Square D DTU363RB U Three-Phase Disconnect Switch

The Square D DTU363RB U is a non-fusible, three-pole, 3-wire safety disconnect switch rated for 600 VAC (600 VDC) and 100 A, configured as a double-throw to safely isolate three-phase circuits. Housed in a NEMA 3R enclosure with bolt-on hub provision, it supports indoor/outdoor installations and weather-resistant service in industrial environments. This DTU model provides a 3-pole, 3-wire disconnect with Type 3R rating and a high short-circuit current rating up to 200 kA at 600 V, making it suitable for motor control, service disconnects, and branch-disconnect points where reliable isolation is required. When integrating, verify mounting compatibility and enclosure fit for your application, and ensure the non-fusible, three-phase arrangement matches your protection and control scheme.