000-929

This high-quality main limit switch thermostat is a critical safety component designed for HVAC systems and forced-air furnaces. Functioning as a high-limit control, this fan disc switch monitors internal equipment temperatures to prevent dangerous overheating. If temperatures exceed the safe operating range, the switch interrupts the electrical circuit to shut down the heating element or burner, protecting the appliance from thermal damage. It features an automatic reset mechanism that restores function once the unit cools to a safe level. This reliable snap-action thermal sensor is an essential replacement part for maintaining the performance and safety of residential and commercial heating units.
Type: High Limit Control Switch / Fan Disc Thermostat
Size: Standard snap-disc
Application: Used in HVAC systems, central furnaces, air handlers, and forced-air heating units to provide thermal overload protection and fan motor control.
Specifications: Cut-out temperature: 140°F; Cut-in temperature: 110°F; Differential: 30°F; Switch logic: Opens on temperature rise (Normally Closed); Type: L140-30F