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Bard part 8402-057 is an OEM thermal cut-off (G4AM0400104) used as an over-temperature safety device in Bard wall-mounted and through-the-wall HVAC equipment. If abnormal heat develops, this protective cutoff is designed to open the circuit and help prevent damage to critical components and wiring, which can reduce nuisance shutdowns and costly repairs once the underlying airflow, electrical, or heat source issue is corrected. Because thermal cut-offs are safety controls and are typically one-time devices after a trip, match the part number exactly and confirm placement and ratings against your Bard unit model and wiring diagram before installation to ensure proper protection and reliable operation.
* Orders less than $50 may incure a minimum order fee.