- Large current capacity, low residual voltage, totally enclosed structure, no arc escape
- Build in multi gap, continuous voltage, strong ability of off flow current
- Assembly combination modules such as IP+N, 2P, 3P+N, etc
- Class I
LP 50A are applied at the low voltage side of transformer with rated working voltage 230/400V or zone between LPZO and LPZI, which can protect CLASS I against overvoltage arising from lightning or surge.