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. Yes. We can supply cut-to-length and pre-slit sleeve so it drops over the busbar durin
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. Yes. We can supply cut-to-length and pre-slit sleeve so it drops over the busbar durin
Technical specifications
| Use | Battery ESS busbars |
| Voltage | Rated to busbar |
| Flame | UL 94 V-0 |
| Options | Cut length, pre-slit |
💾 Datasheets & Test Reports
Download the technical data sheet for this product (PDF).
Information required for quotation
| Base tube | Approved material grade, ID, OD, wall and conditioning as per drawing |
| Datums | Drawing datum scheme and measurement reference |
| Key dimensions | Feature positions, depths, pitch and diameters reviewed before quotation |
| Thread / profile | Standard or custom profile, class, depth, engagement and gage method |
| Other features | Holes, slots, steps, chamfers, cuts and marking |
| Acceptance | Tolerances, sampling, gages, FAI and inspection report |
| Order | Prototype and production quantity, packaging and delivery target |
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
Cut to length before installation; dual-wall adhesive lined requires controlled heat profile for proper flow. Review feature depth, edge distance and remaining wall against critical geometries. Capability is confirmed on your drawing, not from 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
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Heat-Shrink Busbar Sleeve
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Double-Wall Heat-Shrink Tube
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Common questions
What recovery temperature is needed?
Standard polyolefin recovers at 90–135 °C. PTFE at 300–400 °C. Match the recovery temperature to your assembly heat profile.
Is it RoHS and REACH compliant?
Yes. All standard grades comply with RoHS 2011/65/EU and REACH 1907/2006. Certificates supplied per batch.
Can heat-shrink be printed?
Yes — identification bands, logos and warnings printed before or after shrink. Ask for print area and ink compatibility.
What wire sizes does it fit?
ID from 0.2 mm to 200 mm flat wall, 3 mm to 300 mm dual-wall. Refer to the sizing chart on the product page.
Can you pre-slit the sleeve for assembly?
ID from 0.2 mm to 200 mm flat wall, 3 mm to 300 mm dual-wall. Refer to the sizing chart on the product page.
Engineering Guides & Selection Notes
Related technical articles that help specify this product.
Get pricing for Battery Energy Storage (ESS) Busbar Insulation Sleeve
Attach the drawing with annual volume. We check the material against your duty and tolerance, verify ID / OD / wall / features, and respond with manufacturability notes and pricing.