LIGHTNING ARRESTER TYPE1, 12,5KA,LIGHTNING PROTECTION CLASS III AND IV,FOR 3-CONDUCTOR NETWORKS (L,N,PE), UC 335V/264V AC (L-N/N-PE), CONNECTOR FAULT DISPLAY
SURGE ARRESTER TYPE 2 REQUIREMENT CATEGORY C, UC 350V PLUG-IN PROTECTION BLOCKS 4POLE, 3+1 CIRCUIT FOR TN-S AND TT SYSTEMS W. REMOTE DISPLAY,NARROW DESIGN
SURGE ARRESTER TYPE 2 REQUIREMENT CAT. C,UC 580V AC PROTECTION BLOCKS PLUGGABLE 3POLES, 3+0 CIRCUIT FOR IT SYSTEMS WITHOUT N CONDUCTOR COMMUNICATION CONTACT