547-122

The 7-inch High Limit Switch L190-30F is a critical safety component designed for modern heating systems and HVAC equipment. This thermal limit control acts as a vital safeguard, monitoring internal temperatures to prevent your furnace or heating unit from overheating. If the temperature reaches its 190°F threshold, the switch automatically opens to break the electrical circuit, protecting the appliance from heat damage and ensuring safe operation. With a 30°F differential, the switch is engineered to reset once the system cools to a safe level. This reliable sensor is a common replacement part for residential and commercial furnaces where precise temperature regulation and safety are paramount.
Type: High Limit Control Switch
Size: 7-inch probe depth
Dimensions: 7 in
Application: Used primarily in gas and electric furnaces, HVAC units, and heating appliances to monitor internal plenum temperatures and provide over-temperature protection.
Specifications: Cut-out temperature: 190°F; Differential: 30°F; Configuration: Normally Closed (NC) - Opens on Rise; Probe length: 7 inches.