SolaHD Surge Protective Device, Series: STV 25K, 120 VAC Electrical Rating, 47 to 63 Hz Frequency, 2 Wires, 5 kA Short Circuit, 25 kA Peak Surge Current, 3 kA Nominal Discharge, Modes of Protection: L-N/L-L/L-G/N-G, <0.5 ns Response, LED Indicator, 1 ph, Environmental Conditions: -40 to 60 deg C Temperature/0 to 95% Non-Condensing Humidity, IP20 Enclosure, Flanged Mounting, Screw Terminal, Metal, 4.87 in H x 2.56 in W x 4.75 in D Dimensions