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Bard 8401-036BX - 24V control relay

The Bard 8401-036BX is an OEM 24V control relay used in Bard wall-mounted HVAC equipment to switch power to key loads like the compressor and fan circuits when the control board or thermostat calls for operation. A failing relay can cause intermittent starts, no cooling, or chattering and overheating at the contacts, so replacing it with the correct Bard part helps restore dependable cycling and protects downstream components. This Bard 8401-036BX relay is intended for straightforward field replacement by matching the unit model and wiring layout to ensure proper coil voltage and terminal configuration.


  • Technical Specifications
  • Product number: 8401-036BX
  • Manufacturer description: Contactor 2-Pole 30 Amp -Boxed
  • Weight: 0.250 lbs
  • HTS Code: "8536.49.0075"

  • Previous Versions
  • 8401-036 (Obsolete, superseded by 8401-036BX)

$29.00 *

* Orders less than $50 may incure a minimum order fee.

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