Eaton SPD Type 2 CHSP Service Entrance Surge Protection, 120/240V line, 150V L-N, 300V L-L MCOV, 600V L-N, 1000V L-L, 800V N-G, 600V L-G VPR, 22 kA SCCR, NEMA 4, Single-phase, 60 Hz, 20 kA nominal current discharge, 108 kA surge current Short Circuit Current Rating: 22000 kA Phase: 1 ph Type: Type 2 Service Entrance Series: CHSPT Electrical Ratings: 120/240 V, 50 A Frequency Rating: 60 Hz Number Of Poles: 2 Number of Wires: 4 Peak Surge Current: 108 kA Nominal Discharge Current: 20 kA Modes of Protection: 150V L-N/300V L-L MCOV/600V L-N/1000V L-L/800V N-G/600V L-G VPR Indicator Type: LED Environmental Conditions: -40 to 50 deg C Operating Temperature Enclosure Type: NEMA 4 Mounting Type: Surface/Panel Terminal Type: Quick-Connect Material: Plastic Dimensions: 7 x 5 x 2-1/2 in