Mars MR160 Manual Reset Limit Switch, Open on Temp Rise 160 (39039)

About the Mars MR160 Manual Reset Limit Switch, Open on Temp Rise 160 (39039)

Order now and save on the Mars 39039 160 Limit Switch MR160 Manual Reset 3/4" at PlumbersStock online. 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. The circuit will remain open/off until it is manually reset. Mars replacement parts can be hard to find, so contact us if you have any problems.