ABB Stotz-Kontakt 1SBN050400R1002 RC4-1/260 110-260 V AC 50/60Hz RC-type quenching element

RC4-1/260 is an RC surge suppressor designed to reduce the maximum surge peak value and limit the high bias frequencies that occur when a contactor is operated in the control circuit. Opening a contactor coil can cause high voltage peaks of several kV, which can cause interference and damage to sensitive electronics in the system. The RC4-1/260 can operate with a control voltage of 110 ... 260 V AC 50/60 Hz. The RC4 suppressor is mounted directly on the AFC contactor, either on top or bottom, and encloses the coil connection terminals. RC4 are specifically designed for AFC contactors or NFC relays.