547-150

This 7-inch high limit switch is a vital safety component designed for residential and commercial heating systems, including furnaces and HVAC units. Functioning as a thermal safeguard, this control switch monitors the temperature within the heat exchanger or plenum. It is engineered to automatically interrupt the electrical circuit if temperatures reach a predetermined safety threshold of 150°F, preventing overheating and potential damage to the appliance. Once the system cools by 30°F, the switch resets to allow for normal operation. If your heating system is short-cycling or failing to provide consistent heat, a malfunctioning high limit sensor may be the cause. This durable replacement part ensures your furnace operates within safe temperature parameters, protecting your equipment and maintaining home safety.
Type: High Limit Control Switch
Size: 7-inch insertion length
Dimensions: 7 inches
Application: Used primarily in forced-air furnaces, HVAC systems, and high-capacity heating appliances as a primary safety limit control.
Specifications: Cut-out Temperature: 150°F; Differential/Cut-in: 30°F; Automatic reset; Probe-style sensor.