2062154 Реле диференційне (ПЗВ) EFI-4 100 0,3 тип A (10kA)

ETI EFI-4 is a residual current device designed to monitor leakage currents and disconnect an electrical circuit when a dangerous differential current appears. It is used in distribution boards of residential, commercial, and industrial electrical installations where protection of people and equipment is required in case of insulation failure or faults in connected loads. This model belongs to the differential relay category and is rated for a nominal current of 100 A. The residual operating current is 0.3 A, which defines the device’s sensitivity to leakage currents in the network. Type A operation means the unit responds not only to alternating residual current but also to pulsating direct residual current, making it suitable for circuits with modern household and office loads. The device is intended for AC systems with a nominal voltage of 400 V. The device has a 3+N pole configuration, so it is suitable for four-wire three-phase networks with a neutral conductor. The rated short-circuit current Inc is 10 kA, which allows use in circuits with increased requirements for fault-current interruption. The permitted conductor cross-section ranges from 1 mm² to 35 mm², making it easier to match the device with the wiring used in the installation. Mounting is performed on a TH 35 DIN rail, which ensures straightforward integration into standard modular switchboards. The housing depth is 68 mm. With an IP20 degree of protection, the device is intended for installation inside closed electrical panels. Compliance with IEC/EN 61008 confirms its suitability for low-voltage residual current protection systems where leakage monitoring, adequate breaking capacity, and compatibility with standard panel mounting are required.