contact data, spst, ref dwg group 217, electrical ratings, ac, 220 v max, 20 amp nom current rating, 30 amp max nom current rating, 110 v; heater data, ac, dc, 115 v, approx 8 w; terminal data, 2 heater element terminals, 2 terminals for contacts; no ambient operating temp range rating; 30 sec time delay; over-all dim., excluding terminals, 2-1/2 in.dia, 1-1/4 in.h; three 1/4 in.dia mtg holes spaced 120 deg apart on 1 in.rod; for general purpose use;