ETI EFI6-P4 residual current device 4P 63A 0.03A type A 6kA (2061663)

ETI EFI6-P4 is a residual current device designed to monitor leakage currents and disconnect an electrical circuit when dangerous operating conditions occur. It is used in distribution boards for residential, commercial, and administrative facilities where protection of people against electric shock and reduction of insulation fault risks are required. The device is built in a 3+N pole configuration, meaning it is intended for four-pole applications with a neutral conductor. Its rated current is 63A, so it can be applied in circuits with a substantial load level. The rated residual operating current is 0.03A, which provides sensitive protection against leakage currents and helps disconnect the circuit at a small imbalance between phase and neutral conductors. Type A tripping makes the device suitable for circuits where both sinusoidal AC residual currents and pulsating DC residual currents may occur, which is especially relevant for many household and office loads. The rated AC voltage is 415V, and the operating frequency is 50/60Hz. The short-circuit current rating Inc is 6kA, allowing the device to be used in networks with the corresponding prospective fault current level. These parameters make the unit suitable for integration into modular switchboards with standard electrical infrastructure. Mounting is performed on a TH 35 DIN rail, which simplifies installation and placement alongside other modular devices. The enclosure depth is 70 mm, so the device fits into typical switchboard layouts without requiring excessive installation space. The permitted conductor cross-section is 1–25 mm², which supports connection of common wiring sizes used in power distribution circuits. The IP20 degree of protection indicates basic protection against accidental contact with live internal parts after installation in a closed panel. The device complies with IEC 61008-1, the standard governing residual current devices without integral overcurrent protection.