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Bard part S8201-062 is an OEM 24V SPDT control relay used in Bard wall mounted HVAC equipment to switch low voltage control signals that energize higher voltage loads such as fans, heaters, alarms, or other control circuits. With contacts rated 3A at 277V, this relay is a common service replacement when a unit has intermittent operation, stuck contacts, or a relay that will not pull in under a 24V call. Replacing it with the correct Bard relay helps restore proper sequencing and reliable on off control while maintaining factory intended electrical compatibility across the control panel.