001-145

The L150-30F High Limit Switch is a critical safety component designed for HVAC systems, furnaces, and commercial heating units. Functioning as a fan disc thermostat, this bimetal control switch monitors the internal temperature of your heating equipment to prevent overheating. If the unit reaches the preset temperature of 150°F, the switch automatically opens to break the electrical circuit, protecting the heat exchanger and surrounding components from heat damage. Once the system cools down by the 30°F differential (resetting at 120°F), the switch closes to resume normal operation. This reliable replacement part is essential for maintaining furnace safety, ensuring proper blower motor control, and extending the lifespan of your HVAC equipment.
Type: Fan Disc / High Limit Control Switch
Size: Compact / Standard Disc Size
Application: Commonly used in furnaces, rooftop units, air handlers, and industrial heating systems as a primary or secondary safety limit.
Specifications: Temperature Open: 150°F; Temperature Close: 120°F; Differential: 30°F; Reset Type: Automatic; Configuration: Normally Closed (NC)