A Whalen Company PRCDPSTL004 Power Relay controls circuit switching as needed, coordinating dependable electrical function within the HVAC assembly.
The power relay switches line power on and off in response to a 24VAC control signal, allowing the heating and cooling unit to safely control higher-voltage loads. Its DPST contact design and 24VAC coil construction matter because they provide reliable isolation and simultaneous switching of two poles for stable operation in the HVAC system.
The power relay may need to be replaced if the heating and cooling equipment shows intermittent operation, fails to energize connected components or cycles unpredictably when a control signal is present. Physical signs can include burnt, pitted or welded contacts, while environmental signs may include corrosion, moisture exposure, dirt buildup or heat damage around the relay housing or terminals.
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