Tags: Power Relays

HVAC Power Relays

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HVAC Power Relays

One of the control devices is the power relay. It is one of the most often used controls for controlling compressors in refrigeration and air-conditioning. The power relay is also referred to as the main conductor. It is used to apply the main line voltage to the motor circuit. The coil of the relay is …

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HVAC Power Relays

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HVAC Power Relays

A heavy-duty power relay that operates from solenoid action is shown in Fig. 6-20. In this device, a spring pulls the solenoid core, or armature, away from the electrical contact when the current is off. When current flows, the armature is pulled toward the coil. An electrical contact connected to the armature is either closed …

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