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 100A with voltage of 600 VAC and 600 VDC. It is rated when using time delay fuses of 60 HP at 480 VAC three phase, 100 HP at 600 VAC three phase and 50 HP at 600 VDC. This switch has a 3 wire configuration and is rated for 12 to 1/0 AWG aluminum wire and 14 to 1/0 AWG copper wire. This device has enclosure rating of NEMA 12. It has a height of 20.5 in, width of 10.5 in and has a depth of 7.5 in. This switch has a viewing window. It is UL listed with the file E2875.