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Bard 8407-069BX - Control Transformer 400/480V to 24VAC

The Bard 8407-069BX is an OEM control transformer used in Bard wall mount HVAC equipment to step down incoming high voltage (400/480V primary) to 24VAC for the unit’s low-voltage control circuit. Rated at 50VA and commonly supplied with an integral 3 amp breaker, this transformer helps power critical components like contactors, relays, and safety controls while providing dependable control voltage under normal operating loads. Use this part when you have confirmed a failed transformer, nuisance low-voltage dropouts, or damage from a control-side short, and verify primary voltage and mounting compatibility against your Bard unit wiring diagram before ordering.


  • Technical Specifications
  • Product number: 8407-069BX
  • Manufacturer description: Transformer - Boxed 460/400-24 50VA ISB
  • Weight: 1.000 lbs
  • HTS Code: "8504.31.2000"

  • Previous Versions
  • 8407-069 (Obsolete, superseded by 8407-069BX)
  • S8407-069 (Obsolete, superseded by 8407-069BX)
  • S8407-042 (Obsolete, superseded by S8407-069)
  • 8407-042 (Obsolete, superseded by S8407-042)
  • 8402-037 (Obsolete, superseded by 8407-042)
  • 8407-037 (Obsolete, superseded by 8407-042)
  • 8407-040 (Obsolete, superseded by 8407-042)

$71.00

What does the "BX" suffix mean?

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.

This Part is Used in These Models ℹ️