2063145 Реле диференційне (ПЗВ) EFI-4 80/0,1 тип AC (10kA)

ETI EFI-4 is a residual current device designed to monitor leakage currents and disconnect an electrical circuit when a dangerous current imbalance occurs. It is used in distribution boards of residential, commercial, and industrial installations where protection of people and electrical equipment against electric shock and the consequences of insulation faults is required. This model is rated for 80 A and operates in AC networks with a nominal voltage of 415 V and a frequency of 50/60 Hz. The residual operating current is 0.1 A, which makes the device suitable for circuits that require differential protection at this tripping level. Type AC indicates response to sinusoidal alternating residual currents. The device is intended for systems where this type of leakage-current detection is specified. The unit has a 3+N, four-pole configuration, making it appropriate for three-phase networks with a neutral conductor. It is mounted on a TH 35 DIN rail, which allows straightforward installation in standard modular switchboards. The enclosure depth is 68 mm, an important detail for panel layout and space planning inside the cabinet. The terminal cross-section range is 1 to 25 mm², providing compatibility with common wiring practices used in electrical assemblies. The short-circuit withstand current Inc is 10 kA. The device complies with IEC/EN 61008, which confirms conformity with the relevant standard for residual current devices without integral overcurrent protection. The IP20 protection rating means the product is intended for installation inside an electrical enclosure, where access to live parts is limited. Overall, ETI EFI-4 is a functional solution for differential protection in circuits where defined tripping parameters, standard DIN-rail mounting, and operation in a three-phase network with neutral are required.