120-676

The York/ETC Limit Switch 140-30F is a critical safety component designed for HVAC systems and residential furnaces. Functioning as a high-limit control and fan disc switch, this part monitors the internal temperature of the heat exchanger to prevent overheating. If the system reaches an unsafe temperature, the switch automatically interrupts the electrical circuit to shut down the heating element or burner, protecting the unit from damage and ensuring operational safety. Once the temperature cools by the specified 30-degree differential, the switch resets to allow normal operation. This reliable replacement part is essential for maintaining the performance and safety of gas and electric heating systems.
Type: High Limit Control / Fan Disc Switch
Size: Small format disc switch
Application: Commonly used in residential gas furnaces, electric heaters, and air handling units to monitor and control temperature limits.
Specifications: Temperature Open: 140°F; Temperature Close: 110°F (30°F Differential); Automatic reset functionality; Snap-action disc design.