Selling Points
- 1High Current Rating: Supports up to 24A and 28A maximum load current.
- 2ATEX Certification: Suitable for hazardous areas with ATEX certification.
- 3Double-Level Design: Two function shafts per level for quick distribution tasks.
- 4Wide Cable Range: Compatible with 0.14 mm² to 4 mm² cable CSA.
- 5Durable Construction: Made from high-strength copper alloys for long-lasting performance.
Technical Specifications
Detailed engineering parameters based on manufacturer documentation
| Parameter | Value | Parameter | Value |
|---|---|---|---|
Product type | Multi-level terminal block | Product family | UTTB |
Area of application | Railway industry
Machine building
Plant engineering
Process industry | Number of connections | 4 |
Number of rows | 2 | Potentials | 2 |
Article revision | 17 | Overvoltage category | III |
Degree of pollution | 3 | Rated surge voltage | 6 kV |
Maximum power dissipation for nominal condition | 0.77 W | Number of connections per level | 2 |
Nominal cross section | 2.5 mm² | Screw thread | M3 |
Tightening torque | 0.5 ... 0.6 Nm | Stripping length | 9 mm |
Internal cylindrical gage | A3 | Connection in acc. with standard | IEC 60947-7-1 |
Conductor cross section rigid | 0.14 mm² ... 4 mm² | Cross section AWG | 26 ... 12 (converted acc. to IEC) |
Conductor cross section flexible | 0.14 mm² ... 4 mm² | Conductor cross section, flexible [AWG] | 26 ... 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 same cross section, solid | 0.14 mm² ... 1.5 mm² | 2 conductors with same cross section, flexible | 0.14 mm² ... 1.5 mm² |
2 conductors with same cross section, flexible, with ferrule without plastic sleeve | 0.14 mm² ... 1.5 mm² | 2 conductors with the same cross section, flexible, with TWIN ferrule with plastic sleeve | 0.5 mm² ... 1.5 mm² |
Nominal current | 24 A | Maximum load current | 28 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 voltage | 500 V | Nominal cross section | 2.5 mm² |
Identification | II 2 GD Ex eb IIC Gb | Operating temperature range | -60 °C ... 110 °C |
Ex-certified accessories | 3047293 D-UTTB 2,5/4
3047303 DP-UTTB 2,5/4
3047316 ATP-UTTB 2,5/4
1205053 SZS 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 | 20 A / 2.5 mm² | Ex temperature increase | 40 K (22.5 A / 2.5 mm²) |
Rated voltage | 352 V | for bridging with bridge | 352 V |
- At bridging between non-adjacent terminal blocks | 352 V | - At bridging between non-adjacent terminal blocks via PE terminal block | 275 V |
- At cut-to-length bridging with cover | 220 V | - At cut-to-length bridging with partition plate | 176 V |
Rated insulation voltage | 320 V | output | (Permanent) |
Rated current | 20 A | Maximum load current | 24 A |
Torque range | 0.5 Nm ... 0.6 Nm | Nominal cross section | 2.5 mm² |
Rated cross section AWG | 14 | Connection capacity rigid | 0.14 mm² ... 4 mm² |
Connection capacity AWG | 26 ... 12 | Connection capacity flexible | 0.14 mm² ... 2.5 mm² |
Connection capacity AWG | 26 ... 14 | 2 conductors with same cross section, solid | 0.14 mm² ... 1.5 mm² |
2 conductors with the same cross-section AWG rigid | 26 ... 16 | 2 conductors with same cross section, stranded | 0.14 mm² ... 1.5 mm² |
2 conductors with the same cross-section AWG flexible | 26 ... 16 | output | (Permanent) |
Contact resistance | 0.6 mΩ | output | (Permanent) |
Contact resistance | 0.4 mΩ | Width | 5.2 mm |
End cover width | 2.2 mm | Height | 69.9 mm |
Depth | 64.4 mm | Depth on NS 35/7,5 | 65 mm |
Depth on NS 35/15 | 72.5 mm | 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 |
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) 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 |
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 |
Result | Test passed | Requirement temperature-rise test | 45 K |
Result | Test passed | Short-time withstand current 2.5 mm² | 0.3 kA |
Short-time withstand current 4 mm² | 0.48 kA | Result | Test passed |
Test voltage setpoint | 1.89 kV | Result | Test passed |
Open side panel | Yes | Result | Test passed |
DIN rail/fixing support | NS 35 | Test force setpoint | 1 N |
Result | Test passed | Rotation speed | 10 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 | Time of exposure | 30 s |
Result | Test passed | Specification | DIN EN 50155 (VDE 0115-200):2008-03 |
Spectrum | Service life test category 1, class B, body mounted | Frequency | f |
ASD level | 1.857 (m/s²)²/Hz | Acceleration | 0.8g |
Test duration per axis | 5 h | Test directions | X-, Y- and Z-axis |
Result | Test passed | 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 |
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, no longer than 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 % |
Connection in acc. with standard | IEC 60947-7-1 | Mounting type | NS 35/7,5
NS 35/15 |
Specifications may be subject to change without notice