit is a functional solution for protecting single-phase circuits where overload protection, short-circuit protection, and leakage current detection are required in one compact modular device.