Schneider Electric's Square D DTU366 safety switch is a non-fusible, three-pole, three-wire disconnect with a double-throw configuration, designed for indoor power isolation in 3‑phase circuits. It is rated for 600 A at up to 600 VAC (and 250 VDC), and it comes in a Type 1 enclosure suitable for general indoor use. At 600 VAC, the DTU366 supports up to 350 hp, making it appropriate for isolating feeders and heavy equipment in industrial power distributions. As part of the DTU safety-switch family, this model provides robust, reliable manual disconnection of loads in commercial and industrial facilities.
