| Item Description | Lightning current arrester with coarse and fine surge protection for four 1-CORE signalling lines, installation at the line entry into building and also installation close to protected device / 48 V DC, max. 1 A, replacement module, line separated from protective earth via GDT / D1, C2 EN 61643-21+A1, A2:2013, IEC 61643-21+A1, A2:2012 / pluggable module, coupling impedance (r - resistance), line separated from protective earth via GDT, lightning current arrester with coarse and fine surge protection for four 1-CORE signalling lines, installation at the boundary of LPZ 0 and LPZ 1 zones or higher, at the line entry into building and also installation close to protected device, for protection of communication inter- faces of i&c, mar systems, electronic security and fire detection systems, etc. (Mainly for RS-485 interfaces) against impact of surge voltage, coarse and fine surge protection |