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Bard part 8201-008 is an OEM SPST normally open relay with a 24V coil, rated for 8 FLA at 250V, used to switch HVAC loads on command from the unit’s low voltage control circuit. This relay is a common electrical control component in Bard wall-mounted equipment where reliable on and off operation is critical for proper sequencing and safe system performance. If you are troubleshooting intermittent operation, no-call conditions, or chattering contacts, replacing the relay with the correct Bard 8201-008 helps restore factory-correct switching and fit; also note that this part number is often shown as replaced by 8201-008BX, so confirm the exact part callout in your Bard wiring diagram or parts list before ordering.