Residual current circuit breaker EFI-4 AC 100/0.1 002062153

Reliable protection in your electrical installation

The EFI-4 AC 100/0.1 residual current circuit breaker (RCCB) is a key element ensuring safety in every electrical circuit. Its task is to protect against electric shock, both in the event of direct and indirect contact with live conductors, as well as to protect against fire hazard resulting from insulation damage. Mounted on a DIN rail, it will work in both home and industrial installations.

Functionality and technical parameters

This four-pole (4P) circuit breaker with a rated current of 100A and a voltage of 400V is characterized by high sensitivity to AC type differential currents. This means that it reacts to alternating currents, which is particularly important for protecting people. Short-circuit strength at 10kA guarantees its stable operation even in difficult conditions. Compact dimensions – width of 4 modules and depth of 68mm – make it easy to install even in crowded switchboards. The rated current of 100A provides protection for circuits with high power consumption, and the rated voltage of 400V guarantees compatibility with most standard electrical installations. High sensitivity to AC type differential currents effectively protects against alternating leakage currents, and short-circuit strength at 10kA ensures resistance to the effects of short circuits. A width of 4 modules saves space in the switchboard, and the ability to connect conductors with a cross-section from 1 to 25 mm², both solid and stranded, provides flexibility during installation. A wide range of ambient temperatures (-25°C to +55°C) allows installation in various environmental conditions.

Comfort of use and installation

The EFI-4 AC 100/0.1 circuit breaker has been designed with the convenience of installers and end-users in mind. It has a test button to regularly check functionality and an indicator of the main contact position for quick identification of the circuit breaker status (ON/OFF). Secured terminals minimize the risk of accidental contact with live parts, and the ability to seal the lever provides additional safety. The possibility of mounting additional accessories (auxiliary contacts, release devices) allows you to adapt the circuit breaker to the specific needs of a given installation. Thanks to this, the device is not only reliable but also easy to operate and maintain.