121-704

Ensure the safe and efficient operation of your heating system with this premium high-limit control fan disc switch. Designed as a critical safety component for furnaces and HVAC units, this switch monitors internal temperatures to prevent overheating and manages blower fan cycling. If your heating system is cycling off prematurely or the blower fan fails to activate during a heat cycle, a faulty limit switch is often the primary cause. This thermal safety disc features a precision snap-action mechanism for reliable performance, helping to protect your equipment from heat-related damage while maintaining a consistent climate in your home. It is an essential replacement part for maintaining residential and light commercial forced-air heating equipment.
Type: Fan Disc High Limit Control Switch
Size: Compact
Dimensions: Standard disc diameter
Application: Commonly used in gas and electric furnaces, air handlers, and HVAC systems to regulate fan operation and provide high-temperature safety shut-off protection.
Specifications: Snap-action thermal disc, automatic reset, high-temperature safety cutout, dual-terminal connection.