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8406-040 OBSOLETE
- Hi Pres. Swt. Auto Reset Cut Out 410 PSI
Bard part number 8406-040 is an OEM high pressure safety switch used in Bard wall-mounted air conditioners and heat pumps to protect the refrigeration system when discharge or head pressure rises to an unsafe level. This switch is designed to open the control circuit at a 410 PSI cut-out and then automatically reset once pressure returns to a normal range, helping prevent compressor damage and nuisance shutdowns caused by airflow problems, blocked coils, or condenser fan issues. If you are troubleshooting high pressure trips, confirm the exact model and serial information for your unit and match the original pressure rating and wiring style so the control sequence stays correct and the equipment remains properly protected.
Official replacement(s):
8406-055
- Auto Reset High Press. Switch 450PSI