Leviton, 420MI7WLEV, Non-Fused Mechanical Interlock, Pin and Sleeve, Series: LEV, 480 VAC, 20 A, 3 Pole, 4 Wires, 1-1/4, 2 in Hub, Wall Mounting, Wire Connection, NEMA 3R/4X/12/IP66/IP67/IP68/IP69/IP69K Enclosure, -40 to 75 deg C Operating, Nickel-Plated Brass/Chloroprene/ PBT+PC with TPE Overmold/Stainless Steel, Red, 11.42 in H x 8.86 in W x 8.29 in D Dimensions