The Square D by Schneider Electric brand Double Throw Safety Switch is designed to be tough, reliable and provide exceptional performance in the most grueling conditions. Double throw safety switches are designed for Residential, light commercial, and industrial installations. Double throw safety switches transfer a load from one power source to another power source. 30A-100A F Series safety switches provide significantly higher levels of mechanical endurance than NEMA KS-1 or UL98 standards require and switches can be field-converted to transfer a power source from one load to another. These switches come in fusible or non-fusible configurations and can be padlocked in the ON-OFF positions. This Double Throw Safety Switch has a rated current of 100A. This switch has an operational voltage rating of 240VAC & 250VDC. This switch is surface mounted. The enclosure has a NEMA 3R rating and is made of galvannealed steel with no neutral installed. This Double Throw Safety Switch will accept wire gauges of AWG 12/AWG 1/0(Al), & AWG 14/AWG 1/0(Cu). This product comes with an 18 month warranty.