In accordance with UL Bulletin No. 508 "Industrial Control Equipment," contactor meet specifications for devices up to 600 VAC Silver plated contact with cover Box lugs and spade terminals standard on all sizes Class B coil insulation UL and cUL recognized Auxiliary switch and replacement coil available 50/60 Hertz 3 Pole 40 F/L inductive Amps 50 Resistive Amps 24 coil voltage Cutler-Hammer C25DNF340T General Electric 453AD3HBB Gemline GDP4030 Hartland Controls HCCY3XQ04CJ303 Mars 91431 Siemens Furnas 42CF35AJBCE Square D 8910DPA43V14