000-458

This premium auto-reset high limit switch is a vital safety component for HVAC systems, designed to protect your heating equipment from overheating. Functioning as a fan disc thermal control, this switch monitors the heat exchanger temperature and automatically interrupts the heating circuit if the air becomes too hot, preventing potential damage to the furnace or air handler. It features a specific 190°F cut-off threshold and a 30°F differential, meaning the switch will automatically reset and restore operation once the system cools down to 160°F. Reliable and durable, this thermal protection switch is a common replacement part for residential and commercial furnaces, ensuring safe and efficient climate control during the heating season.
Type: Fan Disc High Limit Control Switch
Size: Compact
Application: Used in forced-air furnaces, electric heat handlers, and oil-fired heating systems to provide thermal overload protection and prevent heat exchanger damage.
Specifications: Temperature Trip Point: 190°F (Open on Rise); Temperature Differential: 30°F (Close at 160°F); Reset Type: Automatic; Switch Configuration: Normally Closed (NC); Mounting: Flush mount disc style.