Safety Switch, Amps 100 A, Voltage 240V AC, Circuit Breaker Type QO, Main Circuit Breaker or Main Lug Main Lug, Phase Single, Height 3.5 in, Width 1.5 in, Depth 2 91/100 in, For Use With Circuit breaker QO 2P, Short Circuit Current Rating 10 kA, Enclosure NEMA Rating 3R, Color Gray, Enclosure Material Galvanized Steel, Enclosure Surface Finish Enamel, Indoor/Outdoor, Standards CSA Certified, UL 98, UL Listed