Industrial-Grade Durability: The cast bronze body and brass trim are resistant to corrosion

Direct OEM Fit: Eliminates the need for bracket modifications or shaft cutting in ClimateMaster units

Engineered with a 65-inch outside circumference and a BX section profile

or carbon buildup on the sensor

and Payne outdoor units and rooftop systems

Markel 57640003 Limit 320788-703 Industrial-Grade Durability: The cast bronzeThe Markel 57640003 Limit Control is a critical safety component engineered for high performance thermal regulation in industrial and commercial heating systems. This L300F auto reset limit switch is specifically designed for 5100 series unit heaters ranging from 7kW to 10kW. Utilizing a sensitive capillary tube and bimetal disc, the 57640003 monitors temperatures near the heat exchanger and provides a reliable break in the electrical circuit when