Safety Interlock Switch. Double Pole Single Throw (DPST). Used in White-Rodgers TTW1000 TTW1400 TTW2000 10C13T-410, 14C13T-410, 20C13T-410 and CSC1000, SSC1000, FSC1000.
When pressed continuity will exist between terminals Com1 -> O1 and between Com2 -> 02. See additional photos above to view the terminal labels.
Electrical rating 125 vac 10 amp 1/2 hp. Four 3/16 inch spade terminals.
Fits in rectangular hole of 1½ x ½ inch.