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Low-voltage surge arrester / type 1 / DIN rail - 12.5 kA | DGM
The DGM is a compact (two-pole) Type 1 AC Surge Protection Device (SPD) dedicated to be connectedat the entrance of the electrical installation. Particularly useful in a high lightning density area, this SPD is designed to provide an efficient protection for sensitive equipment against over voltage due to lightning effects or industrial interferences.
The DGM is a single-phase SPD and can be also used for 3-phase N AC networks protection (made of 2 DGM).
Protection is based on high energy varistors diagram which is able to channel currents of up to 100 kA to
earth without incurring damage. According to the latest issue of IEC 62 305 and IEC 60 364 standards,
it is compulsory to install those surge arresters on the incoming power supply if the building is fitted
with external lightning protection system. Multiple stage protection can be achieved using DGM
surge arresters at the network entrance combined with DGT or DGX surge
arresters positioned as close as possible to sensitive equipments.