120-639

This high-quality YORK/ETC high limit control switch is a vital safety component for HVAC systems, specifically designed for use in furnaces and air handling units. Functioning as a thermal fan disc, this switch monitors the internal temperature to protect your heating equipment from overheating. It features an L130 100F rating, meaning it automatically interrupts the electrical circuit when temperatures reach 130°F and restores power once the unit cools to 100°F. Replacing a malfunctioning limit sensor is necessary to ensure the safe operation of your heating system and to prevent potential damage to the heat exchanger. Engineered for precision and reliability, this replacement part helps maintain consistent climate control and system longevity.
Type: High Limit Control Switch
Size: Standard Fan Disc
Application: Heating and cooling systems, residential furnaces, and commercial air handlers
Specifications: Open temperature: 130°F; Close temperature: 100°F; Automatic reset functionality; Normally closed (NC) circuit configuration