000-339

This premium auto-reset high limit control switch is a vital safety component for HVAC systems, designed to protect your heating equipment from overheating. Acting as a temperature-sensitive fan disc, this switch monitors the internal temperature of your furnace or air handler. When temperatures reach the upper threshold of 180°F, the switch interrupts the circuit to prevent system damage, automatically resetting once the unit cools back down to 140°F. Reliable and durable, this limit control ensures efficient operation and system longevity, making it an essential replacement part for malfunctioning heating units and climate control systems. It is engineered to provide precise thermal protection and restore safe operation to your appliance.
Type: High Limit Control Switch / Fan Disc
Size: Standard small-format disc
Application: Used in residential and commercial HVAC systems, specifically for furnace safety monitoring, blower motor control, and air handler thermal protection.
Specifications: Switching temperature: 180°F (opens on rise); Reset temperature: 140°F (closes on fall); Function: Automatic reset; Component style: Fan disc limit switch; Contact state: Normally closed.