Te connectivity mt series 10a plug in relays general purpose te connectivity 6 1393091 8 a 10a 11 pin plug in multimode relay with 3pco contacts and a 12v dc coil features a new test system with a front operated finger protected push to test button and an integral locking test tab suitable applications for this relay include plant control hvac systems etc te connectivity mt321012 3pco relay 10a 12vdc multimode 11 pin