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The Bard 8407-062 is an OEM control transformer rated 75 VA that steps 460 VAC down to 24 VAC to power low-voltage circuits in Bard wall-mounted HVAC equipment, helping ensure reliable operation of contactors, relays, and control boards when the unit has 460V supply power. If your system is losing 24V control power or blowing low-voltage fuses, replacing the transformer with the correct Bard 8407-062 is the proper way to restore stable control voltage and maintain factory-correct fit and wiring.