Residual current circuit breakers RCCBs - Residual current circuit breakers EFI Features of residual current circuit breakers EFI  Rated conditional short-circuit current : 10 kA  AC - pure sinus residual current,  A - AC + pulsating direct current  B - AC + A + smooth direct current + high frequency (1kHz)  B+ - AC + A + smooth direct current + high frequency (20kHz)  Quality seal for tested reliability  Real contact position indication for easier contact status identification  Test button enables user to check residual functionality  Various quality marks  RCCBs can be supplied with single phase and three phase busbars  The terminals accept not only wires but also time saving busbars  Supply is possible both from top and bo

Residual current circuit breakers Residual current circuit breakers can be used in TN-S, TN-CS, TT and IT network systems, or with other words, in all systems where neutral and protective conductors are separated. Residual current circuit breakers EFI are used for protection against indirect contact (fault protection) and direct contact (additional protection) of parts under voltage. In the case of protection against indirect contact (fault protection) you can use residual current protective devices with a rated residual current of I < 300mA. Residual current protective devices with a rated residual...

Residual current circuit breakers Use of AC, A, and B type of RCCB’s in case of different fault conditions AC Single phase Phase control Single phase rectifier Two-pulse bridge Two-pulse bridge, half controlled Two-pulse bridge between phases Single phase with smoothing IL L Three-phase star Six-pulse bridge between phases

A and AC type residual current circuit breaker EFI-2 Rated residual current Rated current Type 0,03 - 0,5 A 16 - 80 A A, AC A and AC type residual current circuit breaker EFI-4 Rated residual current Rated current Type EFI-4 Type A, EFI-4 Type AC Newt * Version with N-pole on the left side is also available. 32 Technical data on page 60

Features and advantages of UNIVERSAL CURRENT SENSITIVE RCCBs B type and B+ type asti APPLICATION ■ Fault protection (protection against indirect contact of live parts) ■ Additional protection (protection in case of direct contact of live parts, IAn<30mA) ■ Fire Protection (for locations exposed to fire hazard) Residual current sensitivity - UNIVERSAL AC pure sinus residual current, 50/60Hz A sinus and pulsating direct current, 50/60Hz B AC + A + smooth direct current + high frequency (1kHz) B+ AC + A + smooth direct current + high frequency (20kHz) Basic types according to rated values: 4p...

Residual current circuit breakers Rated residual current Rated current Type 34 Technical data on page 63

a - contact = make contact (NO) b - contact = break contact (NC) Shunt trip release DA EFI Technical data on page 63, 66 35