Square D QMB361TW is a panel-mounted fusible safety switch designed for providing reliable circuit protection and isolation in industrial three-phase power systems. It features a 600V AC voltage rating and a 30A current rating, housed in a robust NEMA Type 1 enclosure with dimensions of 152 mm H x 143.26 mm W x 136.65 mm D and a weight of 17.811 lb. The switch is certified to NEMA KS1 standards and offers a high interrupting capacity of 200kA at 480V AC for enhanced safety. Its dual/twin configuration with three poles makes it suitable for motor control and feeder circuit applications where secure disconnection and Class R, H, or K fuse protection are required.