Description
The Supco L155 Limit Switch L155-20F is a temperature-sensitive safety control used to monitor heat levels inside furnaces, air handlers, unit heaters, and other HVAC systems. It automatically opens the electrical circuit when temperatures reach, preventing overheating that could damage internal components or interrupt system operation. Commonly mounted near heat exchangers or blower compartments and this limit switch plays a protective role within heating systems by regulating airflow and temperature response during operation. Its automatic reset operation allows the circuit to restore once temperatures return to a normal range supporting continued equipment performance and system safety.
