Surge protective device for 3 Phase AC power systems LAYBX100 380E is a class B SPD widely adopted in 3-phase 5-line low-voltage power systems(TN systems) for protection of equipment from surge and transient over-voltage caused by lightning induction or inside the power system environment with the following features.


- Large discharge current, high protection level, safety and reliability, easy maintenance;
Thermal protection and over current protection in each discharge unit;
- Flame retardant and moisture proof techniques adopted;
- Operation mode indicator (green at normal operation and red at fault)and remote signal alarm function
Lightning stroke counter for recording lightning stroke of surge events  with current over 2kA