Attributes . Eaton Heavy duty single-throw fused safety switch, 400 A, NEMA 1, Painted steel, Class H, Fusible without neutral, Three-pole, Three-wire, 600 V, Max Hp: 250, 350 hp (3PH @480/600 V), (2)#1/0-(2)300 kcmil; or (1)#1/0-(1)750 kcmil Al . Names