Trip circuit protection relay SPER 1C1

DCwith fault indication

Continuous monitoring of circuit-breaker trip circuits and other essential control circuits The trip circuit supervision relay SPER 1C1 is used for supervising important control circuits, such as, circuit-breaker and disconnector control circuits and signalling circuits in power electrical installations. Generally, one supervision relay is needed per circuit to be supervised. If several branches of a circuit are to be supervised, the required number of relays can be connected to the same control circuit. If a rail-mounted or surface-mounted supervision relay is required, please refer to SPER 1B1 C4. Scope • Relay for man or backup circuit supervision Product benefits • Immediate information about faults Product features • Continuous monitoring of circuit-breaker trip circuits and other essential control circuits • Preset operate time preventing unwanted alarm signals at circuit-breaker operation • Indication of relay operation with LED indicator on the front panel and output relay • Detects bad contact, contact welding and auxiliary voltage failures in the supervised circuit