Control electric circuits.
Protect people against indirect contacts and additional
protection against direct contacts.
Protect installations against fire hazard due to insulation faults.
Residual current circuit breakers are used in housing, tertiary
sector and industry.
Detectable wave form
Tripping is ensured for sinusoidal AC residual currents pulsed DC residual currents, alternating
Residual sinusoidal currents up to 1000Hz, pulsating direct residual currents and for smooth
Direct residual currents, whether applied suddenly or increasing slowly.
30mA-additional protection against direct contact.
100mA – co-ordinated with the earth system according to the formula I^n<50/R, to provide
Protection against indirect contacts;
300mA – protection against indirect contacts, as well as fire hazaed.
It ensures instantaneous tripping ( without time-delay).
1.3 Approvals and certificates
1.4 Add-on devices
AX-5 auxiliary contacts
TC-1 terminal cover