EFI residual current circuit breakers are manufactured in the following versions: two-pole - EFI-2 and four-pole EFI-4 as instantaneous AC and A trip type, short-time trip type - G/KV, accidental surge proof (discharge) 3 kA (8/20 μs) trip type UT, selective - EFI-4S AC trigger type.
Advantages:
→ the possibility of railing the clamps from the bottom and from above,
→ any power connection (bottom or top),
→ wide range of rated currents,
→ easy mounting of the auxiliary contact,
→ solid mechanical construction.