RIB® Pilot Control Relay, Enclosed, 10 A, 1/2 hp at 120/240 VAC Power, 24 VAC/VDC, 208 to 277 VAC Coil, DPDT Contact Form, 10 A at 277 VAC Contact, 1 Pin, Surface Mounting, Screw Terminal, NEMA 1 Enclosure, -30 to 140 deg F, 1.7 in L x 2.8 in W x 1.5 in H Dimensions