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. F Series safety switches provide significantly higher levels of mechanical endurance than NEMA KS-1 or UL98 standards require. All heavy duty safety switches feature a quick-make, quick-break operating mechanism, a dual cover interlock and a color-coded indicator handle. This Single Throw Safety Switch has a rated current of 400A and is UL listed with a NEMA 3R rating of protection. This switch has operational voltage ratings of 240VAC & 250VDC. The enclosure is made of galvannealed steel and has a neutral (factory installed). This fusible disconnect has a short circuit current rating of 10kA to 200kA. This safety switch accepts H,J,K,L,Rfuse types and is surface mounted. This switch comes with an 18 months warranty.