Eaton CUTDH363NGK Heavy Duty Single-Throw Fusible Neutral Safety Switch 100 Amp NEMA 1 3-Pole 4-Wire 600 Vac 250 Vdc with enhanced visible blade provides a highly visible means of disconnect to help improve personnel safety and equipment protection. Additionally, they’re ideal for applications where reliable performance, safety, and service continuity are critical. Safety switches with enhanced visible blade are available in standard switch construction (as shown here) or with an optional viewing window.