Lennox 26H78 Rollout Switch Manual Reset SPST 260°F

The Lennox 26H78 is a Rollout Switch Manual Reset, an essential safety component applied to HVAC equipment mostly in furnaces and air conditioners. It serves as a switch, which is activated in the event of the occurrence of high temperatures. Here is how it work the switch is used to monitor the temperature inside the unit. In case the temperature goes high, then a switch blows off the power supply to the furnace to avoid harming the equipment and fire risks. This means that to restart the system after the temperature has dropped, you will have to push a button that is usually on the switch.