Relays, contactors, and starters

Relays, contactors and starters

Relays, contactors, starters can be used either as a primary or secondary inspection. When used to start and stop a compressor contactor is a primary control because it starts or stops the loop. When it is used to start or stop a single compressor only four commercial condensing unit, he works as an additional control. This is because it controls the output of the loop, rather than start and stop the cycle. Similarly, when he starts or stops the fan, pump motor, electric heating coil resistance, it serves as an additional control.

Thanks ->

Ref-Wiki.com -

Relays, contactors and starters