2173238 Диф. автоматичний вимикач KZS-2M C 40/0,01 тип A (10kA)

The ETI KZS-2M series differential circuit breaker is designed to protect electrical lines against overloads, short circuits, and residual currents. It combines the functions of an automatic circuit breaker and a residual current device in one enclosure, making it suitable for distribution boards in residential, commercial, and small industrial installations where compact protection of a single phase circuit is required. This model is rated at 40 A and has a C tripping curve, which makes it appropriate for circuits with moderate inrush currents. Such a characteristic is commonly used for lines feeding loads that may draw a short-term current increase at start-up, including equipment with motors or other devices with brief current peaks. The 1+N pole configuration provides protection of the phase conductor and switching of the neutral conductor, which is a typical solution for single-phase networks. The rated residual operating current is 0.01 A, or 10 mA. This high sensitivity is intended to improve personal protection and to detect leakage currents caused by insulation faults. The breaking capacity of 10 kA indicates the device’s ability to interrupt high short-circuit currents, which is important in networks where elevated fault currents may occur. The device is type A, meaning it responds to sinusoidal alternating residual currents and pulsating direct residual currents. This makes it suitable for modern household and office circuits that may include electronic equipment. The rated frequency of 50/60 Hz allows use in networks with either standard supply frequency. The permissible conductor cross-section range of 1 to 25 mm² supports flexible connection options during installation. The product complies with IEC/EN 61009, which defines the requirements for differential circuit breakers and confirms its applicability in standard modular switchboard systems.