2173425 Диф. автоматичний вимикач KZS-2M C 20/0,3 тип A (10kA)

ETI KZS-2M is a differential circuit breaker designed to protect electrical lines against overload, short circuit, and leakage currents. It is used in distribution boards of residential, commercial, and domestic installations where combined protection in one modular device is required. By integrating the functions of a circuit breaker and residual current protection, it helps simplify panel design and provides comprehensive line supervision. The device is rated for 20 A and has a C tripping characteristic, which makes it suitable for circuits with moderate inrush currents. This is relevant for socket groups, lighting circuits, and individual loads that may create short-term starting surges during operation. The residual current rating is 0.3 A, allowing the device to detect leakage currents and disconnect the circuit when unsafe operating conditions occur. Type A means the unit responds to alternating residual current as well as pulsating direct residual current, which is important for many modern electrical consumers. The 1+N pole configuration indicates one protected pole together with the neutral conductor. This format is commonly used in single-phase installations and provides the required switching and protection logic for the connected circuit. The breaking capacity of 10 kA allows the breaker to be used in networks where high short-circuit currents may appear, while the 50/60 Hz rated frequency supports operation in systems with either frequency standard. The unit is intended for installation in a distribution board on a DIN rail as a modular device. The permitted conductor cross-section range of 1 to 25 mm² gives flexibility during wiring and makes the product suitable for different electrical installation layouts. Compliance with IEC/EN 61009 confirms that this is a combined protective device for overload, short-circuit, and differential-current protection, meeting the requirements typically expected in modular low-voltage switchboard applications.