Siemens TPS3A1110D 120/240-Volt 100kA Per Phase Level 2 Whole House Surge Protective Device UL 1449 3rd Ed. Listed with 700V VPRs for L-N, L-G, and N-G. TPS3A1110D carries a 200kA SCCR Designed to connect and protect 120/240-Volt single or (split-phase) panels Per phase surge current capacity = 100,000-Amp, with EMI/RFI filtering L-N, L-G, N-G and L-L modes of protection Siemens TPS3A1110D protection indication assurance achieved through-LEDs, audible alarm