Product Data Sheet: DEHNbloc® DB 1 255 H (900 222) ■ Encapsulated creepage discharge spark gap without venting means ■ RADAX Flow spark gap technology with high follow current limitation ■ Can also be used upstream meter panels due to high insulation resistance Figure without obligation Basic circuit diagram DB 1 255 H Dimension drawing DB 1 255 H Single-pole and three-pole lightning current arrester with high follow current limitation. * Please contact DEHN for additional test results with specific rectifiers. Type Part No. SPD according to EN 61643-11 SPD according to IEC 61643-1/-11 DB 1 255 H 900 222 type 1 * class I * Nominal a.c. voltage (UN) 230 V Max. continuous operating a.c. voltage (UC) 255 V Lightning impulse current (10/350 µs) (Iimp) 50 kA 625.00 kJ/ohms ≤ 4 kV 50 kArms no tripping of a 32 A gL/gG fuse up to 50 kArms (prosp.) ≤ 100 ns Max. backup fuse up to IK = 50 kArms (ta ≤ 0.2 s) 500 A gL/gG Max. backup fuse up to IK = 50 kArms (ta ≤ 5 s) 315 A gL/gG Max. backup fuse for IK > 50 kArms 200 A gL/gG Max. backup fuse (L-L') 125 A gL/gG Temporary overvoltage (TOV) (UT) 335 V / 5 sec. withstand Operating temperature range (parallel connection) (TUP) -40 °C ... +80 °C Operating temperature range (series connection) (TUS) -40 °C ... +60 °C 1 Specific energy (W/R) Voltage protection level (UP) Follow current extinguishing capability a.c. (Ifi) Follow current limitation / Selectivity Response time (tA) TOV characteristic Number of ports Cross-sectional area (L, L', N/PEN, N'/PEN) (min.) 2 10 mm solid / flexible 2 2 35 mm stranded / 25 mm flexible 2 2 35 mm DIN rails acc. to EN 60715 Enclosure material thermoplastic, red, UL 94 V-0 Place of installation indoor installation Degree of protection IP 20 Capacity 2 module(s), DIN 43880 Approvals KEMA, VDE 331 g 85363030 4013364102521 1 pc(s) Cross-sectional area (L, N/PEN) (max.) 50 mm stranded / 35 mm flexible Cross-sectional area (L', N'/PEN) (max.) For mounting on Weight Customs tariff number GTIN PU We reserve the right to introduce changes in performance, configuration and technology, dimensions, weights and materials in the course of technical progress. The figures are shown without obligation. © DEHN + SÖHNE GmbH + Co. KG · Hans-Dehn-Str. 1 · Postfach 1640 · D-92306 Neumarkt · Tel. +499181 906-0 · www.dehn.de 3, te s ted : Tested +: New (: Discontinued Model