TY6-12.5M 1 +1/3+1 is suitable for TT system.
SPD classification according to EN61643-11        Type 1+2
SPD classification according to IEC61643-11        Class II
Max. continuous operating a.c. voltage (L-N)    Uc    275V
Max. continuous operating a.c. voltage (N-PE)    Uc    255V
Lightning impulse current (10/350 m s)    limp    12.5kA
Norminal discharge current (8/20 卩 s)    In    20kA
Max. discharge current (8/20 卩 s) (L-N)    Imax    50kA
Max. discharge current (8/20 卩 s) (N-PE)    Imax    80kA
Voltage protection level    Up    Wl.3kV
Voltage protection level 5kA    Up    Wl.lkV
Max. backup fuse        160AgL
Response time    tA    W25ns
Operating temperature range    Tu    -40°C_80P
Operating state/fault indication        green/red
Cross-section area (Min.)        6 mm2
Cross-section area(Max.)        35mm2
For mounting on        35mm Standard guide railDin rail
Enclosure material        Thermoplastic Thermalplastic UL94-V0