The relay is one of the most common components found in the HVACR field today. From furnaces to condensers to control panels, relays are omnipresent. In addition to controlling motors, valves, and switches, there are a number of other applications for this electrical workhorse of a control. Today we will discuss the parts of a relay, its operation, and the various types of relays.
Armature — The part of the relay that moves when the coil is magnetized.