SST40-275 Surge protective device SPD 1+NPE ,275V Imax 40kA ,In 20kA ClassII,type2
Complete unit consisting of module and base,pre-mounted and ready for connection
Suitable for TN and TT network systems
Plug-in module; the module can be separated from base without tools
With visual display window of defects
High current conductivity and long service life
