General 

YCS6 B series Surge Protection Device is suitable for TT, IT, TN-S, TN-C and TN-C-S, the power supply system with the rated voltage up to 230/4 00V and AC 50/60Hz. Its design corresponds to IEC61643 1, GB18802.1 and GB50057. The product is usually installed in the incoming line low voltage distribution box of the building, and it can release 100kA lightning stroke current.