Steel enclosure. 2 pole, 3 wire, 2 blades, 2 class H cartridge fuses (not included), solid neutral, 120/240 volt AC. Rated 1-1/2 to 3 HP single phase, 3 to 7-1/2 HP 3-phase at 240 volt only when dual element fuses are used. For residential and commercialapplications; suitable for light duty motor circuits and service entrance. For use on systems capable of delivering up to 10,000 RMS, symmetrical fault current. Bolt-on hub provided. No.DS100GK ground kit sold separately. 6-1/6 in x 7-1/2 in x 6-3/4 in UL Listed file No.E5239; meets UL98 for enclosed switches and NEMA standard KS1.