d200mDITEK D200M-1202401 Modular Surge Protective Device, 200kAPhase, Protects 120240VAC Split Phase Panels. D200M-1202401 | DK-200M1201. Product Documents and Resources.DITEK D200M-2774803YT ZEUS Series Surge Protection Module, 277480V. D200M-2774803YT | DK-D200M2774. Product Documents and Resources. Product Data Sheet.