| Part Number: | ULO | - | TB347 | - | UKKB 5 BU |
|---|---|---|---|---|---|
| Explanation: |
Brand |
Product Code TB345 - UKKB3 model |
Terminal and Color UKKB 3 BU - Blue UKKB3; TB345; 2.5mm² nominal cross-section |
UKKB3 and UKKB5 use screw connections on two separate electrical potentials. Each has four connections and a 67.15mm-long asymmetric body for NS35/7.5 rail mounting. Choose the nominal conductor size, terminal width and matching bridge references for the required assembly.
| Parameter | UKKB3 | UKKB5 |
|---|---|---|
| Gray model | ULO-TB345-UKKB3 | ULO-TB347-UKKB5 |
| Blue option | ULO-TB345-UKKB 3 BU | ULO-TB347-UKKB 5 BU |
| Levels / connections / potentials | 2 / 4 / 2 | |
| Nominal conductor cross section | 2.5mm² | 4mm² |
| IEC nominal current | 24A | 32A |
| Maximum load current | 32A | |
| IEC nominal voltage / impulse voltage | 500V / 6kV | |
| Overvoltage category / pollution degree | III / 3 | |
| Solid conductor | 0.2–4mm²; 24–12AWG | |
| Flexible conductor | 0.2–2.5mm²; 24–14AWG | 0.2–4mm²; 24–12AWG |
| Flexible conductor with ferrule | 0.25–1.5mm² | 0.25–2.5mm² |
| Screw size / tightening torque | M3 / 0.5N·m | |
| Stripping length | 8mm | |
| Model | Use group | Rated current | Rated voltage | Conductor range |
|---|---|---|---|---|
| UKKB3 | B | 20A | 300V | 28–12AWG |
| C | ||||
| UKKB5 | B | 30A | 26–10AWG | |
| C | ||||
| D | 5A | 600V |
Apply the UL wire ranges with the listed UL use-group ratings. General solid and flexible conductor data are listed separately above.
| Parameter | Value for both models |
|---|---|
| Connection method | Screw connection |
| Protection level | IP20 |
| Operating temperature | -40°C to +105°C |
| Insulation material / group | PA66 / I |
| Flammability classification | UL94V-0 |
| Contact material / surface | Copper alloy / tin plated |
| Mounting rail | NS35/7.5 |
| Model | Body width | Length | Overall height | Rail-seat-to-top height | Widest local feature |
|---|---|---|---|---|---|
| UKKB3 | 5.15mm | 67.15mm | 60.9mm | 54.6mm | 7.75mm |
| UKKB5 | 6.15mm | 8.75mm |
| Accessory | UKKB3 | UKKB5 |
|---|---|---|
| End cover | ULO-TB392-D-UKKB3/5 | |
| Compensation end cover | ULO-TB392-DP-UKKB3/5 | |
| Partition plate | ULO-TB395-TS-KK3 | |
| Fixed bridge | ULO-TB390-FBI XX-5 | ULO-TB390-FBI XX-6 |
| Pluggable bridge | ULO-TB390-EB XX-5 | ULO-TB390-EB XX-6 |
| Marker strip | ULO-TB391-ZB5; ULO-TB391-ZBF5 | ULO-TB391-ZB6; ULO-TB391-ZBF6 |
| Marker card | ULO-TB394-B1; ULO-TB394-B2; ULO-TB394-B3 | |
| End clamp | ULO-TB393-E/UK; ULO-TB393-E/UK1; ULO-TB393-E-WA | |
| Dimension range | Total pitch tolerance | Nominal dimension tolerance |
|---|---|---|
| 0–30mm | ±0.18mm | ±0.20mm |
| Over 30–53mm | ±0.20mm | ±0.25mm |
| Over 53–70mm | ±0.25mm | ±0.30mm |
| Over 70–90mm | ±0.30mm | ±0.35mm |
| Over 90–115mm | ±0.35mm | ±0.44mm |
| Over 115–150mm | ±0.44mm | ±0.55mm |
| Over 150–200mm | ±0.55mm | ±0.70mm |
| Over 200–250mm | ±0.70mm | ±0.80mm |
| Over 250–320mm | ±0.75mm | ±0.90mm |
Geometric tolerances: perpendicularity 0.2mm through 10mm and 0.3mm above 10mm; symmetry 0.3mm; straightness 0.2mm through 100mm; parallelism 0.3mm over 100–150mm and 0.5mm above 150mm.
