MELTRIC DECONTACTOR Female Receptacle, Switch Rated, Series: DSN30, 255/277/440/480 V AC, 30 A, 10 hp, 60 Hz Frequency, 3 Pole, 4 Wires, NEMA 4X NEMA Rating, IP66/IP67/IP69K Enclosure, -40 to 140 deg F, Screw Terminal, Polyester, Blue, 2.87 in Dia x 3.2 in L Dimensions