ST 2,5 Feed-through Terminal Block 3031212 | Spring-cage Connection - LinQ How

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Phoenix Contact · Spring-cage connection

ST 2,5

Order No: 3031212

Feed-through terminal block, nom. voltage: 800 V, nominal current: 24 A, number of connections: 2, number of positions: 1, connection method: Spring-cage connection, Rated cross section: 2.5 mm2, cross section: 0.08 mm2 - 4 mm2, mounting type: NS 35/7,5, NS 35/15, color: gray

Product Type Feed-through Terminal Block
Positions / Connections 1 Position / 2 Connections
Cross Section 2.5 mm² (0.08 – 4 mm²)
Connection Method Spring-cage Connection
Rated Current / Voltage 24 A / 800 V
Mounting NS 35/7,5 · NS 35/15
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Engineering Value

Your Advantages with Phoenix Contact ST 2,5

Standard Industrial 19-inch Architecture
✓

Simple wiring of very small, flexible conductors

✓

Enables one-handed wiring

✓

No restriction on cross-sections when using conductors with ferrules

✓

Reliable vibration resistance thanks to spring-loaded contact elements

✓

Vibration-resistant and maintenance-free conductor connection

✓

Full flexibility thanks to the standardized CLIPLINE complete bridging, marking, and testing accessories

Technical Data Reference Sheets

Comprehensive Technical Specifications

Generated from the official online catalog for Phoenix Contact Order Number 3031212.

01

Product properties

Core classification, family, and application areas

7 Parameters
Product type
Feed-through terminal block
Product family
ST
Area of application
Railway industry
Machine building
Plant engineering
Process industry
Number of positions
1
Number of connections
2
Number of rows
1
Potentials
1
02

Insulation characteristics

Insulation coordination ratings

2 Parameters
Overvoltage category
III
Degree of pollution
3
03

Electrical properties

Surge voltage and power dissipation

2 Parameters
Rated surge voltage
8 kV
Maximum power dissipation for nominal condition
0.77 W
04

Connection data

Spring-cage connection capacity and ratings

19 Parameters
Number of connections per level
2
Nominal cross section
2.5 mm²
Connection method
Spring-cage connection
Stripping length
8 mm ... 10 mm
Internal cylindrical gage
A3
Connection in acc. with standard
IEC 60947-7-1
Conductor cross-section rigid
0.08 mm² ... 4 mm²
Cross section AWG
28 ... 12 (converted acc. to IEC)
Conductor cross-section flexible
0.08 mm² ... 2.5 mm²
Conductor cross-section, flexible [AWG]
28 ... 14 (converted acc. to IEC)
Conductor cross-section flexible ultrasound-compressed
0.34 mm² ... 4 mm²
Conductor cross-section, flexible [AWG] ultrasound-compressed
22 ... 12 (converted acc. to IEC)
Conductor cross-section flexible (ferrule without plastic sleeve)
0.14 mm² ... 2.5 mm²
Flexible conductor cross-section (ferrule with plastic sleeve)
0.14 mm² ... 2.5 mm²
2 conductors with the same cross section, flexible, with TWIN ferrule with plastic sleeve
0.5 mm²
Nominal cross section
2.5 mm²
Nominal current
24 A (at 2.5 mm²)
Maximum load current
31 A (with 4 mm² conductor cross-section)
Nominal voltage
800 V
05

Ex data – Rated data (ATEX/IECEx)

Explosion protection ratings and certified accessories

18 Parameters
Identification
II 2 GD Ex eb IIC Gb
Operating temperature range
-60 °C ... 85 °C
Ex-certified accessories
3030417 D-ST 2,5
3030721 ATP-ST 4
1204517 SZF 1-0,6X3,5
3022276 CLIPFIX 35-5
3022218 CLIPFIX 35
List of bridges
Plug-in bridge / FBS 2-5 / 3030161
Plug-in bridge / FBS 3-5 / 3030174
Plug-in bridge / FBS 4-5 / 3030187
Plug-in bridge / FBS 5-5 / 3030190
Plug-in bridge / FBS 10-5 / 3030213
Plug-in bridge / FBS 20-5 / 3030226
Bridge data
23 A (2.5 mm²)
Ex temperature increase
40 K (22.8 A / 2.5 mm²)
for bridging with bridge
550 V
At bridging between non-adjacent terminal blocks
352 V
At bridging between non-adjacent terminal blocks via PE terminal block
352 V
At cut-to-length bridging with cover
220 V
At cut-to-length bridging with partition plate
275 V
Rated insulation voltage
500 V
output
(Permanent)
Ex level
General
Rated voltage
550 V
Rated current
20.5 A
Maximum load current
26.5 A
Contact resistance
1.04 mΩ
06

Ex connection data

Connection capacity under Ex conditions (General)

6 Parameters
Nominal cross section
2.5 mm²
Rated cross section AWG
14
Connection capacity rigid
0.08 mm² ... 4 mm²
Connection capacity AWG
28 ... 12
Connection capacity flexible
0.08 mm² ... 2.5 mm²
Connection capacity AWG
28 ... 14
07

Dimensions

Block dimensions and mounting depth

5 Parameters
Width
5.2 mm
End cover width
2.2 mm
Height
48.5 mm
Depth on NS 35/7,5
36.5 mm
Depth on NS 35/15
44 mm
08

Material specifications

Insulating material and fire protection data

13 Parameters
Color
gray (RAL 7042)
Flammability rating according to UL 94
V0
Insulating material group
I
Insulating material
PA
Static insulating material application in cold
-60 °C
Relative insulation material temperature index (Elec., UL 746 B)
130 °C
Fire protection for rail vehicles (DIN EN 45545-2) R22
HL 1 - HL 3
Fire protection for rail vehicles (DIN EN 45545-2) R23
HL 1 - HL 3
Fire protection for rail vehicles (DIN EN 45545-2) R24
HL 1 - HL 3
Fire protection for rail vehicles (DIN EN 45545-2) R26
HL 1 - HL 3
Surface flammability NFPA 130 (ASTM E 162)
passed
Specific optical density of smoke NFPA 130 (ASTM E 662)
passed
Smoke gas toxicity NFPA 130 (SMP 800C)
passed
09

Electrical tests

Dielectric and current withstand test results

8 Parameters
Surge voltage test
Test voltage setpoint
9.8 kV
Result
Test passed
Temperature-rise test
Requirement temperature-rise test
Increase in temperature ≤ 45 K
Result
Test passed
Short-time withstand current 2.5 mm²
0.3 kA
Result
Test passed
Power-frequency withstand voltage
Test voltage setpoint
2 kV
Result
Test passed
10

Mechanical properties

Mechanical data and strength tests

4 Parameters
Mechanical data
Open side panel
Yes
Mechanical strength
Result
Test passed
Attachment on the carrier
DIN rail/fixing support
NS 35
Result
Test passed
11

Test for conductor damage and slackening

Conductor retention test per IEC 60947-7-1

4 Parameters
Rotation speed
9 rpm
Revolutions
135
Conductor cross-section/weight
0.14 mm² / 0.2 kg
2.5 mm² / 0.7 kg
4 mm² / 0.9 kg
Result
Test passed
12

Environmental and real-life conditions

Aging, flame, vibration, and shock tests

19 Parameters
Aging
Temperature cycles
192
Result
Test passed
Needle-flame test
Time of exposure
30 s
Result
Test passed
Oscillation/broadband noise
Specification
DIN EN 50155 (VDE 0115-200):2018-05
Spectrum
Long life test category 2, bogie-mounted
Frequency
f1 = 5 Hz to f2 = 250 Hz
ASD level
6.12 (m/s²)²/Hz
Acceleration
3.12g
Test duration per axis
5 h
Test directions
X-, Y- and Z-axis
Result
Test passed
Shocks
Specification
DIN EN 50155 (VDE 0115-200):2008-03
Pulse shape
Half-sine
Acceleration
5g
Shock duration
30 ms
Number of shocks per direction
3
Test directions
X-, Y- and Z-axis (pos. and neg.)
Result
Test passed
13

Ambient conditions

Operating and storage environment limits

6 Parameters
Ambient temperature (operation)
-60 °C ... 110 °C (Operating temperature range incl. self-heating; for max. short-term operating temperature, see RTI Elec.)
Ambient temperature (storage/transport)
-25 °C ... 60 °C (for a short time, not exceeding 24 h, -60 °C to +70 °C)
Ambient temperature (assembly)
-5 °C ... 70 °C
Ambient temperature (actuation)
-5 °C ... 70 °C
Permissible humidity (operation)
20 % ... 90 %
Permissible humidity (storage/transport)
30 % ... 70 %
14

Standards and regulations

Applicable connection standard

1 Parameters
Connection in acc. with standard
IEC 60947-7-1
15

Mounting

DIN rail mounting types

1 Parameters
Mounting type
NS 35/7,5
NS 35/15
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