Engineered as a 3-pole fuse block

saving significant material costs and labor time on the job site

The control action is field-selectable via internal adjustments

It should not be used in steam or open-loop domestic water systems

York S1-8866-3281 Limit Switch 326058-757 Engineered as a 3-pole fuseThe York S1 8866 3281 Limit Switch is a critical safety component designed for fixed mount applications in specific York, Coleman, and Luxaire gas furnaces. This L130 35F temperature limit functions as a normally closed switch that opens the electrical circuit when the plenum temperature reaches 130F, preventing heat exchanger damage and potential fire hazards. As an auto reset thermal switch, it automatically closes once the temperature drops below