| Part Number: | ULO | - | TB25 | - | 300R | / | 5.0 | - | 02 | P | - | 4 | 000A |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Explanation: |
Brand ULO - Product brand |
Series Code TB25 - 5mm models |
Model 300 - Side wire entry, top screw access |
Pitch 5.0 - 5mm; TB25 |
Positions 02-24 - 2-24 poles; use a two-digit code |
Position Unit P - Poles |
Color 1 - Gray |
Product Version 000A - Standard product |
The 300 family uses screw-operated wire protectors in a single row. Standard 300 models accept wires from the side with screw access from above. The 300R orientation places wire entry above the PCB and screw access at the side. All four models cover 2–24 poles.
| Model | Series code | Pitch | Wire entry | Screw access |
|---|---|---|---|---|
| 300/5.0 | TB25 | 5mm | Side | Top |
| 300R/5.0 | Top | Side | ||
| 300/7.5 | TB37 | 7.5mm | Side | Top |
| 300R/7.5 | Top | Side |
| Models | IEC current | Rated voltage | Impulse voltage | Overvoltage category | Pollution degree |
|---|---|---|---|---|---|
| 300/5.0, 300R/5.0 | 24A | 250V | 4kV | III | 2 |
| 300/7.5, 300R/7.5 | 450V | 6kV |
| UL use group | Current | Voltage | Wire range |
|---|---|---|---|
| B | 10A | 300V | 22–14AWG |
| C | Not specified | Not specified | Not separately specified |
| D | 10A | 300V | 22–14AWG |
The UL values apply to all four models. The IEC voltage and impulse rating depend on pitch.
| Property | All four models |
|---|---|
| Solid conductor | 1–2.5mm² |
| Flexible conductor | 1–2.5mm² |
| Flexible conductor with ferrule | 1–2.5mm² |
| Clamping screw | M2.5 |
| Tightening torque | 0.4N·m |
| Strip length | 6mm |
| Housing | PA66, UL94V-0 |
| Insulation material group | I |
| Protection level | IP20 |
| Operating temperature | -40°C to 105°C |
| RoHS compliance | Specified |
| Model | Solder pin | Wire-protector spring | Conductor block | Screw material |
|---|---|---|---|---|
| 300/5.0 | Tin-plated brass | Not separately specified | Not separately specified | Zinc-plated steel |
| 300/7.5 | Stainless steel | |||
| 300R/5.0, 300R/7.5 | Not separately specified | Tin-plated brass | Nickel-plated brass |
N is the number of poles. All dimensions below are in millimetres. Each model uses 1mm-diameter pins and a PCB pattern with 1.2mm-diameter holes.
| Model | Body length | Body depth × height above PCB | Pin span | Longitudinal end reference | Pin projection | Transverse PCB reference |
|---|---|---|---|---|---|---|
| 300/5.0 | 5N | 9×12.5 | 5(N−1) | 2.5 | 4.3±0.3 | 4.3 in PCB layout |
| 300R/5.0 | 12.5×9 | Not separately dimensioned | 4.5±0.3 | 3.4 | ||
| 300/7.5 | 7.5N | 9×12.5 | 7.5(N−1) | 3.75 | 4.3 | 4.3 in PCB layout |
| 300R/7.5 | 12.5×9 | 4.5±0.3 | 3.4 |
The standard 300 side sections mark a 4.1mm edge-to-pin reference, while their PCB layouts mark 4.3mm. Both view-specific dimensions are retained in the individual drawings.




Apply individual tolerances where stated. Other dimensions use the following general tolerances; ranges and deviations are in millimetres.
| Dimension range | Total pitch tolerance | Nominal dimension tolerance |
|---|---|---|
| 0–30 | ±0.18 | ±0.20 |
| >30–53 | ±0.20 | ±0.25 |
| >53–70 | ±0.25 | ±0.30 |
| >70–90 | ±0.30 | ±0.35 |
| >90–115 | ±0.35 | ±0.44 |
| >115–150 | ±0.44 | ±0.55 |
| >150–200 | ±0.55 | ±0.70 |
| >200–250 | ±0.70 | ±0.80 |
| >250–320 | ±0.75 | ±0.90 |
| Geometric property | Range | Tolerance |
|---|---|---|
| Perpendicularity | Up to 10mm | 0.2mm |
| Over 10mm | 0.3mm | |
| Symmetry | All dimensions | 0.3mm |
| Straightness | Up to 100mm | 0.2mm |
| Parallelism | 100–150mm | 0.3mm |
| Over 150mm | 0.5mm |
Use TB25 for the 5mm models or TB37 for the 7.5mm models, followed by the complete 300 or 300R designation and pitch. XXP represents 02–24 poles; the standard drawing suffix is Y000A, where Y denotes colour.
| Colour code | Colour |
|---|---|
| 1 | Grey |
| 2 | Blue |
| 3 | Black |
| 4 | Green |
| 5 | Orange |
| 6 | Red |
| 7 | Transparent |
| 8 | Yellow |
| 9 | White |