543-051

This premium 3-inch high limit switch is a vital safety component designed for residential gas furnaces and HVAC heating systems. Engineered to protect your equipment from overheating, this thermal limit control monitors the heat exchanger's temperature. If the internal heat exceeds safe operating levels, the switch automatically interrupts power to the burner or heating elements, preventing damage and ensuring household safety. This reliable replacement sensor features a 200-degree Fahrenheit trip point and a 30-degree differential, making it an essential part for restoring proper cycling and function to a malfunctioning furnace. Ideal for HVAC technicians and DIY homeowners looking to repair heating units that are cutting out or failing to maintain consistent air temperatures.
Type: Furnace High Limit Control Switch
Size: 3-inch probe depth
Dimensions: 3 inches
Application: Used as a safety cutout in gas furnaces, forced air heating systems, and HVAC units to prevent heat exchanger overheating.
Specifications: Cut-out Temperature: 200°F; Differential: 30°F; Normally Closed (NC) configuration; L200-30F thermal rating.