Phoenix ContactFeed-through terminal blocks, multi-conductor terminal blocks, and multi-level terminal blocks
Product Model
UK 16 N BU
Key Features
- 1Supports up to 101 A with a 25 mm² conductor cross section.
- 2Withstood surge voltage tests up to 9.8 kV and power-frequency withstand voltage tests up to 2 kV.
- 3Compatible with conductors from 14 AWG to 4 AWG and flexible conductors from 4 mm² to 16 mm².
- 4Meets fire protection standards for rail vehicles (DIN EN 45545-2) and has a flammability rating of UL 94 V0.
- 5Features screw termination and is available in various mounting types, including NS 35/7,5 and NS 35/15.
Technical Specifications
Detailed engineering parameters based on manufacturer documentation
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Product type | Feed-through terminal block | Number of connections | 2 |
| Number of rows | 1 | Potentials | 1 |
| Article revision | 09 | Overvoltage category | III |
| Degree of pollution | 3 | Rated surge voltage | 8 kV |
| Maximum power dissipation for nominal condition | 2.43 W | Number of connections per level | 2 |
| Nominal cross section | 16 mm² | Screw thread | M4 |
| Tightening torque | 1.5 ... 1.8 Nm | Stripping length | 11 mm |
| Internal cylindrical gage | B7 | Connection in acc. with standard | IEC 60947-7-1 |
| Conductor cross section rigid | 2.5 mm² ... 25 mm² | Cross section AWG | 12 ... 4 (converted acc. to IEC) |
| Conductor cross section flexible | 4 mm² ... 16 mm² | Conductor cross section, flexible [AWG] | 10 ... 6 (converted acc. to IEC) |
| Conductor cross-section flexible (ferrule without plastic sleeve) | 1.5 mm² ... 16 mm² | Flexible conductor cross section (ferrule with plastic sleeve) | 1.5 mm² ... 16 mm² |
| 2 conductors with same cross section, solid | 1.5 mm² ... 6 mm² | 2 conductors with same cross section, flexible | 1.5 mm² ... 4 mm² |
| 2 conductors with same cross section, flexible, with ferrule without plastic sleeve | 1.5 mm² ... 6 mm² | 2 conductors with the same cross section, flexible, with TWIN ferrule with plastic sleeve | 0.75 mm² ... 10 mm² |
| Nominal current | 76 A | Maximum load current | 101 A (with 25 mm² conductor cross section) |
| Nominal voltage | 800 V | Nominal cross section | 16 mm² |
| Identification | II 2 GD Ex eb IIC Gb | Operating temperature range | -60 °C ... 110 °C |
| Ex-certified accessories | 3006027 D-UK 16
1205066 SZS 1,0X4,0 VDE
1201442 E/UK | List of bridges | Fixed bridge / FBI 2-12 / 0200075
Fixed bridge / FBI 10-12 / 0203454 |
| Bridge data | 66 A / 16 mm² | Ex temperature increase | 40 K (75.1 A / 16 mm²) |
| Rated voltage | 690 V | for bridging with bridge | 690 V |
| Rated insulation voltage | 630 V | output | (Permanent) |
| Rated current | 68 A | Maximum load current | 91 A |
| Contact resistance | 0.17 mΩ | Torque range | 1.5 Nm ... 1.8 Nm |
| Nominal cross section | 16 mm² | Rated cross section AWG | 6 |
| Connection capacity rigid | 2.5 mm² ... 25 mm² | Connection capacity AWG | 14 ... 4 |
| Connection capacity flexible | 4 mm² ... 16 mm² | Connection capacity AWG | 12 ... 6 |
| 2 conductors with same cross section, solid | 1.5 mm² ... 6 mm² | 2 conductors with the same cross-section AWG rigid | 16 ... 10 |
| 2 conductors with same cross section, stranded | 1.5 mm² ... 4 mm² | 2 conductors with the same cross-section AWG flexible | 16 ... 12 |
| Width | 12.2 mm | End cover width | 1.5 mm |
| Height | 42.5 mm | Depth on NS 32 | 59 mm |
| Depth on NS 35/7,5 | 54 mm | Depth on NS 35/15 | 61.5 mm |
| Color | blue (RAL 5015) | 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 | Test voltage setpoint | 9.8 kV |
| Result | Test passed | Requirement temperature-rise test | Increase in temperature ≤ 45 K |
| Result | Test passed | Short-time withstand current 16 mm² | 1.92 kA |
| Result | Test passed | Test voltage setpoint | 2 kV |
| Result | Test passed | Open side panel | Yes |
| Result | Test passed | DIN rail/fixing support | NS 32/NS 35 |
| Test force setpoint | 10 N | Result | Test passed |
| Rotation speed | 10 rpm | Revolutions | 135 |
| Conductor cross section/weight | 2.5 mm² / 0.7 kg
16 mm² / 2.9 kg
25 mm² / 4.5 kg | Result | Test passed |
| Time of exposure | 30 s | 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
NS 32 |
Specifications may be subject to change without notice