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 three pole fusible heavy duty safety switch that is rated at 800A with voltage of 240 VAC and 250 VDC. It is rated when using time delay fuses of 250 HP at 240 VAC three phase and 50 HP at 250 VDC. This switch has a 4 wire configuration and is rated for AWG 3/0 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 69.13 in, width of 36.62 in and has a depth of 17.75 in. This switch has factory installed neutral. It is UL listed with the file E2875.