https://www.phoenixcontact.com/us/produkte/2838173 Surge protection device - TT-2/2-24DC - 2838173 Please be informed that the data shown in this PDF Document is generated from our Online Catalog. Please find the complete data in the user's documentation. Our General Terms of Use for Downloads are valid (http://download.phoenixcontact.com) Modular terminal block with three-stage surge protection for two signal wires with common reference potential, separate ground connection, nominal voltage: 24 V DC, for mounting on NS 35/7.5, terminal width: 6.2 mm, terminal height: 54.6 mm Why buy this product Versions with and without disconnect knife Protection of two signal wires with common reference potential Multi-stage modular terminal blocks with screw connection technology Disconnection of signal circuits by disconnect knife Key commercial data Packing unit 1 Minimum order quantity 10 Catalog page Page 107 (TT-2011) GTIN Custom tariff number 85363010 Country of origin GERMANY Technical data General Housing material PA 6.6 Inflammability class according to UL 94 V0 Color black Standards for air and creepage distances IEC 60664-1 Total surge current (8/20) s 10 kA Ambient temperature (operation) -40 C ... 85 C Mounting type DIN rail: 35 mm Design Double-level terminal block with PE foot - separate PE connection Number of positions 2 Degree of protection IP20 Direction of action Line-Earth Ground Width 6.2 mm 05.10.2012 Page 1 / 6 https://www.phoenixcontact.com/us/produkte/2838173 Surge protection device - TT-2/2-24DC - 2838173 Technical data General Height 79.6 mm Depth 54.6 mm Protective circuit IEC category C1 IEC category C2 IEC category C3 IEC category D1 Nominal voltage UN 24 V DC Maximum continuous operating voltage UC 30 V DC Maximum continuous voltage UC (wire-ground) 30 V DC Nominal current IN 300 mA (40C) Operating effective current IC at UC 10 A (per path) Ground conductor current IPE 10 A (per path) Nominal discharge surge current In (8/20) s (Core-Earth) 5 kA Total surge current (8/20) s 10 kA Nominal pulse current Ian (10/1000) s (Core-Earth) 100 A Lightning test current (10/350) s, peak value limp 500 A Output voltage limitation at 1 kV/s (Core-Earth) spike 50 V Protection level UP (Core-Earth) 90 V (C2 - 10 kV / 5 kA) Protection level UP (Core-Earth) 55 V (C1 - 1 kV/500 A) Protection level UP (Core-Earth) 45 V (C3 - 10 A) Protection level UP (Core-Earth) 50 V (C3 - 100 A) Protection level UP (Core-Earth) 130 V (D1 - 500 A) Response time tA (Core-Earth) 1 ns Input attenuation aE, asym. 0.4 dB ( 200 kHz / 50 ) Input attenuation aE, asym. 0.1 dB ( 30 kHz/150 ) Cut-off frequency fg (3 dB), asym. (PE) in 50 Ohm system Typ. 1.5 MHz Cut-off frequency fg (3 dB), asym. (PE) in 150 Ohm system Typ. 550 kHz Capacity (Core-Core) 4 nF Resistance in series 6.6 20 % Resistance in series 6.6 Message: Surge protection fault None Max. required back-up fuse 315 mA (T/IEC 60127-2/3) Surge carrying capacity in acc. with IEC 61643-21 (Core-Earth) C1 (1 kV / 500 A) Surge carrying capacity in acc. with IEC 61643-21 (Core-Earth) C2 (10 kV/5 kA) Surge carrying capacity in acc. with IEC 61643-21 (Core-Earth) C3 (100 A) Surge carrying capacity in acc. with IEC 61643-21 (Core-Earth) D1 (500 A) Alternating current carrying capacity in acc. with IEC 61643-21 (Core-Earth) 0.5 A/1 s Connection data Connection method Screw connection Connection type IN Screw terminal blocks 05.10.2012 Page 2 / 6 https://www.phoenixcontact.com/us/produkte/2838173 Surge protection device - TT-2/2-24DC - 2838173 Technical data Connection data Connection type OUT Screw terminal blocks Screw thread M3 Tightening torque 0.8 Nm Stripping length 8 mm Conductor cross section stranded min. 0.2 mm Conductor cross section stranded max. 2.5 mm Conductor cross section solid min. 0.2 mm Conductor cross section solid max. 4 mm Conductor cross section AWG/kcmil min. 24 Conductor cross section AWG/kcmil max 14 Classifications eclass eCl@ss 4.0 27140201 eCl@ss 4.1 27130801 eCl@ss 5.0 27130801 eCl@ss 5.1 27130801 eCl@ss 6.0 27130807 eCl@ss 7.0 27130807 etim ETIM 2.0 EC000943 ETIM 3.0 EC000943 ETIM 4.0 EC000943 unspsc UNSPSC 6.01 30212010 UNSPSC 7.0901 39121610 UNSPSC 11 39121610 UNSPSC 12.01 39121610 UNSPSC 13.2 39121620 Approvals Approvals Approvals UL Recognized / GOST / GOST / GL / UL Listed Ex Approvals UL Listed / cUL Listed / cULus Recognized 05.10.2012 Page 3 / 6 https://www.phoenixcontact.com/us/produkte/2838173 Surge protection device - TT-2/2-24DC - 2838173 Approvals Approvals submitted Approval details UL Recognized GOST GOST GL UL Listed Accessories Accessories Assembly End cover - D-DEK 1,5 BK - 2838995 Cover for setting the end of a TERMITRAB TT-2-PE... and TT-2/2 row of terminal blocks, color: black Marking Marker pen - B-STIFT - 1051993 Marker pen, for manual labeling of unprinted Zack strips, smear-proof and waterproof, line thickness 0.5 mm 05.10.2012 Page 4 / 6 https://www.phoenixcontact.com/us/produkte/2838173 Surge protection device - TT-2/2-24DC - 2838173 Accessories Zack Marker strip, flat - ZBF 6:UNBEDRUCKT - 0808710 Zack Marker strip, flat, Strip, white, Unlabeled, Can be labeled with: Plotter, Mounting type: Snap into flat marker groove, For terminal block width: 6.2 mm, Lettering field: 5.15 x 6.15 mm Zack Marker strip, flat - ZBF 6/WH-100:UNBEDRUCKT - 0808736 Zack Marker strip, flat, Strip, white, Unlabeled, Can be labeled with: Plotter, Mounting type: Snap into flat marker groove, For terminal block width: 6.2 mm, Lettering field: 5.15 x 6.15 mm Zack Marker strip, flat - ZBF 6,LGS:FORTL.ZAHLEN - 0808749 Zack Marker strip, flat, Strip, white, Labeled, Printed horizontally: Consecutive numbers 1 - 10, 11 - 20, etc. up to 91 - 100, Mounting type: Snap into flat marker groove, For terminal block width: 6.2 mm, Lettering field: 5.15 x 6.15 mm Additional products End cover - D-DEK 1,5 BK - 2838995 Cover for setting the end of a TERMITRAB TT-2-PE... and TT-2/2 row of terminal blocks, color: black Shield connection - SSA 3-6 - 2839295 shield fast connections for conductor diameter 3 - 6 mm. Potential connection cable: 200 mm, black 05.10.2012 Page 5 / 6 https://www.phoenixcontact.com/us/produkte/2838173 Surge protection device - TT-2/2-24DC - 2838173 Accessories Shield connection - SSA 5-10 - 2839512 Shield fast connection for conductor diameters 5 - 10 mm. Potential connection cable: 200 mm, black Drawings Dimensioned drawing 6,2 Circuit diagram 79,6 1 3 OUT 54,6 IN 2 4 Schematic diagram (c) Phoenix Contact 2012 - all rights reserved http://www.phoenixcontact.com 05.10.2012 Page 6 / 6