Product Model
UKK 5-HESILA 250 (5X20)

Key Features
- 1Screw connection for easy installation and reliable connections.
- 2Insulating material PA with inflammability class UL 94 V0 for safety.
- 3Rated surge voltage of 6 kV for reliable protection against electrical surges.
- 4Supports conductor cross sections from 0.2 mm² to 4 mm².
- 5Dimensions of 8.2 mm width, 86.5 mm length, and 79 mm height for space-efficient installations.
Technical Specifications
Detailed engineering parameters based on manufacturer documentation
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Product type | Fuse terminal block | Number of connections | 4 |
| Number of rows | 2 | Article revision | 06 |
| Overvoltage category | III | Degree of pollution | 3 |
| Fuse type | Glass / ceramics / ... | Rated surge voltage | 6 kV |
| Maximum power dissipation for nominal condition | 4.06 W | Fuse | G / 5 x 20 |
| LED voltage range | 110 V AC/DC ... 250 V AC/DC | LED current range | 0.2 mA ... 0.9 mA |
| Maximum power dissipation | max. 1.6 W (with single arrangement of the fuse terminal block in the event of overload)
max. 1.6 W (With interconnected arrangement of several fuse terminal blocks in the event of overload)
max. 4 W (with single arrangement of the fuse terminal block in the event of a short-circuit)
max. 2.5 W (With interconnected arrangement of several fuse terminal blocks in the event of a short-circuit) | LED voltage range | 110 V AC/DC ... 250 V AC/DC |
| Number of connections per level | 2 | Screw thread | M3 |
| Tightening torque | 0.5 ... 0.8 Nm | Stripping length | 8 mm |
| Internal cylindrical gage | A4 | Connection in acc. with standard | IEC / EN |
| Conductor cross section rigid | 0.2 mm² ... 4 mm² | Cross section AWG | 24 ... 12 (converted acc. to IEC) |
| Conductor cross section flexible | 0.2 mm² ... 4 mm² | Conductor cross section, flexible [AWG] | 24 ... 12 (converted acc. to IEC) |
| Conductor cross-section flexible (ferrule without plastic sleeve) | 0.25 mm² ... 4 mm² | Flexible conductor cross section (ferrule with plastic sleeve) | 0.25 mm² ... 4 mm² |
| 2 conductors with same cross section, solid | 0.2 mm² ... 1.5 mm² | 2 conductors with same cross section, flexible, with ferrule without plastic sleeve | 0.25 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 | 6.3 A |
| Nominal voltage | 400 V | Width | 8.2 mm |
| Height | 86.5 mm | Depth on NS 32 | 84 mm |
| Depth on NS 35/7,5 | 79 mm | Depth on NS 35/15 | 86.5 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 / EN | Mounting type | NS 35/7,5
NS 35/15
NS 32 |
Specifications may be subject to change without notice
