ETI EFI-2 residual current device 100/0.03 A type A 10kA (2062530)

This ETI EFI-2 residual current device is intended for protecting electrical circuits against leakage currents and for increasing safety in residential, commercial, and small industrial installations. It monitors the difference between phase and neutral currents and disconnects the circuit when a residual current appears. With a rated residual current of 0.03 A, or 30 mA, it corresponds to a commonly used level of personal protection against electric shock. The device is rated for 100 A and operates at 230 V AC. Its type A operating principle means it responds not only to sinusoidal alternating residual currents, but also to pulsating direct components. This makes it suitable for circuits supplying modern electrical equipment where such leakage current forms may occur. The 1+N pole configuration is designed for single-phase networks with a neutral conductor, which is typical for many distribution boards and final circuits. A rated short-circuit current Inc of 10 kA indicates that the device can be used in networks with elevated requirements for breaking capacity. Compliance with IEC/EN 61008 confirms that this is a residual current device without integrated overcurrent protection, so it is used together with appropriate protective devices in the distribution system. The mounting depth of 69 mm should be considered during panel design and when selecting enclosures with limited internal space. Installation is carried out on TH 35 DIN rail, which ensures compatibility with standard modular switchboards and other modular equipment. The terminal design accepts conductors with a cross-section from 1 mm² to 35 mm², providing flexibility for different wiring configurations. With IP20 protection, the device is intended for installation inside electrical panels and other enclosed mounting cabinets, where accidental contact with live parts is limited. Overall, the EFI-2 combines residual-current monitoring, type A sensitivity, 1+N pole construction, and standard DIN-rail mounting. These characteristics make it a practical solution for distribution circuits where protection against leakage current and correct operation with a wide range of connected loads are required.