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Bard 8402-217 is an OEM limit control used to monitor temperature and help protect Bard HVAC equipment by opening the circuit if temperatures rise beyond the control setpoint, supporting safe and reliable unit operation. Commonly listed as a 50F to 250F limit control, this component is a direct-fit replacement intended to restore proper high temperature safety and control response when the original limit is out of tolerance, intermittently tripping, or has failed. Confirm your model and wiring configuration before ordering, since limit controls can vary by temperature range, mounting style, and sensing length across Bard wall mounted and packaged units.