Mars L350-4 Limit Switch, Open on Temp Rise at 350, Auto Close at 310 (39033)

About the Mars L350-4 Limit Switch, Open on Temp Rise at 350, Auto Close at 310 (39033)

Get a deal on the Mars 39033 350 Limit Switch L350-40 Auto Reset 3/4" and get a great solution for your system. 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 has made a name for itself by manufacturing reliable heating and cooling products.