Heavy Duty safety switch disconnects are ideal for heavy industrial and public works applications where reliable performance and service continuity are critical. They include fusible and non-fusible disconnects, available in: 240, 480, 600 Volt AC/250,600 Volt DC; from 30-1200 Amp sizes, and in NEMA 1, 3R, 4, 4x, and 12 enclosures.