Product Model
UT 4-PE/HESI (5X20)

Selling Points
- 1High Reliability: Designed for process technology and potentially explosive areas with Ex nA approval.
- 2Versatile Connectivity: Screw connection with NS 35/7.5 and NS 35/15 mounting types.
- 3Compliance Standards: Meets IECEx, UL, cUL, EAC, CSA, and cULus standards.
- 4Temperature Range: Operates from -60°C to +130°C, ensuring broad temperature adaptability.
- 5Efficient Power Handling: Maximum power dissipation of 1.6 W per fuse terminal block in nominal conditions.
Technical Specifications
Detailed engineering parameters based on manufacturer documentation
Parameter | Value | Parameter | Value |
---|---|---|---|
Product type | Fuse terminal block | Number of connections | 2 |
Number of rows | 1 | Article revision | 09 |
Overvoltage category | III | Degree of pollution | 3 |
Rated surge voltage | 6 kV | Maximum power dissipation for nominal condition | 1.02 W |
Grounding foot | Yes | Number of connections per level | 2 |
Nominal cross section | 4 mm² | Screw thread | M3 |
Note | Please observe the current carrying capacity of the DIN rails. | Tightening torque | 0.6 ... 0.8 Nm |
Stripping length | 9 mm | Internal cylindrical gage | A4 |
Connection in acc. with standard | IEC 60947-7-2/IEC 60947-7-3 | Conductor cross section rigid | 0.14 mm² ... 6 mm² |
Cross section AWG | 26 ... 10 (converted acc. to IEC) | Conductor cross section flexible | 0.14 mm² ... 6 mm² |
Conductor cross section, flexible [AWG] | 26 ... 10 (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 | Nominal current | 6.3 A |
Maximum load current | 6.3 A (the current is determined by the fuse used) | Nominal voltage | 500 V |
Nominal cross section | 1 mm² | Identification | II 3 G Ex ec llC Gc |
Operating temperature range | -60 °C ... 130 °C | Ex-certified accessories | 1205053 SZS 0,6X3,5
3022276 CLIPFIX 35-5
3022218 CLIPFIX 35 |
Rated voltage | 250 V | output | (Permanent) |
Torque range | 0.6 Nm ... 0.8 Nm | Nominal cross section | 4 mm² |
Rated cross section AWG | 12 | Connection capacity rigid | 0.14 mm² ... 6 mm² |
Connection capacity AWG | 26 ... 10 | Connection capacity flexible | 0.14 mm² ... 6 mm² |
Connection capacity AWG | 26 ... 10 | 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 | Conductor cross section flexible, with ferrule without plastic sleeve min. | 0.14 mm² |
Conductor cross section flexible, with ferrule without plastic sleeve max. | 4 mm² | Single conductor/terminal point, flexible, with ferrule, without plastic sleeve, AWG | 26 ... 12 |
output | (Permanent) | Rated current | 6.3 A (4 mm²) |
Maximum load current | 6.3 A (6 mm²) | Contact resistance | 5 mΩ |
Width | 6.2 mm | Height | 70.8 mm |
Depth on NS 35/7,5 | 73 mm | Depth on NS 35/15 | 80.5 mm |
Color | black (RAL 9005) | 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)) | 130 °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) | 28 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 | Open side panel | No |
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 % |
Connection in acc. with standard | IEC 60947-7-2/IEC 60947-7-3 | Mounting type | NS 35/7,5
NS 35/15 |
Specifications may be subject to change without notice