Heat-Shrink Busbar Sleeve for EV, ESS and Switchgear
Recovers to a tight fit on busbars with V-0 flame and rated voltage wall. Busbar sleeve shrinks to hug the bar so the insulation follows the cross-section and any corner buildup. We supply it rated to the busbar voltage with a V-0 wall and stable recovered dimensions. Give us the busbar cross-section, voltage, environment and color and we will specify shrink ratio, recovered wall and material.
Technical specifications
| Type | Polyolefin heat-shrink |
| Voltage | Rated to busbar voltage |
| Flame | UL 94 V-0 |
| Shrink ratio | 2:1 / 3:1 / 4:1 |
| Use | EV / ESS / switchgear busbar |
| Material | Heat-shrink tubing (polyolefin) |
💾 Datasheets & Test Reports
Download the technical data sheet for this product (PDF).
Applications by industry
- MV/LV switchgear busbar phase insulation
- Panel-board copper/alu busbar phase separation
- Busbar riser and drop-bar insulation in panels
- Transformer terminal busbar covering
- Insulated busbar for motor control centers
- Colour-coded phase shrink sleeving (L1/L2/L3)
Why crosslinked polyolefin for this application
Heavy-wall heat-shrink over busbars gives compact phase isolation, cut-to-the-bolt coverage and a clean finish, replacing tape layups that unravel in service.
Shrink temperature must not anneal the busbar temper; confirm hold against busbar dimensioning for a wrinkle-free, conformable fit.
Standards: UL 224, IEC 60684-3, EN 50343 (busbar use class).
Feature and remaining-wall review
Heat-Shrink Busbar Sleeve is cut to length before installation, and the adhesive-lined dual-wall grade needs a controlled heat profile for the adhesive to flow properly. Feature depth, edge distance and remaining wall are reviewed against critical geometries, with capability confirmed on your drawing rather than a blanket tolerance.
Inspection and traceability
We state the control plan with you. Batch traceability links raw material lot to finished part.
- First-article inspection (FAI) per your plan
- In-process dimensional checks at every station
- Batch certificate of conformance (COA) supplied on request
- Lot traceability to incoming material certificate
- Dielectric strength and insulation resistance testing available on request
Related components
800V Busbar Heat-Shrink Tubing
Related insulation component from the WELLELE catalog.
ESS Busbar Insulation Sleeve
Related insulation component from the WELLELE catalog.
Double-Wall Heat-Shrink Tube
Related insulation component from the WELLELE catalog.
Common questions
What are the typical applications for Heat-Shrink Busbar Sleeve for EV, ESS and Switchgear?
Typical applications are EV / ESS / switchgear busbar. Describe the duty and the environment, and we will confirm whether Heat-Shrink Busbar Sleeve is the right grade for it.
What material is used for Heat-Shrink Busbar Sleeve for EV, ESS and Switchgear?
The material is Heat-shrink tubing (polyolefin). Alternate grades can be quoted against your drawing.
Is material certification supplied with Heat-Shrink Busbar Sleeve for EV, ESS and Switchgear?
Batch records for Heat-Shrink Busbar Sleeve include the material certificate of analysis. First-article inspection and dielectric strength testing are optional add-ons set by your specification.
Can Heat-Shrink Busbar Sleeve for EV, ESS and Switchgear be made to our drawing?
Bore, wall and cut length on Heat-Shrink Busbar Sleeve come from your drawing. Send the print with the quantity and the quote follows it.
Engineering Guides & Selection Notes
Technical articles that go deeper on selecting and specifying Heat-Shrink Busbar Sleeve.
Get pricing for Heat-Shrink Busbar Sleeve for EV, ESS and Switchgear
The quote for Heat-Shrink Busbar Sleeve starts from your drawing and the annual volume. We verify the material against the duty and tolerance, confirm ID, OD, wall and every feature of Heat-Shrink Busbar Sleeve, and reply with manufacturing notes and pricing.