| Part Number: | ULO | - | TB51 | - | 127A | / | 5.0 | - | 02 | P | - | 4 | 000A |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Explanation: |
Brand |
Series Code TB51 - 5.0mm pitch |
Model 127 - Single level |
Pitch 5.0 - 5.0mm; TB51 |
Positions 02–24 - Two-digit count from 2 to 24 positions; single-level total for 127, positions per level for 127A and 127B (4–48 total across two levels) |
Position Suffix |
Colour 1 - Grey |
Customer Requirements 000A - Standard suffix shown in the six drawings |
The 127 family uses screw-operated rising clamps and through-hole solder pins. Plain 127 models have one terminal level; 127A and 127B have two staggered levels with opposite longitudinal offsets. Six models provide 5mm or 5.08mm pitch. Match the model suffix, pitch and pin layout before board assembly.
| Model | Pitch | Terminal layout | Pole arrangement |
|---|---|---|---|
| TB51-127/5.0 | 5mm | Single level | 2–24 positions |
| TB51-127A/5.0 | Two levels, A stagger | 2×(2–24) positions | |
| TB51-127B/5.0 | Two levels, B stagger | ||
| TB53-127/5.08 | 5.08mm | Single level | 2–24 positions |
| TB53-127A/5.08 | Two levels, A stagger | 2–24 positions per level | |
| TB53-127B/5.08 | Two levels, B stagger |
The IEC values below apply to overvoltage category III and pollution degree 2. Values for other combinations are not specified.
| Model | IEC rated current | IEC rated voltage | IEC impulse voltage | UL group B | UL group D |
|---|---|---|---|---|---|
| TB51-127/5.0 | 15A | 250V | 4kV | 12A/300V | Not specified |
| TB51-127A/5.0 | 15A/300V | 10A/300V | |||
| TB51-127B/5.0 | 2kV | ||||
| TB53-127/5.08 | 4kV | 12A/300V | Not specified | ||
| TB53-127A/5.08 | 10A/300V | ||||
| TB53-127B/5.08 |
The UL wire range is 26–14AWG for all six models. UL group C values are not specified. Ratings apply to each terminal circuit; the two-level construction does not increase the current rating of a circuit.
| Models | Solid conductor | Flexible conductor | Flexible conductor with ferrule | Clamping screw | Tightening torque | Strip length |
|---|---|---|---|---|---|---|
| TB51-127/5.0 | 0.75–1.5mm² | 0.75–1.5mm² | 0.75–1.5mm² | M3 | Not specified for the M3 version | 6–7mm |
| TB53-127/5.08 | M2.5 | 0.4N·m | 6mm | |||
| All 127A and 127B models | 0.5–1.5mm² | 0.5–1.5mm² | 0.5–1.5mm² | M3 | 0.5N·m |
| Operating parameter | Specification |
|---|---|
| Connection method | Screw-operated rising clamp |
| Protection rating | IP20 |
| Operating temperature | -40°C to +105°C |
| Separate fixing screw and torque | Not specified |
| Component or property | All six models |
|---|---|
| Housing | PA66, UL94V-0 |
| Insulation material group | I |
| Solder pin | Tin-plated brass |
| Clamping block | Nickel-plated brass |
| Screw | Zinc-plated steel |
| RoHS compliance | Declared |
| Field | Selection |
|---|---|
| Model and pitch | Select one of the six complete designations above |
| Position code | 02P–24P; N denotes positions per level for A and B models |
| Colour code | 1: Grey; 2: Blue; 3: Black; 4: Green; 5: Orange; 6: Red; 7: Transparent; 8: Yellow; 9: White |
| Customer requirement suffix | 000A standard designation |
Dimensions are in millimetres. N is the number of terminal positions on one level. A and B layouts use a half-pitch stagger in opposite directions. The length expressions below describe each level; the stagger extends the combined longitudinal envelope beyond one level.
| Model | Length per level | Body depth | Height | Solder-tail length | Pin width × thickness |
|---|---|---|---|---|---|
| TB51-127/5.0 | 5×N | 8.30 | 10.00 | 3.80±0.30 | 1.00×0.60 |
| TB53-127/5.08 | 5.08×N | ||||
| TB51-127A/5.0 and TB51-127B/5.0 | 5×N | 18.30 | 19.20 upper; 10.10 lower | 4.00±0.30 | 0.90×0.60 |
| TB53-127A/5.08 and TB53-127B/5.08 | 5.08×N |
Single-level PCB layouts specify 1.20mm holes and a 4.15mm pin-to-body edge offset. The two-level layouts have 10.16±0.30mm pin-row spacing and a 4.35mm front edge offset; PCB hole diameter is not specified in those drawings. The 5.08mm single-level model also shows a 0.50mm interlocking projection separately from its nominal body length.
Apply these values only where an individual dimension does not specify a tolerance.
| Dimension range | Total pitch tolerance | Nominal dimension tolerance |
|---|---|---|
| Over 0mm to 30mm | ±0.18mm | ±0.20mm |
| Over 30mm to 53mm | ±0.20mm | ±0.25mm |
| Over 53mm to 70mm | ±0.25mm | ±0.30mm |
| Over 70mm to 90mm | ±0.30mm | ±0.35mm |
| Over 90mm to 115mm | ±0.35mm | ±0.44mm |
| Over 115mm to 150mm | ±0.44mm | ±0.55mm |
| Over 150mm to 200mm | ±0.55mm | ±0.70mm |
| Over 200mm to 250mm | ±0.70mm | ±0.80mm |
| Over 250mm to 320mm | ±0.75mm | ±0.90mm |
| Geometric characteristic | Applicable dimension | Tolerance |
|---|---|---|
| Perpendicularity | 0–10mm | 0.2mm |
| Over 10mm | 0.3mm | |
| Symmetry | All | 0.3mm |
| Straightness | Over 0mm to 100mm | 0.2mm |
| Parallelism | Over 100mm to 150mm | 0.3mm |
| Over 150mm | 0.5mm |
Six model-specific technical drawings are attached, including the A and B PCB layouts.
