Iskra Zascite

SMH2-TC SeriesDATA/SIGNAL LINES PROTECTIONIEC category / EN type: C1/C2/C3 (IEC 61643-21)Design: Replaceable plug-in module 12 mmMode of protection:Longitudinal, TransverseCoarse Protection: 3 terminal GDTAvailable voltages: 5, 12, 15, 24, 30, 48, 60, 110V DCFreq: 30MHzSurge Discharge Ratings: I n:10kA 8/20µs, I max: 20kA 8/20µsLoad current: 1AEnclosure:DIN 43880 2/3TE, DIN rail mountTerminal:Multi-strand to 4mm 2Like the SMH-TC series, the SMH2-TC provides the same level of protection to two independent circuits (pairs). Anumber of protection voltages are available to ensure the user is able to select the closest clamping voltage to thenormal signal operation of the equipment being protected.The plug-in module/base design facilitates replacement of a failed module without the need to remove systemwiring.If the module is unplugged out of the base, the connection lines remain enabled.Technical characteristicsTypeProtection constructionNumber of protected pairsNominal operating voltageMax. continuous operating voltageRated spark overvoltageUnUc(a/b-PG)(a-b)Rated operating current at 25oCI LNominal discharge current (8/20µs) I nMax. discharge current (8/20µs) ImaxResidual voltage at 5 kA (8/20µs)Response timet AThermal protectionInsulation resistance of the protectionSerial resistance RTransverse capacitance CLimit frequency f GTerminal cross sectionOperating temperatureDegree of protectionHousing materialDimensions DIN 43880Mounting EN 60715Ordering code Base + Replaceable plug-in moduleReplaceable plug-in module5V5V DC6V DC8 - 10V8 - 10V1A10kA20kA< 22V< 1ns≥ 6KΩ1.6-2.0Ω50pF30MHz708 012708 00212V12V DC15V DC17 - 21V17 - 21V1A10kA20kA< 42V< 1ns≥ 15MΩ1.6-2.0Ω50pF30MHz708 013708 003SMH2-TC15V 24V 30V 48VTwo parts: base and extractable insert2 (4 conductors)15V DC18V DC21 - 25V21 - 25V1A10kA20kA< 48V< 1ns≥ 18MΩ1.6-2.0Ω50pF30MHz708 014708 00424V DC28V DC31 - 37V31 - 37V1A10kA20kA< 70V< 1ns30V DC33V DC36 - 44V36 - 44V1A10kA20kA< 80V< 1nson a 35mm DIN rail708 015 708 016708 005 708 00648V DC52V DC57 - 69V57 - 69V1A10kA20kA< 140V< 1nsThermo-clip≥ 28M Ω ≥ 33M Ω1.6-2.0Ω1.6-2.0Ω50pF 50pF30MHz 30MHzMulti-strand to 4 mm 2- 40oC ... + 80oCIP 20Thermoplastic; gray, extinguishing degree V-O12mm≥ 52M Ω1.6-2.0Ω50pF30MHz708 017708 00760V60V DC64V DC68 - 84V68 - 84V1A10kA20kA< 160V< 1ns≥ 64MΩ1.6-2.0Ω50pF30MHz708 018708 008110 V110V DC170V DC184 - 264V184 - 264V1A10kA20kA< 450V< 1ns≥ 170MΩ1.6-2.0Ω50pF30Mhz708 011708 001Dimensional drawingsConnection diagramGDTR85RGDTRdcRDBd’c’90Legend:GDTRDBgas discharge tuberesistordiode blockbaLINEa b c d d’ c’ b’ a’EQUIPb’a’12PG protective grounding PGPGwww.iskrazascite.si17