Mars L160-4 Limit Switch, Open on Temp Rise at 160, Auto Close at 120 (39020)

About the Mars L160-4 Limit Switch, Open on Temp Rise at 160, Auto Close at 120 (39020)

Order the Mars 39020 160 Limit Switch L160-40 Auto Reset 3/4" here at PlumbersStock. Limit switches are sensors that detect when a furnace has exceeded operational temperature limits and shut the appliance down as a safety measure. The way it works is that if your temperature gets to a concerning level, the limit switch will automatically open the circuit so it shuts off. It will remain off until the switch automatically closes the circuit when the temperature reaches the off threshold. Mars makes products that we're proud to carry. Make sure you have the right part number, and if you aren't certain, try contacting us.