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The Bard 8407-065BX is an OEM control transformer used in Bard wall mounted HVAC equipment to step down incoming 208/230 to 208/240 volt power to a stable 24 volt supply for low voltage controls like relays, contactors, and circuit boards. Rated at 75 VA, it is sized for typical Bard control loads and helps prevent nuisance control issues caused by weak or mismatched transformers. This boxed transformer assembly includes an integral circuit breaker for added protection, making it a direct replacement when a damaged, overheated, or intermittently failing transformer is causing no control power, blown low voltage fuses, or erratic operation. Confirm primary voltage and wiring match your specific Bard model and parts list before ordering to ensure proper fit and safe operation.
Bard uses suffixes like "BX" to manage parts internally. These do not change the physical form or function of the part.
A part number ending in "BX" simply means it is packaged in a box for shipping, rather than for internal assembly use.
Example: 8406-142BX is physically identical to 8406-142.