Supco SHL200 Limit Switch L200-40°F

Supco SHL200 Thermostat Limit Control L200-40F is an essential temperature switch component used to monitor, and regulate air conduction within heating equipment in HVAC systems. It operated as a high-limit control that opens the electrical circuit when the temperature reaches a set threshold and resets once the system cool. Installed inside furnaces, air handlers and similar HVAC systems it protects components such as heat exchanger and blower assemblies from overheating. It is mounted on ducting or within the furnace plenum where it directly senses airflow temperature. It role is to maintain safe operating condition and ensure controlled shutdown during excessive heat event.