Non-Insulated Butt Connector
Non-Insulated Butt Connector
Join two conductors with TONFUL BN non-insulated butt connectors. Compare the original wire ranges, tube diameters and lengths to choose a suitable crimp splice.
- BN series · 17 original catalog models
- Tin-plated copper · non-insulated construction
- Model-specific wire range and dimensions
- Product selection, samples and packaging reviewed with your enquiry
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Overview
Join two conductors with TONFUL BN non-insulated butt connectors. Compare the original wire ranges, tube diameters and lengths to choose a suitable crimp splice. The original catalog includes 17 models; all model references and table values are retained below.
The terminal is non-insulated. Confirm insulation or enclosure requirements for the completed assembly against the application and approved design.
Features
- Tin-plated copper: material and finish retained from TONFUL’s original product information.
- Cylindrical butt splice interface: match the contact geometry to your installation.
- Crimp connection: select tooling appropriate for the conductor and barrel.
- Model-specific dimensions: 17 original catalog models available for comparison.
Technical Specifications
| Parameter | Specification |
|---|---|
| Series | BN |
| Contact material | Copper tube |
| Plating | Tin |
| Insulation | Non-insulated |
| Interface | cylindrical butt splice |
| Catalog models | 17 |
| Wire range and dimensions | See model-specific catalog tables below |
Where listed, current values apply to the catalog group, not every installation. Confirm voltage, temperature, environmental conditions and required documentation for your selected model.
Dimension
Dimensions are in millimeters unless otherwise indicated. Original model numbers, units and values are preserved. On small screens, scroll each table horizontally.
Terminal Material:Copper Tube Plating:Tin
| Item No. | Wire section | Dimension(mm) | |||
|---|---|---|---|---|---|
| A.W.G. | mm² | DΦ | dΦ | L | |
| BN0.5 | 26-22 | 0.2-0.5 | 2.1 | 1.3 | 12.0 |
| BN1.25 | 22-16 | 0.5-1.5 | 3.3 | 1.7 | 15.0 |
| BN2 | 16-14 | 1.5-2.5 | 3.9 | 2.3 | 15.0 |
| BN3.5 | 14-12 | 2.5-4 | 5.0 | 3.0 | 15.0 |
| BN5.5 | 12-10 | 4-6 | 5.4 | 3.4 | 15.0 |
| BN8 | 8 | 8 | 7.0 | 4.6 | 21.0 |
| BN14 | 6 | 14 | 8.9 | 5.9 | 26.0 |
| BN22 | 4 | 22 | 11.3 | 7.8 | 29.0 |
| BN38 | 2 | 38 | 13.2 | 9.5 | 32.0 |
| BN60 | 1/0 | 60 | 15.3 | 11.4 | 36.0 |
| BN70 | 2/0 | 70 | 17.5 | 13.3 | 37.0 |
| BN80 | 3/0 | 80 | 19.5 | 14.5 | 38.0 |
| BN100 | 4/0 | 100 | 22.1 | 16.4 | 38 |
| BN150 | 250/300 | 150 | 26.4 | 19.5 | 54 |
| BN180 | 300/350 | 180 | 28.5 | 21 | 57 |
| BN200 | 400/500 | 200 | 32.4 | 24 | 63 |
| BN325 | 500/600 | 325 | 37.0 | 28 | 72 |

Selection Guide
Match both conductors to the listed wire section and verify the inner diameter, outer diameter and tube length. Insert and crimp each wire using the tooling and strip length approved for the selected connector.
Use an appropriate non-insulated-terminal crimp tool. Confirm crimp settings, pull-out retention, inspection criteria and any required insulation before approving production.
Applications
Potential uses include cable splicing, equipment wiring and harness repairs where a compatible non-insulated crimp splice is specified. Product compatibility and qualification depend on the selected model and the approved assembly.
Ordering Information
Send the complete BN model number, conductor size, mating-interface details, application and order quantity. Include your sample, inspection and packaging requirements.
Explore TONFUL terminals and connectors or contact TONFUL Electric to discuss the selected model.
Product photographs are high-definition illustrative recreations of the original images. Confirm product configuration against an approved sample.




