MELTRIC DECONTACTOR Female Receptacle, Switch Rated, Series: DSN20, 255/277/440/480 V AC, 20 A, 5 hp, 60 Hz Frequency, 4 Pole, 5 Wires, NEMA 4X NEMA Rating, IP66/IP67/IP69K Enclosure, -40 to 140 deg F, Screw Terminal, Polyester, Blue, 2.24 in Dia x 3.05 in L Dimensions