Hubbell Wiring Device-Kellems, HBL430MI9W, Pin and Sleeve Mechanical Interlock, 3-Phase Female Grounding Non-NEMA Standard UnFusible Watertight Pressure Screw Terminal, 240 V AC, 30 A, 7500 W Power, 3 Pole, 4 Wires, 1 in Hub, NEMA 4X/12K/IP67 Enclosure, Threaded Mounting, Thermoplastic, Blue, 8-3/4 in L x 7-3/4 in W x 11-1/2 in H Dimensions