Proax
Currency
0 Items
Products
Manufacturers
Expertise
About UsBlogQuick OrderContact UsClearance
proax logo
Cart
Phoenix Contact 3031720
AllConnectorsTerminal blocksSpring-cage connection
Phoenix ContactOfficial Distributor

By Phoenix Contact

SKU
MPN
STS 2,5-TWIN
Weight
0.007 kg
This product is Not Cancellable/Not Returnable
Series STS

STS 2,5-TWIN - Feed-through terminal block

Feed-through terminal block, nom. voltage: 800 V, nominal current: 24 A, number of connections: 3, connection method: Spring-cage connection, 1 level, Rated cross section: 2.5 mm2, cross section: 0.08 mm2 - 4 mm2, mounting type: NS 35/7,5, NS 35/15, color: gray

  • Same shape and pitch as the feed-through terminal blocks
  • Cross connection to adjacent feed-through terminal blocks with the consistent FBS ... plug-in bridge system
Technical Specifications

General

Number of rows1
Number of Connections3
Potentials1
Nominal cross section2.5 mm²
Colorgray
Insulating materialPA
Flammability rating according to UL 94V0
Mounting TypeNS 35/7,5
Rated surge voltage8 kV
Degree of pollution3
Overvoltage categoryIII
Insulating material groupI
Maximum power dissipation for nominal condition0.77 W
Maximum Load Current28 A (in case of a 4 mm² conductor cross section, the maximum load current must not be exceeded by the total current of all connected conductors.)
Nominal current IN24 A (with 4 mm² conductor cross section)
Nominal voltage UN800 V
Open side panelYes
Shock protection test specificationDIN EN 50274 (VDE 0660-514):2002-11
Back of the hand protectionguaranteed
Finger protectionguaranteed
Result of surge voltage testTest passed
Result of power-frequency withstand voltage testTest passed
Power frequency withstand voltage setpoint2 kV
Bending test conductor cross section/weight0.08 mm² / 0.1 kg
Bending test conductor cross section/weight2.5 mm² / 0.7 kg
Bending test conductor cross section/weight4 mm² / 0.9 kg
Requirement temperature-rise testIncrease in temperature ≤ 45 K
Conductor cross section short circuit testing2.5 mm²
Short-time current0.3 kA
Conductor cross section short circuit testing4 mm²
Short-time current0.48 kA
Oscillation, broadband noise test resultTest passed
Test specification, oscillation, broadband noiseDIN EN 50155 (VDE 0115-200):2008-03
Test spectrumService life test category 2, bogie-mounted
Test frequencyf1 = 5 Hz to f2 = 250 Hz
ASD level6.12 (m/s²)²/Hz
Acceleration3.12g
Test duration per axis5 h
Test directionsX-, Y- and Z-axis
Shock test resultTest passed
Test specification, shock testDIN EN 50155 (VDE 0115-200):2008-03
Shock formHalf-sine
Acceleration30g
Shock duration18 ms
Number of shocks per direction3
Test directionsX-, Y- and Z-axis (pos. and neg.)
Relative insulation material temperature index (Elec., UL 746 B)130 °C
Temperature index of insulation material (DIN EN 60216-1 (VDE 0304-21))125 °C
Static insulating material application in cold-60 °C
Surface flammability NFPA 130 (ASTM E 162)passed
Specific optical density of smoke NFPA 130 (ASTM E 662)passed
Calorimetric heat release NFPA 130 (ASTM E 1354)27,5 MJ/kg
Smoke gas toxicity NFPA 130 (SMP 800C)passed
Fire protection for rail vehicles (DIN EN 45545-2) R22HL 1 - HL 3
Fire protection for rail vehicles (DIN EN 45545-2) R23HL 1 - HL 3
Fire protection for rail vehicles (DIN EN 45545-2) R24HL 1 - HL 3
Fire protection for rail vehicles (DIN EN 45545-2) R26HL 1 - HL 3

Dimensions

Width5.2 mm
End cover width2.2 mm
Length50.8 mm
Height NS 35/7,543 mm
Height NS 35/1550.5 mm

Connection data

Connection1 level
Connection MethodSpring-cage connection
Stripping length8 mm ... 10 mm
Connection in acc. with standardIEC 60947-7-1
Conductor cross section solid min.0.08 mm²
Conductor cross section solid max.4 mm²
Conductor cross section AWG min.28
Conductor cross section AWG max.12
Conductor cross section flexible min.0.08 mm²
Conductor cross section flexible max.2.5 mm²
Min. AWG conductor cross section, flexible28
Max. AWG conductor cross section, flexible14
Conductor cross section flexible, with ferrule without plastic sleeve min.0.14 mm²
Conductor cross section flexible, with ferrule without plastic sleeve max.2.5 mm²
Conductor cross section flexible, with ferrule with plastic sleeve min.0.14 mm²
Conductor cross section flexible, with ferrule with plastic sleeve max.2.5 mm²
Two conductors with the same cross section, flexible, with TWIN ferrules, with plastic sleeve, maximum0.5 mm²
Connection in acc. with standardIEC/EN 60079-7
Conductor cross section solid min.0.08 mm²
Conductor cross section solid max.4 mm²
Conductor cross section AWG min.28
Conductor cross section AWG max.12
Conductor cross section flexible min.0.08 mm²
Conductor cross section flexible max.2.5 mm²
Internal cylindrical gageA3

Ambient conditions

Operating Temperature-60 °C ... 105 °C (max. short-term operating temperature RTI Elec.)
Ambient temperature (storage/transport)-25 °C ... 60 °C (for a short time, not exceeding 24 h, -60 °C to +70 °C)
Permissible humidity (storage/transport)30 % ... 70 %
Ambient temperature (assembly)-5 °C ... 70 °C
Ambient temperature (actuation)-5 °C ... 70 °C

Standards and Regulations

Connection in acc. with standardIEC 60947-7-1
Connection in acc. with standardIEC/EN 60079-7

Environmental Product Compliance

China RoHSEnvironmentally friendly use period: unlimited = EFUP-e
China RoHSNo hazardous substances above threshold values
Accessories
  • Phoenix Contact3031762
    3031762
    D-STS 2,5 - End cover, depth: 43 mm, width: 2.2 mm, height: 51 mm, color: gray
  • Phoenix Contact3030941
    3030941
    WST 2,5 - Warning cover, 5-pos., for terminal width: 5.2 mm
  • Phoenix Contact1204517
    1204517
    Screwdriver - SZF 1-0,6X3,5
  • Phoenix Contact3039900
    3039900
    ST-IL - Operating decal for the ST terminal block
  • Phoenix Contact1207608
    1207608
    Actuation tool - ST-BW
  • Phoenix Contact3062757
    3062757
    CEC 2,5 - Cover for conductor shaft, 10-pos., for spring cage terminal blocks (ST) and terminal blocks with push-in technology (PT) with a width of 5.2 mm
  • Phoenix Contact3032447
    3032447
    P-CO 2-5 R47K - Component connector, with 47 kOhm resistance for wire-break monitoring, pitch: 5.2 mm, depth: 34.8 mm, width: 4.1 mm, height: 8.9 mm, number of positions: 2, color: black
  • Phoenix Contact3061282
    3061282
    BST 2,5 - Cover for actuation shaft, 5-pos., for spring-cage terminal blocks with width of 5.2 mm
  • Phoenix Contact3030172
    3030172
    Wire bridge - FBSW 2-5/250MM
  • Phoenix Contact3030170
    3030170
    Wire bridge - FBSW 2-5/60MM
  • Phoenix Contact3030171
    3030171
    Wire bridge - FBSW 2-5/110MM
  • Phoenix Contact3030172
    3030172
    Wire bridge - FBSW 2-5/250MM
  • Phoenix Contact3030170
    3030170
    Wire bridge - FBSW 2-5/60MM
  • Phoenix Contact3030171
    3030171
    Wire bridge - FBSW 2-5/110MM
  • Phoenix Contact3030161
    3030161
    FBS 2-5 - Plug-in bridge, pitch: 5.2 mm, number of positions: 2, length: 23 mm, color: red
  • Phoenix Contact3030174
    3030174
    FBS 3-5 - Plug-in bridge, pitch: 5.2 mm, number of positions: 3, length: 23 mm, color: red
  • Phoenix Contact3030187
    3030187
    FBS 4-5 - Plug-in bridge, pitch: 5.2 mm, number of positions: 4, length: 23 mm, color: red
  • Phoenix Contact3030190
    3030190
    FBS 5-5 - Plug-in bridge, pitch: 5.2 mm, number of positions: 5, length: 23 mm, color: red
  • Phoenix Contact3030213
    3030213
    FBS 10-5 - Plug-in bridge, pitch: 5.2 mm, number of positions: 10, length: 23 mm, color: red
  • Phoenix Contact3030226
    3030226
    FBS 20-5 - Plug-in bridge, pitch: 5.2 mm, number of positions: 20, color: red
  • Phoenix Contact3038930
    3038930
    FBS 50-5 - Plug-in bridge, pitch: 5.2 mm, number of positions: 50, color: red
  • Phoenix Contact3033702
    3033702
    FBSR 2-5 - Plug-in bridge, pitch: 5.2 mm, number of positions: 2, color: red
  • Phoenix Contact3001591
    3001591
    FBSR 3-5 - Plug-in bridge, pitch: 5.2 mm, number of positions: 3, color: red
  • Phoenix Contact3001592
    3001592
    FBSR 4-5 - Plug-in bridge, pitch: 5.2 mm, number of positions: 4, color: red
  • Phoenix Contact3001593
    3001593
    FBSR 5-5 - Plug-in bridge, pitch: 5.2 mm, number of positions: 5, color: red
  • Phoenix Contact3033710
    3033710
    FBSR 10-5 - Plug-in bridge, pitch: 5.2 mm, number of positions: 10, color: red
  • Phoenix Contact3036877
    3036877
    FBS 2-5 BU - Plug-in bridge, pitch: 5.2 mm, number of positions: 2, color: blue
  • Phoenix Contact3036880
    3036880
    FBS 3-5 BU - Plug-in bridge, pitch: 5.2 mm, number of positions: 3, color: blue
  • Phoenix Contact3036893
    3036893
    FBS 4-5 BU - Plug-in bridge, pitch: 5.2 mm, number of positions: 4, color: blue
  • Phoenix Contact3036903
    3036903
    FBS 5-5 BU - Plug-in bridge, pitch: 5.2 mm, number of positions: 5, color: blue
  • Phoenix Contact3036916
    3036916
    FBS 10-5 BU - Plug-in bridge, pitch: 5.2 mm, number of positions: 10, color: blue
  • Phoenix Contact3036929
    3036929
    FBS 20-5 BU - Plug-in bridge, pitch: 5.2 mm, number of positions: 20, color: blue
  • Phoenix Contact3032114
    3032114
    FBS 50-5 BU - Plug-in bridge, pitch: 5.2 mm, number of positions: 50, color: blue
  • Phoenix Contact0801733
    0801733
    NS 35/ 7,5 PERF 2000MM - DIN rail perforated, Pack of 25 (50 m), acc. to EN 60715, material: Steel, galvanized, passivated with a thick layer, Standard profile, color: silver
  • Phoenix Contact0801681
    0801681
    NS 35/ 7,5 UNPERF 2000MM - DIN rail, unperforated, Pack of 25 (50 m), acc. to EN 60715, material: Steel, galvanized, passivated with a thick layer, Standard profile, color: silver
  • Phoenix Contact1204119
    1204119
    NS 35/ 7,5 WH PERF 2000MM - DIN rail perforated, Pack of 25 (50 m), acc. to EN 60715, material: Steel, Galvanized, white passivated, Standard profile, color: silver
  • Phoenix Contact1204122
    1204122
    NS 35/ 7,5 WH UNPERF 2000MM-VPE 10 - DIN rail, unperforated, Pack of 10 (20 m), acc. to EN 60715, material: Steel, Galvanized, white passivated, Standard profile, color: silver
  • Phoenix Contact0801704
    0801704
    NS 35/ 7,5 AL UNPERF 2000MM - DIN rail, unperforated, Pack of 25 (50 m), acc. to EN 60715, material: Aluminum, uncoated, Standard profile, color: silver
  • Phoenix Contact1206421
    1206421
    DIN rail perforated, Pack of 25 (50 m), acc. to EN 60715, material: Steel, galvanized, Standard profile, color: silver
  • Phoenix Contact1206434
    1206434
    NS 35/ 7,5 ZN UNPERF 2000MM - DIN rail, unperforated, Pack of 25 (50 m), acc. to EN 60715, material: Steel, galvanized, Standard profile, color: silver
  • Phoenix Contact0801762
    0801762
    NS 35/ 7,5 CU UNPERF 2000MM-VPE 10 - DIN rail, unperforated, Pack of 10 (20 m), acc. to EN 60715, material: Copper, uncoated, Standard profile, color: copper-colored
  • Phoenix Contact1206560
    1206560
    NS 35/ 7,5 CAP - DIN rail end piece, for DIN rail NS 35/7.5
  • Phoenix Contact1050004
    1050004
    Zack marker strip - ZB 5 :UNBEDRUCKT
  • Phoenix Contact1050017
    1050017
    1050017 -
  • Phoenix Contact1050020
    1050020
    Zack marker strip - ZB 5,QR:FORTL.ZAHLEN
  • Phoenix Contact1050033
    1050033
    Zack marker strip - ZB 5,LGS:GLEICHE ZAHLEN
  • Phoenix Contact1050415
    1050415
    Zack marker strip - ZB 5,LGS:L1-N,PE
  • Phoenix Contact0818108
    0818108
    Marker for terminal blocks - UC-TM 5
  • Phoenix Contact0824581
    0824581
    Marker for terminal blocks - UC-TM 5 CUS
  • Phoenix Contact0828734
    0828734
    Marker for terminal blocks - UCT-TM 5
  • Phoenix Contact0808642
    0808642
    Zack Marker strip, flat - ZBF 5:UNBEDRUCKT
  • Phoenix Contact0810821
    0810821
    0810821 -
  • Phoenix Contact0810863
    0810863
    Zack Marker strip, flat - ZBF 5,LGS:UNGERADE ZAHLEN
  • Phoenix Contact0818153
    0818153
    Marker for terminal blocks - UC-TMF 5
  • Phoenix Contact0824638
    0824638
    Marker for terminal blocks - UC-TMF 5 CUS
  • Phoenix Contact0828744
    0828744
    Marker for terminal blocks - UCT-TMF 5
  • Phoenix Contact3002843
    3002843
    ISH 2,5/0,2 - Insulating sleeve, color: white
  • Phoenix Contact3002856
    3002856
    ISH 2,5/0,5 - Insulating sleeve, color: gray
  • Phoenix Contact3002869
    3002869
    ISH 2,5/1,0 - Insulating sleeve, color: black
  • Phoenix Contact3035975
    3035975
    4 mm test adapter, for terminal blocks with 5.2 mm and 6.2 mm pitch
  • Phoenix Contact3035974
    3035974
    Test adapter - PAI-4-FIX-5/6 OG
  • Phoenix Contact3035977
    3035977
    Test adapter - PAI-4-FIX-5/6 YE
  • Phoenix Contact3035976
    3035976
    Test adapter - PAI-4-FIX-5/6 RD
  • Phoenix Contact3035978
    3035978
    Test adapter - PAI-4-FIX-5/6 GN
  • Phoenix Contact3035980
    3035980
    Test adapter - PAI-4-FIX-5/6 BK
  • Phoenix Contact3035982
    3035982
    Test adapter - PAI-4-FIX-5/6 GY
  • Phoenix Contact3035979
    3035979
    Test adapter - PAI-4-FIX-5/6 VT
  • Phoenix Contact3035981
    3035981
    Test adapter - PAI-4-FIX-5/6 BN
  • Phoenix Contact3035983
    3035983
    Test adapter - PAI-4-FIX-5/6 WH
  • Phoenix Contact3030983
    3030983
    Test plugs - PS-5
  • Phoenix Contact3036725
    3036725
    DP PS-5 - Spacer plate, depth: 29 mm, width: 5.2 mm, height: 22.4 mm, number of positions: 1, color: red
  • Phoenix Contact3038723
    3038723
    Test plugs - PS-5/2,3MM RD
  • Phoenix Contact1201662
    1201662
    E/AL-NS 35 - End clamp, for end support of UKH 50 to UKH 240, is pushed onto DIN rail NS 35 and fixed with 2 screws, width: 10 mm, color: aluminum

Why Proax for Phoenix Contact 3031720?

Proax is an authorized distributor of Phoenix Contact 3031720 and one of Phoenix Contact's largest distributors in North America. Our highly skilled in-house technical team is ready to assist with any technical needs.

Have a question in mind? to help you get the right product as quickly as possible for your project. We're always here to help!

Short Lead Time
Highly Trained Staff
Live Chat
Technical Support
Local Inventory
60+ Years Experience
Additional Information
Pack Size50
Recommended
  • Phoenix Contact3031733
    3031733
    STS 2,5-TWIN-PE - Ground terminal, number of connections: 3, connection method: Spring-cage connection, 1 level, cross section: 0.08 mm2 - 4 mm2, mounting type: NS 35/7,5, NS 35/15, color: green-yellow
  • Phoenix Contact3036275
    3036275
    Feed-through terminal block - STS 2,5-TWIN BU
  • Phoenix Contact3037504
    3037504
    STS 2,5-TWIN OG - Feed-through terminal block, nom. voltage: 800 V, nominal current: 24 A, number of connections: 3, connection method: Spring-cage connection, 1 level, Rated cross section: 2.5 mm2, cross section: 0.08 mm2 - 4 mm2, mounting type: NS 35/7,5, NS 35/15, color: orange
  • Phoenix Contact3037517
    3037517
    Feed-through terminal block - STS 2,5-TWIN RD
  • Phoenix Contact3037009
    3037009
    STS 2,5-TG - Disconnect terminal block, Current and voltage are determined by the plug used., nom. voltage: 400 V, nominal current: 20 A, 1 level, connection method: Spring-cage connection, Rated cross section: 2.5 mm2, cross section: 0.08 mm2 - 4 mm2, mounting: NS 35/7,5, NS 35/15, color: gray
  • Phoenix Contact3031746
    3031746
    STS 2,5-QUATTRO - Feed-through terminal block, nom. voltage: 800 V, nominal current: 24 A, number of connections: 4, connection method: Spring-cage connection, 1 level, Rated cross section: 2.5 mm2, cross section: 0.08 mm2 - 4 mm2, mounting type: NS 35/7,5, NS 35/15, color: gray
  • Phoenix Contact3031759
    3031759
    STS 2,5-QUATTRO-PE - Ground terminal, number of connections: 4, connection method: Spring-cage connection, 1 level, cross section: 0.08 mm2 - 4 mm2, mounting type: NS 35/7,5, NS 35/15, color: green-yellow
  • Phoenix Contact3036288
    3036288
    Feed-through terminal block - STS 2,5-QUATTRO BU
  • Phoenix Contact3037575
    3037575
    STS 2,5-QUATTRO OG - Feed-through terminal block, nom. voltage: 800 V, nominal current: 24 A, number of connections: 4, connection method: Spring-cage connection, 1 level, Rated cross section: 2.5 mm2, cross section: 0.08 mm2 - 4 mm2, mounting type: NS 35/7,5, NS 35/15, color: orange
  • Phoenix Contact3037562
    3037562
    Feed-through terminal block - STS 2,5-QUATTRO RD
  • Phoenix Contact3036990
    3036990
    STS 2,5-MT - Knife-disconnect terminal block, nom. voltage: 400 V, nominal current: 20 A, 1 level, connection method: Spring-cage connection, Rated cross section: 2.5 mm2, cross section: 0.08 mm2 - 4 mm2, mounting: NS 35/7,5, NS 35/15, color: gray
  • Phoenix Contact3036411
    3036411
    STS 2,5-PE - Spring cage ground terminal block, number of connections: 2, connection method: Spring-cage connection, 1 level, cross section: 0.08 mm2 - 4 mm2, mounting type: NS 35/7,5, NS 35/15, color: green-yellow
  • Phoenix Contact3035425
    3035425
    STS 2,5-MT BU - Knife-disconnect terminal block, nom. voltage: 400 V, nominal current: 20 A, 1 level, connection method: Spring-cage connection, Rated cross section: 2.5 mm2, cross section: 0.08 mm2 - 4 mm2, mounting: NS 35/7,5, NS 35/15, color: blue
  • Phoenix Contact3037601
    3037601
    STS 2,5 RD - Feed-through terminal block, nom. voltage: 800 V, nominal current: 24 A, number of connections: 2, connection method: Spring-cage connection, 1 level, Rated cross section: 2.5 mm2, cross section: 0.08 mm2 - 4 mm2, mounting type: NS 35/7,5, NS 35/15, color: red
  • Phoenix Contact3037478
    3037478
    STS 2,5 OG - Feed-through terminal block, nom. voltage: 800 V, nominal current: 24 A, number of connections: 2, connection method: Spring-cage connection, 1 level, Rated cross section: 2.5 mm2, cross section: 0.08 mm2 - 4 mm2, mounting type: NS 35/7,5, NS 35/15, color: orange
  • Phoenix Contact3036408
    3036408
    STS 2,5 BU - Feed-through terminal block, nom. voltage: 800 V, nominal current: 24 A, number of connections: 2, connection method: Spring-cage connection, 1 level, Rated cross section: 2.5 mm2, cross section: 0.08 mm2 - 4 mm2, mounting type: NS 35/7,5, NS 35/15, color: blue
  • Phoenix Contact3036398
    3036398
    STS 2,5 - Feed-through terminal block, nom. voltage: 800 V, nominal current: 24 A, number of connections: 2, connection method: Spring-cage connection, 1 level, Rated cross section: 2.5 mm2, cross section: 0.08 mm2 - 4 mm2, mounting type: NS 35/7,5, NS 35/15, color: gray
Sold in quantities of 50

Not in stock

Request lead time or order—we'll ensure quick delivery

Phoenix Contact Availability