Product Model
UT 2,5-MTD-DIO/L-R

Selling Points
- 1Integrated Diode Protection: Equipped with a 1N 4007 diode for reverse voltage protection up to 1300 V.
- 2High Surge Voltage: Rated for 8 kV surge voltage, ensuring reliable performance under electrical stress.
- 3Durable Construction: Made from high-quality insulating material PA, with a flammability rating of UL 94 V0.
- 4Efficient Connections: Screw connection method with a nominal cross section of 2.5 mm², supporting conductors from 26 AWG to 12 AWG.
- 5Compact Design: Measuring 5.2 mm in width and 57.8 mm in length, suitable for DIN rail mounting.
Technical Specifications
Detailed engineering parameters based on manufacturer documentation
Parameter | Value | Parameter | Value |
---|---|---|---|
General | The max. current is determined by the diode. Installed: Diode 1N 4007, reverse voltage: 1300 V, maximum continuous current: 0.5 A. | Product type | Component terminal block |
Number of connections | 2 | Number of rows | 1 |
Potentials | 1 | Article revision | 07 |
Overvoltage category | III | Degree of pollution | 3 |
Rated insulation voltage | 800 V | Rated surge voltage | 8 kV |
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 |
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 | 0.5 A | Maximum load current | 0.5 A |
Nominal cross section | 2.5 mm² | Component type | Diode 1N4007 |
Reverse voltage | 1300 V | Width | 5.2 mm |
End cover width | 2.2 mm | Height | 57.8 mm |
Depth on NS 35/7,5 | 47.5 mm | Depth on NS 35/15 | 55 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 | 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 | Test voltage setpoint | 9.8 kV |
Result | Test passed | Requirement temperature-rise test | Increase in temperature ≤ 45 K |
Result | Test passed | Test voltage setpoint | 2 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 | 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 |
Time of exposure | 30 s | Result | Test passed |
Specification | DIN EN 50155 (VDE 0115-200):2022-06 | Spectrum | Service life test category 2, bogie-mounted |
Frequency | f | 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 |
Specification | DIN EN 50155 (VDE 0115-200):2022-06 | Pulse shape | Half-sine |
Acceleration | 30g | Shock duration | 18 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 % | Mounting type | NS 35/7,5
NS 35/15 |
Specifications may be subject to change without notice