Te connectivity mt series 10a plug in relays general purpose te connectivity 9 1393091 7 a 10a 11 pin plug in multimode relay with 3pco contacts and a 24v ac 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 mt326024 3pco relay 10a 24vac multimode 11 pin