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3031432

Official Distributor

By Phoenix Contact

SKU
PHX3031432
MPN
STTB 4 BU
Weight
0.017 kg
This product is Not Cancellable/Not Returnable
Series STTB

STTB 4 BU - Double-level spring-cage terminal block

Double-level spring-cage terminal block, nom. voltage: 500 V, nominal current: 30 A, connection method: Spring-cage connection, 1st and 2nd level, Rated cross section: 4 mm2, cross section: 0.08 mm2 - 6 mm2, mounting type: NS 35/7,5, NS 35/15, color: blue

  • Compact design for maximum space savings
  • Connect the levels using FBS ...-PV bridges
  • Tested for railway applications
Technical Specifications

Product properties

Area of applicationRailway industry
Area of applicationMachine building
Area of applicationPlant engineering
Area of applicationProcess industry
Number of Connections4
Number of rows2

Insulation characteristics

Overvoltage categoryIII
Degree of pollution3

Electrical properties

Rated surge voltage6 kV
Maximum power dissipation for nominal condition1.02 W

Connection data

Number of connections per level2
Nominal cross section4 mm²

1st and 2nd level

Stripping length8 mm ... 10 mm
Connection in acc. with standardIEC 60947-7-1
Conductor cross section rigid0.08 mm² ... 6 mm²
Cross section AWG28 ... 10 (converted acc. to IEC)
Conductor cross section flexible0.08 mm² ... 4 mm²
Conductor cross section, flexible [AWG]28 ... 12 (converted acc. to IEC)
Conductor cross-section flexible (ferrule without plastic sleeve)0.14 mm² ... 4 mm²
Flexible conductor cross section (ferrule with plastic sleeve)0.14 mm² ... 4 mm²
2 conductors with the same cross section, flexible, with TWIN ferrule with plastic sleeve0.5 mm² ... 1 mm²
Nominal Current30 A
Maximum Load Current32 A (with 6 mm² conductor cross section)
Nominal Voltage500 V
Nominal cross section4 mm²

Rated data (ATEX/IECEx)

Identification II 2 GD  Ex eb IIC Gb
Operating temperature range-60 °C ... 110 °C
Ex-certified accessories3030462 D-STTB 4
Ex-certified accessories3030747 ATP-STTB 4
Ex-certified accessories1204517 SZF 1-0,6X3,5
Ex-certified accessories3022276 CLIPFIX 35-5
Ex-certified accessories3022218 CLIPFIX 35
List of bridgesPlug-in bridge / FBS 2-6 / 3030336
List of bridgesPlug-in bridge / FBS 3-6 / 3030242
List of bridgesPlug-in bridge / FBS 4-6 / 3030255
List of bridgesPlug-in bridge / FBS 5-6 / 3030349
List of bridgesPlug-in bridge / FBS 10-6 / 3030271
List of bridgesPlug-in bridge / FBS 20-6 / 3030365
Bridge data24 A / 4 mm²
Ex temperature increase40 K (29.5 A/4 mm²)
Rated voltage440 V
for bridging with bridge440 V
- At bridging between non-adjacent terminal blocks352 V
- At bridging between non-adjacent terminal blocks via PE terminal block352 V
- At cut-to-length bridging with cover220 V
- At cut-to-length bridging with partition plate220 V
Rated Insulation Voltage400 V
Output(Permanent)

Ex level General

Rated current26.5 A
Maximum Load Current30 A

Ex connection data General

Nominal cross section4 mm²
Rated cross section AWG12
Connection capacity rigid0.08 mm² ... 6 mm²
Connection capacity AWG28 ... 10
Connection capacity flexible0.08 mm² ... 4 mm²
Connection capacity AWG28 ... 12
Output(Permanent)

Ex level Level 1

Contact resistance0.94 mΩ
Output(Permanent)

Ex level Level 2

Contact resistance0.69 mΩ

Dimensions

Width6.2 mm
End cover width2.2 mm
Height83.5 mm
Depth on NS 35/7,547.5 mm
Depth on NS 35/1555 mm

Material specifications

Colorblue
Flammability rating according to UL 94V0
Insulating material groupI
Insulating materialPA
Static insulating material application in cold-60 °C
Temperature index of insulation material (DIN EN 60216-1 (VDE 0304-21))125 °C
Relative insulation material temperature index (Elec., UL 746 B)130 °C
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
Calorimetric heat release NFPA 130 (ASTM E 1354)27,5 MJ/kg
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

Mechanical data

Open side panelYes

Ambient conditions

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 %

Standards and Regulations

Connection in acc. with standardIEC 60947-7-1

Mounting

Mounting TypeNS 35/7,5
Mounting TypeNS 35/15
Accessories

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Additional Information
Pack Size50
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