Type 1 surge arrester PP BCD TNS 25/100-350 series

type 2type 3for lighting

This combined four-pole SPD type PP BCD TNS 25/100 -350 and PP BCD TNS 25/100 /FM-350, with remote signal contacts, offer a co mplete solution for the protection of TNS-Power Net Systems. They are usually installed in main- or sub-distribut ion panel or before the equi pment to be protected. Thanks to the use of the patented, hermetically s ealed gas-filled isolating s park-gaps (inert gas) this SPD allows you to achieve a high-level discharge c apacity without needing blow- out vents. This saves you from keeping the safety distance to adjoining electrical components usually necessary to avoid unwanted electric arcs and fire hazardous. As there is no risk of leakage currents, this SPD c an also be installed before the electric power meter (acc. to TAB2000, installation rules of the Union of Germany Electric Works). This device is capable to dischar ge lightning current surges of 25 kA (10/350 μs) per phase and total 100 kA (10/350 μs) as well as self-extinguish main s upply follow-on currents and limiting up to 4 kA. The protective circuit is installed in an eas y-to-handle compact housing with snap-on clips for 35 mm DIN rail mounting, with multifunctional scr ew terminals for wire and bus-bar connections. Installation can be carried out either by wiring via the multifunctional scr ew connection terminal (terminal L1 ́, L2 ́, L3 ́, and N ́ ) or else as serial wiring via the optional two-pole bus -bar connection (L1 to L1 ́ and so on). There is an optional potential-fr ee remote signal contact (/FM) inside the housing. The wire connection is made via a pluggable screw terminal block.