Lennox 18J37 Limit Switch 5-inch diameter base that eliminates

5-inch diameter base that eliminates mechanical play in MP953 actuator setups

the S1-363-90117-700 acorn design provides essential protection for the bolt shank against rust and physical damage

Circuit Protection: Features a manual reset breaker to protect the secondary circuit from shorts and overloads

which is the standard for Honeywell and Barber-Colman linkage kits

this is an auxiliary switch designed for pilot duty and control signals

Lennox 18J37 Limit Switch 5-inch diameter base that eliminatesThe Lennox 18J37 Limit Switch is a critical safety component engineered for high performance thermal regulation in residential and light industrial furnaces. As a normally closed disc style limit control, this genuine OEM Lennox replacement part is specifically designed to prevent heat exchanger damage by interrupting the burner circuit if internal temperatures exceed safety thresholds. Featuring a yellow color coded sleeve for rapid field