https://www.phoenixcontact.com/us/produkte/2858881 Surge protection device - TT-ST-2/2-24DC - 2858881 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) Spring cage modular terminal block with integrated surge protection, for assembly on NS 35/7.5, voltage U<sub>N</sub> 24 V DC, terminal width: 6.2 mm, cover width: 2.2 mm Why buy this product Multi-stage modular terminal blocks with spring-cage connection Disconnection of signal circuits by disconnect knife Key commercial data Packing unit 1 Minimum order quantity 1 Catalog page Page 109 (TT-2011) GTIN Custom tariff number 85363030 Country of origin GERMANY Technical data General Housing material PA 6.6 Inflammability class according to UL 94 V2 Color black Standards for air and creepage distances EN 60664-1 Standards for air and creepage distances IEC 60664-1 Surge voltage category III Pollution degree 2 Total surge current (8/20) s 10 kA Total surge current (10/350) s 2 kA Ambient temperature (operation) -40 C ... 85 C Mounting type DIN rail: 35 mm Design Double-level terminal block Number of positions 2 Degree of protection IP20 04.10.2012 Page 1 / 6 https://www.phoenixcontact.com/us/produkte/2858881 Surge protection device - TT-ST-2/2-24DC - 2858881 Technical data General Direction of action Line-Earth Ground Width 6.2 mm Height 100 mm Depth 63.5 mm Protective circuit IEC category C1 IEC category C2 IEC category C3 IEC category D1 VDE requirement class C1 VDE requirement class C2 VDE requirement class C3 VDE requirement class D1 Nominal voltage UN 24 V DC Maximum continuous operating voltage UC 30 V DC Maximum continuous operating voltage UC 21 V AC Maximum continuous voltage UC (wire-ground) 30 V DC Maximum continuous voltage UC (wire-ground) 21 V AC Nominal current IN 300 mA (45C) Operating effective current IC at UC 10 A (per path) Ground conductor current IPE 20 A Nominal discharge surge current In (8/20) s (Core-Earth) 5 kA Total surge current (8/20) s 10 kA Max. discharge surge current Imax (8/20) s maximum (CoreEarth) 5 kA Nominal pulse current Ian (10/1000) s (Core-Earth) 100 A Nominal pulse current Ian (10/1000) s (Core-Earth) 200 A (in total) Lightning test current (10/350) s, peak value limp 1 kA (per path) Output voltage limitation at 1 kV/s (Core-Earth) spike 40 V Output voltage limitation at 1 kV/s (Core-Earth) static 40 V Residual voltage at In, (conductor-ground) 40 V Residual voltage with Ian (10/1000)s (conductor-ground) 45 V Protection level UP (Core-Earth) 80 V (C2 (10 kV/5 kA)) Protection level UP (Core-Earth) 40 V (static) Response time tA (Core-Earth) 1 ns Input attenuation aE, asym. Typ. 0.6 dB (500 kHz/50 system) Input attenuation aE, asym. Typ. 0.1 dB (170 kHz/150 system) Input attenuation aE, asym. Typ. 0.1 dB (40 kHz/600 system) Cut-off frequency fg (3 dB), asym. (PE) in 50 Ohm system Typ. 3 MHz Cut-off frequency fg (3 dB), asym. (PE) in 150 Ohm system Typ. 1 MHz Cut-off frequency fg (3 dB), asym. (PE) in 600 Ohm system Typ. 250 kHz Capacity (Core-Earth) 2 nF Resistance in series 9.4 10 % (per path) 04.10.2012 Page 2 / 6 https://www.phoenixcontact.com/us/produkte/2858881 Surge protection device - TT-ST-2/2-24DC - 2858881 Technical data Protective circuit Resistance in series 9.4 Message: Surge protection fault None Max. required back-up fuse 315 mA 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) D1 (1 kA) Surge carrying capacity in acc. with IEC 61643-21 (Core-Earth) C3 (100 A) Connection data Connection method Spring-cage connection Connection type IN Spring-cage Connection type OUT Spring-cage 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 12 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 04.10.2012 Page 3 / 6 https://www.phoenixcontact.com/us/produkte/2858881 Surge protection device - TT-ST-2/2-24DC - 2858881 Approvals Approvals GOST / GOST / UL Listed Ex Approvals Approvals submitted Approval details GOST GOST UL Listed Accessories Accessories Marking Marker pen - B-STIFT - 1051993 Marker pen, for manual labeling of unprinted Zack strips, smear-proof and waterproof, line thickness 0.5 mm 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 04.10.2012 Page 4 / 6 https://www.phoenixcontact.com/us/produkte/2858881 Surge protection device - TT-ST-2/2-24DC - 2858881 Accessories 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 End cover - TT-D-STTCO-BK - 2858894 End cover for TERMITRAB TT-ST-..., width: 2.2 mm, color: Black Additional products End cover - TT-D-STTCO-BK - 2858894 End cover for TERMITRAB TT-ST-..., width: 2.2 mm, color: Black Shield connection - SSA 3-6 - 2839295 shield fast connections for conductor diameter 3 - 6 mm. Potential connection cable: 200 mm, black 04.10.2012 Page 5 / 6 https://www.phoenixcontact.com/us/produkte/2858881 Surge protection device - TT-ST-2/2-24DC - 2858881 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 Circuit diagram 1 100 OUT 65,1 IN 71 3 6,2 2 4 (c) Phoenix Contact 2012 - all rights reserved http://www.phoenixcontact.com 04.10.2012 Page 6 / 6