GW4-15 w outdoor high voltage isolator (copper)
GW4-15/20W Indoor, outside the high voltage isolation switch
GW4GW4-15/20 w type copper platoon three pillar outdoor high voltage isolator.
GW4-12 w copper platoon type of outdoor high voltage isolator.
GW4-12 double head type of outdoor high voltage isolator
12 kv insulated parts series
