The Square D by Schneider Electric brand Heavy Duty Safety Switch is designed to be tough, reliable and provide exceptional performance in the most grueling conditions. This fusible disconnect has a short circuit rating of either 10kA or 200kA depending on fuses used. This device is rated at 400 amps, three poles, 350 horse power, with a voltage of 600 VAC and 600 VDC. This device is Type 3R rated with a galvannealed steel enclosure.