True Manufacturing 800316 Defrost Termination Switch L55-15F

The True Manufacturing 800316 Defrost Termination Switch L55-15F is a temperature-sensitive control part that ends the defrost cycle by detecting evaporator coil temperature rise through a calibrated thermal sensing element and switching internal contacts when the set threshold is reached, allowing electrical interruption of the defrost heater circuit. It is mounted on the evaporator coil assembly using probe contact placement and secured wiring connections for stable signal transmission. It is used in an HVAC system within refrigeration and cooling equipment to maintain controlled defrost timing, improve energy efficiency, reduce overheating risk, and ensure consistent cooling performance during repeated operational cycles.