THKMA30600WL 600A TKM Breakers by General Electric. Heavy duty industrial used in factories, Malls and heavy industry. Interchangeable trip, shunt trips, under voltage release mechanisms and auxiliary switches. Specs: molded case, thermal magnetic, k frame, 240/480/600 VAC, 600 ampere, 3 pole, interrupting rating 42 kiloampere at 240 VAC, 30 kiloampere at 480 VAC, 22 kiloampere at 600 VAC, terminal load lug, size 8 1/4 inch w x 5 1/2 inch d x 15 1/2 inch h, model, next model would be THKMA for higher interrupting ratings. TKMA30600WL