Control Relays Control Relays It is a device through which contacts in one circuit are operated by an alteration in conditions in the same circuit or in associated circuits. Categories: control relay, SwitchGear Electricals Tag: control relay Enquire Now Related products Residual Current Circuit Breaker (RCCB’s) Read more Air Circuit Breakers Read more Miniature Circuit Breaker MCB Read more On Delay Timer Read more