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The Bard 8201-079BX is an OEM 24V solid state lockout relay used in Bard HVAC equipment to help manage safety lockout functions during fault conditions and keep the system from repeatedly attempting to run when an issue is detected. This control component is designed to match Bard wiring and operating logic so your unit can return to dependable, predictable starts and troubleshooting behavior after a failed relay. Verify the part number from your unit wiring diagram or service documentation before ordering, and have a qualified technician confirm application and correct installation.
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.