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Bard part 8407-046 is an OEM control transformer used in Bard wall-mounted HVAC equipment to step down incoming 208/240 volt power to a stable 24 volt control circuit, supplying up to 40 VA for relays, contactors, and control boards. If your unit has no 24V output, weak control voltage, or repeated low-voltage control dropouts, replacing the transformer with the correct Bard-rated component helps restore reliable thermostat and control operation while maintaining proper fit and wiring compatibility with the original equipment.
* Orders less than $50 may incure a minimum order fee.