Optical status indicator

Surge voltage arrester, Low voltage, Single-phase, TN, TT, IT with N, IT without N

Surge voltage arrester, Low voltage, Single-phase, TN-S

Surge voltage arrester, Low voltage, TN-C

Surge voltage arrester, Low voltage, TN-C-S, TN-S, TT, IT with N, IT without N

Surge voltage arrester, Low voltage, TN-C-S, TN-S