Mars L250-4 Limit Switch, Open on Temp Rise at 250, Auto Close at 210 (39029)

About the Mars L250-4 Limit Switch, Open on Temp Rise at 250, Auto Close at 210 (39029)

Enjoy savings on the Mars 39029 250 Limit Switch L250-40 Auto Reset 3/4" while supplies last online 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 manufactures heating and cooling solutions that are both innovative and practical.