100A 3P3W 600V Non-fused Heavy Duty Steel enclosed Nema 12 safety switch for equipment and motor disconnect applications. Gasketed and latched hinged door resists penetration of dust, dirt and lubricating oil. High visibility red rotary operating handle can be padlocked for lock-out compliance. Compare with Siemens HNF363J, Square D HU363AWK, GE THN3363J and Eaton DH363UDK