'Surge Protection Device, Phase 3, Voltage 480VAC Wye, Max. Continuing Operating Voltage 320/640VAC, Voltage Protection Rating 2500V (L-L), 1500V (L-N), Nominal Discharge Current 20kA, Modes of Protection L-L, L-N, Nonfiltering, Modular, Mounting Style DIN Rail, Enclosure Material Polyethylene Terephthalate, Length 3.61 In., Width 2.07 In., Depth 2.78 In., Max. Surge Current Per Phase 75kA, Max. Surge Current Per Mode 150kA, Short Circuit Current Rating 200kA, Number of Poles 3'