Eaton SPD Type 2 CHSP Service Entrance Surge Protection. This 120/240V line, 150V L-N, 300V L-L MCOV, 700V L-N, 1200V L-L, 900V N-G, 700V L-G VPR, 22 KA SCCR, NEMA 4, single-phase, 60 Hz, 10 KA nominal current discharge, 60 KA surge current. It provides reliable protection for your home's electrical system against power surges.