Phoenix UTTB 4 Double-level terminal block RD

300 In stock
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Double-level terminal block with screw connection, cross section: 0.14 mm2 - 6 mm2, AWG: 26 - 10, width: 6.2 mm, color: red
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Product properties
Product typeMulti-level terminal block
Number of connections4
Number of rows2
Insulation characteristics
Overvoltage categoryIII
Degree of pollution3
Electrical properties
Rated surge voltage8 kV
Maximum power dissipation for nominal condition1.02 W
Connection data
Number of connections per level2
Nominal cross section4 mm²
Level 1+2
Screw threadM3
Tightening torque0.6 ... 0.8 Nm
Stripping length9 mm
Internal cylindrical gageA4
Conductor cross section solid0.14 mm² ... 6 mm²
Cross section AWG26 ... 10
Conductor cross section flexible0.14 mm² ... 6 mm²
Conductor cross section, flexible [AWG]26 ... 10
Flexible conductor cross section flexible (ferrule, w/o plastic sleeve)0.14 mm² ... 4 mm²
Flexible conductor cross section (ferrule with plastic sleeve)0.14 mm² ... 4 mm²
2 conductors with same cross section, solid0.14 mm² ... 1.5 mm²
2 conductors with same cross section, flexible0.14 mm² ... 1.5 mm²
2 conductors with same cross section, flexible, with ferrule without plastic sleeve0.14 mm² ... 1.5 mm²
2 conductors with the same cross section, flexible, with TWIN ferrule with plastic sleeve0.5 mm² ... 2.5 mm²
Nominal current30 A
Maximum load current36 A (with 6 mm² conductor cross section)
Nominal voltage800 V
Nominal cross section4 mm²
Ex data
Rated data (ATEX/IECEx)
ATEX certificateKEMA 06 ATEX 0017 U
IEC Ex certificateIECEx  KEM 06.0013 U
Identification II 2 GD  Ex eb IIC Gb
Operating temperature range-60 °C ... 110 °C
Ex-certified accessories3047293 D-UTTB 2,5/4
3047303 DP-UTTB 2,5/4
3047316 ATP-UTTB 2,5/4
1212587 SF-SL 0,6X3,5-100 S-VDE
3022276 CLIPFIX 35-5
3022218 CLIPFIX 35
Bridge data25.5 A / 4 mm²
Ex temperature increase40 K (28.5 A / 4 mm²)
Rated voltage400 V
for bridging with bridge440 V
- At bridging between non-adjacent terminal blocks275 V
- At bridging between non-adjacent terminal blocks via PE terminal block275 V
- At cut-to-length bridging with cover220 V
- At cut-to-length bridging with partition plate176 V
Rated insulation voltage400 V
Ex level General
Rated current25.5 A
Maximum load current31.5 A
Ex connection data General
Torque range0.6 Nm ... 0.8 Nm
Nominal cross section4 mm²
Rated cross section AWG12
Connection capacity rigid0.14 mm² ... 6 mm²
Connection capacity AWG26 ... 10
Connection capacity flexible0.14 mm² ... 4 mm²
Connection capacity AWG26 ... 12
2 conductors with same cross section, solid0.14 mm² ... 1.5 mm²
2 conductors with the same cross-section AWG rigid26 ... 16
2 conductors with same cross section, stranded0.14 mm² ... 1.5 mm²
2 conductors with the same cross-section AWG flexible26 ... 16
Ex level Level 1
Contact resistance0.35 mΩ
Ex level Level 2
Contact resistance0.2 mΩ
Width6.2 mm
End cover width2.2 mm
Height NS 35/1572.5 mm
Height NS 35/7,565 mm
Length69.9 mm
Material specifications
Flammability rating according to UL 94V0
Insulating material groupI
Insulating materialPA
Static insulating material application in cold-60 °C
Relative insulation material temperature index (Elec., UL 746 B)125 °C
Electrical tests
Surge voltage test
ResultTest passed
Temperature-rise test
Requirement temperature-rise testIncrease in temperature ≤ 45 K
ResultTest passed
Test passed
Short-time withstand current 4 mm²0.48 kA
ResultTest passed
Power-frequency withstand voltage
Test voltage setpoint2 kV
ResultTest passed
Mechanical properties
Mechanical data
Open side panelYes
Mechanical tests
Mechanical strength
ResultTest passed
Attachment on the carrier
DIN rail/fixing supportNS 35
Test force setpoint1 N
ResultTest passed
Test for conductor damage and slackening
Rotation speed10 rpm
Conductor cross section/weight0.14 mm² / 0.2 kg
4 mm² / 0.9 kg
6 mm² / 1.4 kg
ResultTest passed
Environmental and real-life conditions
Temperature cycles192
Needle-flame test
Time of exposure30 s
ResultTest passed
Oscillation/broadband noise
SpecificationDIN EN 50155 (VDE 0115-200):2018-05
SpectrumService life test category 2, bogie-mounted
Frequencyf1 = 5 Hz to f2 = 250 Hz
ASD level6.12 (m/s²)²/Hz
Test duration per axis5 h
Test directionsX-, Y- and Z-axis
SpecificationDIN EN 50155 (VDE 0115-200):2008-03
Pulse shapeHalf-sine
Shock duration18 ms
Number of shocks per direction3
Test directionsX-, Y- and Z-axis (pos. and neg.)
ResultTest passed
Ambient conditions
Ambient temperature (operation)-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)
Ambient temperature (assembly)-5 °C ... 70 °C
Ambient temperature (actuation)-5 °C ... 70 °C
Permissible humidity (storage/transport)30 % ... 70 %
Standards and regulations
Connection in acc. with standardIEC 60947-7-1
Mounting typeNS 35/7,5
NS 35/15


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