Description
BU3 Series Surge Protective Device (hereinafter referred to as SPD) is suitable for surge protection in low-voltage power distribution systems with AC 50 / 60 Hz and rated operational voltage of 230 / 400 V. It meets SPD Class I test requirements, with a peak impulse current up to 25 kA (10/350 μs).
Installed in lightning protection zones LPZ0B / LPZ1, it suppresses direct lightning strokes, induced lightning and other transient overvoltages, and diverts surge energy, so as to protect system circuits and load equipment.
