| Part Number: | ULO | - | TB140 | - | UDK4 | - | MTK BU |
|---|---|---|---|---|---|---|---|
| Explanation: |
Brand |
Product Code |
Terminal Model UDK4 - Four-connection, single-level terminal with 4mm² nominal cross-section; spelling in the blue drawing code |
Function and Color MTK BU - Blue knife disconnect version; complete code ULO-TB140-UDK4-MTK BU |
UDK4-MTK combines four screw connections on a single level with a central knife disconnect mechanism. The terminal fits NS35/7.5 rail and has a 6.15mm body width. Gray and blue housing options are available.
| Model | Color | Levels | Connections |
|---|---|---|---|
| ULO-TB140-UDK 4-MTK | Gray | 1 | 4 |
| ULO-TB140-UDK4-MTK BU | Blue |
| Parameter | Value |
|---|---|
| Nominal current | 16A |
| Rated impulse voltage | 8kV |
| Overvoltage category / pollution degree | III / 3 |
| Nominal conductor cross section | 4mm² |
| Solid conductor | 0.2–6mm²; 24–10AWG |
| Flexible conductor | 0.2–4mm²; 24–12AWG |
| Flexible conductor with ferrule | 0.25–1.5mm² |
| Screw size / tightening torque | M3 / 0.5N·m |
| Stripping length | 8mm |
| UL use group | Rated current | Rated voltage | Conductor range |
|---|---|---|---|
| B | 15A | 300V | 30–10AWG |
| C | |||
| D | 5A | 600V |
Use the UL wire range with the corresponding UL ratings. General conductor connection ranges are listed separately above.
| Parameter | Value |
|---|---|
| Body width × length × height | 6.15mm × 63.6mm × 45.9mm |
| Rail-seat-to-body-top height | 39.6mm |
| Rail center to right end | 31.8mm |
| Half-rail width | 17.5mm |
| Mounting rail | NS35/7.5 |
| Protection level | IP20 |
| Operating temperature | -40°C to +105°C |
| Insulation material / group | PA / I |
| Flammability classification | UL94V-2 |
| Contact material / finish | Copper alloy / tin plated |
| Accessory | Reference |
|---|---|
| Marker strip | 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.
