MOV type, single and three phase. 120 to 480VAC, 60-100 Hz. All mode protection, L-G, L-N, N-G, L-L. Surge current rating 100 KA per mode. Enclosure safety bonding lug. AAR binding post terminals. Insulating shields optional (see photo, typical L terminal). Series or T connection for unlimited load current. Metal enclosure 3” high; mounting base 2.5” X 6.5” with two mounting holes 0.265” D on 5.75” center (for standard mounting means).