Square D™ Surgelogic™ Surge Protection Module, SPD Type 2, Series: IMA, 480Y/277 VAC, 47 to 63 Hz, 4 Wires, 200 kA Short Circuit Current, <240 kA Peak Surge, 320 VAC Clamping, 20 kA Nominal Discharge, Modes of Protection: L-N/L-G/N-G, LED Indicator, 3 ph, Environmental Conditions: 149 deg F Operating Temperature, NEMA 2, Panel Mount, Plastic, Black, 3.26 in W x 2.69 in D x 6.25 in H