Y/55 porm 25 degrees f operating temp, 95 porm 5 degrees f low temp sensing, 0 to25000 ft altitude, 115/200 v dc, 3 phase, 400 hz, 17 kva, 28 vdc12 amps max, 7.120 in. Lg excl connectors, 6.000 in. W, 4.060in. H, 4 mounting holes 0.210 to 0.220 in. Dia