DL Series Busbar Insulator— Willele
High-quality BMC/SMC construction for durable, rigid support
Operating temperature: −40 °C to +140 °C
Brass or steel inserts with zinc coating for corrosion resistance
The DL Series Busbar Insulator is designed to provide superior insulation and robust support for busbars in
electrical systems. Manufactured from high-performance BMC (Bulk Moulding Compound) and
SMC (Sheet Moulding Compound), the parts withstand extreme temperatures, mechanical stress and
long-term environmental exposure. Zinc-coated brass or steel inserts ensure reliable fastening and corrosion
resistance. Color, insert type and material options are customizable to match project requirements, and the series
complies with international standards for dependable field performance.
Key Features
- Engineered BMC/SMC body for high strength, rigidity and electrical insulation
- Wide service temperature window: −40 °C to +140 °C
- Interchangeable brass or steel threaded inserts (zinc-coated) for superior corrosion resistance
- Customizable color / insert / material combinations for OEM needs
- Designed for fast, repeatable assembly on busbar support lines
- Complies with relevant international standards for reliable performance
Specifications
| Model | Width (mm) | Height (mm) | Depth (mm) |
|---|---|---|---|
| 6D3 / 8D3 | 220 | 80 | 80 |
| 6S3 / 8S3 | 295 | 105 | 105 |
| 10D3 / 12D3 | 220 | 80 | 80 |
| 10S3 / 12S3 | 295 | 105 | 105 |
| 6D4 / 8D4 | 300 | 80 | 80 |
| 6S4 / 8S4 | 400 | 105 | 105 |
| 10D4 / 12D4 | 300 | 80 | 80 |
| 10S4 / 12S4 | 400 | 105 | 105 |
| 7D3 | 155 | 60 | 60 |
| 7D4 | 215 | 60 | 60 |
Notes: dimensions are nominal. Insert thread/spacing and hole patterns can be customized.
Applications
- Busbar insulation and mechanical support in switchgear, panels and power distribution
- Renewables (PV/ESS) DC buses, industrial UPS cabinets and battery racks
- OEM electrical equipment requiring rigid, corrosion-resistant fastening
Why Choose Willele
Reliable Materials & Inserts
BMC/SMC body with zinc-coated brass/steel inserts delivers high mechanical strength and anti-corrosion performance.
Engineering Customization
Color, insert thread, hole pattern and lengths can be tailored to your busbar layout and assembly process.
Temperature Endurance
Stable operation from −40 °C to +140 °C suitable for outdoor cabinets and industrial environments.
Standards-Aligned
Designed to meet international practices for busbar insulation and mechanical safety to support global deployments.
FAQ
What materials are used?
BMC and SMC composites for the body; threaded inserts are brass or steel with zinc coating for corrosion resistance.
What is the temperature range?
−40 °C to +140 °C for robust service in harsh environments.
Can I customize color and inserts?
Yes—color, insert thread size, hole pattern and length can be tailored to your busbar design.
Do you provide dimension drawings?
Yes, 2D drawings for each model (e.g., 6D3/8D3, 6S3/8S3 … 7D4) are available upon request to validate mounting and hole spacing.
Are the inserts corrosion-resistant?
Yes. Inserts are zinc-coated brass or steel to improve corrosion resistance in outdoor/industrial cabinets.
What standards do these insulators meet?
They are engineered to comply with international standards for busbar insulation and mechanical safety used by global OEMs.
Need matching inserts, hole pattern or color? Send your drawing—quotes in 12 hours.
