what is this red box

mangurian

The power running to my burner comes off the panel and then to a ceiling  junction box.

Armored cable comes out of the junction box and down to the burner and a two

outlet (120V) box with a switch. When the switch is off the burner does not run.

There is a second cable out of the ceiling junction box that runs to a red square box (about 6" square)  also mounted to the ceiling. The red box has what looks like large black button in the center.



- Is this an emergency switch ? If so, how is it different from the other switch by the two outlets?



or



- Is it some sort of reset ?



thanks,

billtwocase

electrical

it is a 4" square thermal switch for the unit's electrical. It is spring loaded, and soldered. In case of fire or extreme heat, it will disconnect. It is not a reset