EP CS TT 275 - Leutron GmbH

Surge ProtectionEnerPro C S pluggableEP C S TT 275 (/FM)EP C S TT1+1 275 (/FM)Pluggable combined multi-pole Surge Protective Devicemeeting the requirements of protection category T2 (C), class IIsurge protection in multi-pole TT- Power Net SystemsEP C S TT 275 EP C S TT1+1 275• Category T2 Surge Protective Device (SPD)• Multi-pole complete device with socket and plugged-in protection modules• Can be co-ordinated with an upstream installed T1 lightning current SPD• High discharge capacity thanks to high-performance varistors (MOV)• Failure indicator display by change of colour• Potential-free SPDT remote contact (optional) for function controlProduct descriptionLeutron surge protectors series EP C S … are single block SPD’s with pluggable modules usuallyinstalled in the sub-distribution panel.EP C S TT 275(/FM) is a four-pole surge protector for TT-Power Net Systems, connected in the socalled 3+1 circuit.EP C S TT1+1 275(/FM) is a two-pole surge protector for TT-Power Net Systems, connected in theso called 1+1 circuit.These devices serve as surge protectors at the supply end of electrical equipment and systems.They are fitted with a thermal protective NC-contact which opens if the varistor exceed a certainlevel of temperature due to overload by too high leakage current. In that case, the failure indicatorchanges from green or yellow to red and the optional remote signal change-over contact switchesover.There is an optional potential-free remote signal contact (/FM) inside the housing. The wireconnection is made by a pluggable screw terminal block.The protective circuit is installed in an easy-to-handle compact socket for 35mm DIN rail mounting(EN 50022) with multifunctional screw terminals for wire and bus-bar connection.Protects People and Valuables

Technical Data:Type Art. No.: RemarksEP C S TT 275EP C S TT 275/FMEP C S TT1+1 275EP C S TT1+1 275/FMEP C S 275SP C S 255381 040381 045381 024381 025381 242381 244for three phases and neutral (3+1)with remote signal contactfor one phase and neutral (1+1)with remote signal contactPluggable protection L – N module for replacement, without socketPluggable protection PE - N module for replacement, without socketProtection category acc. toE DIN VDE 0675-6 11/98-A1 and EN 61643-11resp. IEC 61643-1L - NT2 (C) class IINominal power supply voltage 50/60 Hz U N [V] 230 / 400Rated voltage (max. continuous operating voltage) 50/60 Hz U C [V] 275 255Max. permissible line resp. backup fuse I [A] 100 A gL/gGVoltage protection level at 5kA (8/20 µs) U P [kV] ≤ 1.0Voltage protection level at i sn (8/20 µs) U P [kV] ≤ 1.4 ≤ 1,5Response time t A [ns] < 25 < 100PE – NNominal discharge current i sn [kA] 20 (8/20 µs) 12 (10/350 µs)Max. discharge current (8/20 µs) I max [kA 40 40Short-circuit withstand capability at max. permissible pre-fuse, 50Hz [kA] 25kAOperating temperature range t [°C] -40 … +80Max. wire cross-sectional area [mm²] 50 stranded / 35 flexibleRecommended wire cross-sectional area [mm²] 25Recommended connection torque [Nm] 4,5Max. cross-sectional area for remote signal contact [mm²] 1,5Max. switching capacity of remote signal contact(change over (SPDT) contact[V/A] AC 250 V 0,5 A / DC 250V 0,1AAmbient protection category (IEC/EN 60529) IP 20Material of housing / colourPolyamide PA 6 30SV, UL94 V0 / yellowMounting on DIN rail 35mm (DIN / EN 50022)Dimensions in mm / DiagramDimension acc. DIN 43880EP C S TT (3+1 modules)EP C S TT (1+1 modules)EP C S TT275, EP C S TT1+1 27529.11.2007_pdf© 2007 by Leutron GmbHSubject to technical modifications and deliverypossibilitiesLeutron GmbHOvervoltage ProtectionHumboldtstrasse 30-32D-70771 Leinfelden-EchterdingenGermanyPhone +49 711 / 9 47 71-0Fax +49 711 / 9 47 71-70Email: info@leutron.deWeb: www.leutron.de