
CT 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
Overview
The CT Series Busbar Insulator provides robust insulation and rigid triangular support for busbars in
switchgear, panels and OEM equipment. It is moulded from high-performance BMC/SMC composites to resist heat,
impact and long-term environmental exposure. Threaded brass or steel inserts with zinc coating deliver secure
fastening and corrosion resistance. Options for color, insert thread, hole pattern and length allow easy
customization. The series is engineered to align with international standards for dependable field performance.
Key Features
- Rigid BMC/SMC body for high mechanical strength and electrical insulation
- Wide service temperature window: −40 °C to +140 °C
- Zinc-coated brass or steel inserts for enhanced corrosion resistance
- Customizable color, insert thread, hole pattern and overall length
- Designed for fast, repeatable OEM assembly; long life in service
- Aligned with international practices for busbar insulation and safety
Specifications
| Model | Width (mm) | Phase Number | Height (mm) |
|---|---|---|---|
| CT2-15 | 50 | 2 | 40 |
| CT2-20 | 60 | 2 | 60 |
| CT2-25 | 80 | 2 | 60 |
| CT5-25 | 135 | 5 | 55 |
| CT4-30 | 132 | 4 | 30 |
| CT4-40 | 164 | 4 | 148 |
| CT4-50 | 212 | 4 | 200 |
| CJ4-30 | 230 | 4 | 100 |
| CJ4-40 | 230 | 4 | 100 |
| CJ-50 | 275 | 4 | 100 |
Notes: dimensions are nominal. Insert thread/spacing and hole patterns can be customized.
Dimension

Applications
- Busbar insulation and mechanical support in switchgear, panels and power distribution
- PV/ESS DC buses, battery racks and industrial UPS cabinets
- OEM equipment requiring rigid, corrosion-resistant fastening
Why Choose Willele
Reliable Materials & Inserts
BMC/SMC body with zinc-coated brass/steel inserts ensures strength and anti-corrosion performance.
Engineering Customization
Color, insert thread, hole pattern and lengths tailored to your busbar layout.
Temperature Endurance
Stable operation from −40 °C to +140 °C for outdoor/industrial cabinets.
Standards-Aligned
Designed to align with international practices for busbar insulation and safety.
FAQ
What materials are used?
BMC and SMC composites for the body; threaded inserts are brass or steel with zinc coating.
What is the temperature range?
−40 °C to +140 °C.
Can I customize color and inserts?
Yes—color, insert thread, hole pattern and length can be tailored to your drawing.
Send your drawing for thread & hole pattern matching — quotes in 12 hours.




