Battery Energy Storage (ESS) Busbar Insulation Sleeve
Insulation for battery racks and ESS busbar links. ESS busbars carry high current in dense packs, so the sleeve must insulate, resist flame and survive the pack environment. We supply it to the busbar voltage and layout. Sleeve is cut to length and can be supplied pre-slit or with features for the rack assembly.
Technical specifications
| Use | Battery ESS busbars |
| Voltage | Rated to busbar |
| Flame | UL 94 V-0 |
| Options | Cut length, pre-slit |
| Material | Heat-shrink tubing (polyolefin) |
💾 Datasheets & Test Reports
Download the technical data sheet for this product (PDF).
Applications by industry
- Battery pack module-to-module busbar sleeve insulation
- ESS DC busbar positive/negative phase separation
- Containerised battery energy storage cabinet busbar covers
- Lithium battery cell interconnector covering
- Inverter DC-link busbar insulation in ESS
- High-DC-voltage creepage control on pack busbars
Why crosslinked EPDM / polyolefin for this application
ESS packs stack hundreds of volts on tight busbars near cell terminals, so the sleeve must hold DC dielectric and edge coverage while fitting the crowded module footprint.
Confirm wall and DC rating for the pack voltage; sharp busbar edges need deburring. Verify thermal cycling fit as pack heats and cools.
Standards: UL 224, IEC 62631, GB/T 36276 (ESS, China-related).
Feature and remaining-wall review
Length is cut before installation for Battery Energy Storage (ESS) Busbar Insulation Sleeve, and the dual-wall adhesive grade wants a controlled heat profile so the adhesive flows where it should. We review feature depth, edge distance and remaining wall against critical geometries, confirming capability on your drawing rather than a general 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.
Heat-Shrink Busbar 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 Battery Energy Storage (ESS) Busbar Insulation Sleeve?
Typical applications are Battery ESS busbars. Send the duty and the environment, and we will say whether this grade is the right one for Battery Energy Storage (ESS) Busbar Insulation Sleeve.
What material is used for Battery Energy Storage (ESS) Busbar Insulation Sleeve?
The material is Heat-shrink tubing (polyolefin). Alternate grades can be quoted against your drawing.
Is material certification supplied with Battery Energy Storage (ESS) Busbar Insulation Sleeve?
Yes. A material COA is issued for every batch of Battery Energy Storage (ESS) Busbar Insulation Sleeve, with first-article inspection and additional electrical testing available to your specification.
Can Battery Energy Storage (ESS) Busbar Insulation Sleeve be made to our drawing?
Bore, wall and cut length for Battery Energy Storage (ESS) Busbar Insulation Sleeve are supplied to your drawing. Send the drawing with the target quantity and we confirm feasibility and price.
Engineering Guides & Selection Notes
Engineering notes covering the sizing and specification questions around Battery Energy Storage (ESS) Busbar Insulation Sleeve.
Get pricing for Battery Energy Storage (ESS) Busbar Insulation Sleeve
Put the drawing and the annual volume into the enquiry for Battery Energy Storage (ESS) Busbar Insulation Sleeve. We review the material against your duty and tolerance and check ID, OD, wall and features, then reply with what we can hold on Battery Energy Storage (ESS) Busbar Insulation Sleeve and what it costs.