RIB® Power Control Relay, Enclosed, 20 A, 2 hp at 277 VAC, 120/208 to 277 VAC, 24 VAC/VDC Coil, SPDT, 20 A at 277 VAC Contact, 1 Pins, Surface Mount, Screw Terminal, NEMA 1, -30 to 140 deg F, 2.3 in L x 3.2 in W x 1.8 in H