Square D™ Surgelogic™ Surge Protective Device, Series: SDSA, 600 VAC Electrical Rating, 50/60 Hz Frequency, 3 Pole, 3 Wires, 200 kA Short Circuit, 36 kA Peak Surge Current, 1020 VAC Clamping, 10 kA Nominal Discharge, Modes of Protection: L-L, LED Indicator, 3 ph, Environmental Conditions: 149 deg F Operating Temperature, NEMA 4X Enclosure, Nipple Mounting, Plastic, Black, 3.6 in W x 3.4 in D x 3.1 in H Dimensions