Yes, The surge arrester must be protected upstream by a disconnection circuit breaker.
The surge arrester is not intended to be exposed to a permanent overvoltage (phase/neutral inversion, or neutral rupture).
In this case, it would be short-circuited and may damage the switchboard.
A disconnection circuit breaker protecting the surge arrester against short circuits is therefore required to ensure the safety of the electrical installation.
The surge arrester is not intended to be exposed to a permanent overvoltage (phase/neutral inversion, or neutral rupture).
In this case, it would be short-circuited and may damage the switchboard.
A disconnection circuit breaker protecting the surge arrester against short circuits is therefore required to ensure the safety of the electrical installation.
Released for:Schneider Electric Thailand
