Siemens SN426 is a heavy‑duty, 3‑pole fusible safety switch disconnect designed for indoor use in industrial power distribution, rated for 240 V and up to 600 A with a Vacu‑Break interruption mechanism. It accepts Class R fuses, provides a 200 kA interrupting rating at 240 V, and comes in a NEMA 1 enclosure for reliable, code‑compliant isolation of three‑phase circuits. Configured as a 3‑pole, 4‑wire device, the SN426 serves as a robust disconnect for motor feeders and safety isolation in manufacturing environments where dependable, rugged performance is essential.
