Product Model
UKK 5-HESI (6,3X32)

Selling Points
- 1Compact Design: The UKK 5-HESI (6,3X32) features a compact double-level fuse terminal block, perfect for space-constrained industrial settings.
- 2High Power Dissipation: With a maximum power dissipation of 2.5 W, this terminal block is suitable for handling high current loads.
- 3Robust Construction: Built with insulating material PA and rated for UL 94 V0, ensuring excellent fire protection and reliability.
- 4Easy Installation: Equipped with screw connections and a stripping length of 8 mm, making it easy to integrate into your system.
- 5Compliance Standards: Meets IEC 60947-7-1 and IEC 60947-7-3 standards, ensuring compliance with international electrical safety regulations.
Technical Specifications
Detailed engineering parameters based on manufacturer documentation
Parameter | Value | Parameter | Value |
---|---|---|---|
Note regarding marking | For terminal marking, please use marking material with 8.2 mm pitch. | Note regarding marking | For lever marking, please use flat marking material with 8.2 mm pitch. |
Product type | Fuse terminal block | Number of connections | 4 |
Number of rows | 2 | Article revision | 09 |
Overvoltage category | III | Degree of pollution | 3 |
Fuse type | Glass / ceramics / ... | Rated surge voltage | 6 kV |
Maximum power dissipation for nominal condition | 1.02 W | Fuse | G / 6,3 x 32 |
Maximum power dissipation | max. 2.5 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) | Number of connections per level | 2 |
Nominal cross section | 4 mm² | Screw thread | M3 |
Tightening torque | 0.5 ... 0.8 Nm | Stripping length | 8 mm |
Internal cylindrical gage | A4 | Connection in acc. with standard | IEC 60947-7-1 |
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 |
Cross-section with insertion bridge, rigid | 4 mm² | Cross-section with insertion bridge, flexible | 2.5 mm² |
2 conductors with same cross section, solid | 0.2 mm² ... 1.5 mm² | 2 conductors with same cross section, flexible | 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 | 32 A | Maximum load current | 32 A (Lower level) |
Nominal voltage | 400 V | Nominal cross section | 4 mm² |
Screw thread | M3 | Tightening torque | 0.5 ... 0.8 Nm |
Stripping length | 8 mm | Connection in acc. with standard | IEC 60947-7-3 |
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 (ferrule without plastic sleeve) | 0.25 mm² ... 4 mm² |
Flexible conductor cross section (ferrule with plastic sleeve) | 0.25 mm² ... 4 mm² | Cross-section with insertion bridge, rigid | 4 mm² |
Cross-section with insertion bridge, flexible | 2.5 mm² | 2 conductors with same cross section, solid | 0.2 mm² ... 1.5 mm² |
2 conductors with same cross section, flexible | 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 | 10 A |
Maximum load current | 10 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 60947-7-1
IEC 60947-7-3 |
Mounting type | NS 35/7,5
NS 35/15
NS 32 |
Specifications may be subject to change without notice