120-939

This automatic reset high limit control switch is a critical safety component designed for HVAC systems and forced-air furnaces. Functioning as a fan disc thermal cutout, this switch monitors the internal temperature of your heating equipment to prevent overheating. When the temperature reaches the pre-set high limit of 130°F, the switch automatically opens the circuit to shut down the burner or heating element, protecting the appliance from heat damage. Once the system cools back down to 100°F, the switch resets itself to restore normal operation. This durable, snap-action disc switch is essential for maintaining safe operating temperatures and extending the lifespan of residential and commercial heating units.
Type: Fan Disc High Limit Control Switch
Size: Standard Fan Disc
Application: Commonly used in furnaces, air handlers, and HVAC heating systems as a safety limit or fan control device.
Specifications: Open Temperature: 130°F; Close Temperature: 100°F; Reset Type: Automatic; Configuration: Normally Closed (NC)