DB-1M distribution system is suitable for circuit of AC 50/60Hz，rated voltage up to AC 660V，rated current up to 125A Of distributing contron of modern building such as large office mansion，hotel，commerce department，industrial and mining enterprises and so on．It can protect electric appliance from overload voltage & current．It also can short and frequent switch ON/OFF under normal operating condition．It is one of the most reliable general distribution system in the world.  1 phase 4 lines．6 lines．8 lines，12 lines，and 3 phase 9 lines，12 lines，18 lines，24 lines，36 lines are available.