These Square D heavy duty safety switches are designed to provide exceptional electrical protection in the most grueling conditions. They have been designed to have a significantly higher durability than a standard switch and have a durability three times greater than NEMA standard. Some of the things that make these switches desirable is there reliability, life durability, ease to install and safety features. Due to this, these heavy duty switches are the ideal for your electrical disconnect and protection for all your commercial and industrial needs. This is a two pole fusible heavy duty safety switch that is rated at 400A with voltage of 600 VAC and VDC. It is rated when using time delay fuses of 250 HP at 480 VAC single phase, 50 HP at 600 VDC and 250 VDC. This switch has a 2 wire configuration and is rated for AWG 1/0 to 750 kcmil aluminum and copper wire. This device has enclosure rating of NEMA 3R and it is made of galvannealed steel. It has a height of 50.31 in, width of 27.88 in and has a depth of 10.13 in. It is UL listed with the file E2875.