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• 8407-042 OBSOLETE

• Transformer 480/24VAC 50 VA

Bard part number 8407-042 is an OEM control transformer rated 50 VA with a 480V primary and 24VAC secondary output, used to step down line voltage to safe low voltage power for thermostats and control circuits in Bard wall mounted HVAC equipment. Replacing a weak or failed transformer can resolve common issues like dead control boards, no contactor pull in, or intermittent low voltage, while keeping the unit operating within Bard electrical specifications. Verify primary voltage and mounting/lead configuration against your unit wiring diagram before ordering, and if your system references the updated service number, Bard lists direct replacements for 8407-042 under newer part numbers.