CMD Contactor Monitoring Relay

Redundant connection of contactors no longer necessary

The contactor monitoring relay CMD monitors the contactor´s main contacts for welding. In the case of welding the relay switches off the upstream circuit-breaker. Because of this circuits in safety catergory 3 no longer need to have a second contactor that redundantly switches off.

Using the CMD, circuitry can be designed that corresponds to Performance Level d according to ISO EN 13489.

Further information about the contactor monitoring relay

Product description on the moeller.net
Practical tips from the wiring manual