Copper Busbar
Machined ETP copper busbars to panel and switchgear drawings.
Copper Busbar
Vajra International · Image coming soon
What it is
Electrolytic tough-pitch copper busbars cut, punched and bent to drawing, with tinning and insulation options for current-carrying applications.
Applications
Materials
Finishes
Buying copper busbar — answered
Practical answers for procurement, engineering and EPC teams — covering specification, standards, finish, lead time and export logistics.
ETP (electrolytic tough pitch, C11000) has the highest conductivity (≥100 % IACS) and is the standard for unbrazed busbars. DHP (deoxidized high phosphorous) is preferred where the busbar will be brazed, because oxygen-free deoxidisation prevents hydrogen embrittlement. Specify ETP for panel switchgear; DHP if your fabrication involves brazing.
Mostly corrosion — the contact resistance at bolted joints stays stable over years. Current rating in still air is unchanged. In humid or polluted environments tinning preserves the joint torque-vs-resistance relationship, which protects against long-term heating drift.
For 4000 A continuous in still indoor air, a typical sizing is 2 × 100×10 mm tinned copper bars per phase, with a temperature rise of ≤65 K above 35 °C ambient. The exact sizing depends on enclosure ventilation, bar spacing and the harmonic content. We size on request against IEC 61439 type-test data.
Both options are available. Factory-applied sleeves arrive with the busbar BOQ-tagged and ready to install — saves site labour and ensures consistent quality. Site application is fine for small jobs but harder to do well at 4 kV+ class.
Standard cut-punch-bend busbars ship in 2–3 weeks. Complex assemblies (multi-bend, riser bars, off-set joints with brackets) take 3–4 weeks. We share a CAD-step file for verification before machining so there's no rework at panel build.
Manufacturing & Surface Treatment
All products are manufactured at Vajra's Howrah facility under ISO 9001:2015 quality management. In-house roll-forming, welding, galvanizing and testing — without sub-contractor dependency — ensures consistent dimensional accuracy and surface quality across export orders.
Precision Roll-Forming
CNC roll-forming lines capable of ±0.1 mm dimensional tolerance on MS, GI, SS, and aluminium sections.
Hot-Dip Galvanizing
In-house HDG plant conforming to ASTM A123 / IS 2629. Average coating: 85–140 µm. Pre-treatment: alkaline degreasing → pickling → fluxing.
Welding & Fabrication
MIG, TIG, SAW welding. Coded welders under ASME IX / IS 2825 qualification. Weld inspection by UT / DPT available.
Surface Treatment
Hot-dip galvanizing · Pre-galvanized GI · Powder coating (Tribo gun, 60–80 µm DFT) · Mill finish · Chromate passivation.
Available Material Grades
Surface Treatment Options
Manufacturing Tolerances
| Length tolerance | ±3 mm on standard lengths |
| Width tolerance | ±1 mm |
| Thickness tolerance | ±0.15 mm (IS 1079) |
| Straightness | ≤ 1 mm per 1 m |
| Galvanizing coat | 85 µm min (ASTM A123) |
| Squareness | ≤ 1 mm per 100 mm |
Global Supply & Export Documentation
Copper Busbar is exported under a documented supply chain — from factory test certification through customs clearance to door delivery. All shipments are packed to sea-freight standards with full export documentation prepared in-house.
Incoterms Available
- FOB Kolkata
- CIF Port of Destination
- CFR
- EXW Howrah Works
- DDP (on request)
Export Documents
- Commercial Invoice & Packing List
- Bill of Lading / Airway Bill
- Certificate of Origin (CoO)
- Inspection Certificate
- Phytosanitary Certificate (where applicable)
- MSDS / Material Safety Data Sheet
- Test Reports & Mill Certificates
Packaging Standards
- Wooden crate — sea-freight grade
- ISPM-15 heat-treated pallets
- Steel-strapped bales for structural sections
- VCI poly wrapping for corrosion protection
- Moisture-absorbing desiccant sachets
Compliance & Standards
Manufactured and tested to:
ISO 9001:2015 quality management system. Third-party inspection available on request (SGS, Bureau Veritas, TÜV).
Lead time: Standard stock items ship within 7–10 working days after order confirmation. Custom fabricated quantities: 15–25 working days. Express production available — contact our export desk.
Countries importing Busbars from India
Copper Busbars & Strips is in active demand across these markets. Click a country to see named importers, city-level volumes, and customs shipment intelligence.
GCC infrastructure, energy, and data-centre build-out with established Indian-origin supply lanes.
View marketContainer-load supply for rail, power, and industrial contractors — largest cable tray import market in Asia.
View marketARAMCO, Vision 2030 mega-projects and GCC infrastructure drive enormous demand for structured cable management and earthing.
View marketPower sector expansion, oil & gas infrastructure, and West Africa distribution hub driving consistent demand.
View marketLNG infrastructure, post-World Cup development, and smart city projects driving cable management and steel demand.
View marketEast Africa's procurement hub — cable glands, earthing, and cable trays for power and data centre projects.
View marketRapid industrial growth — garment EPZs, power plants, and solar expansion driving cable management imports.
View marketSectors That Specify This Product
This product line is specified by procurement and engineering teams across the following sectors. Each industry page lists the specific product requirements, typical standards, and export documentation relevant to that buyer profile.
Application engineering support: Our technical sales team provides product selection, load calculation references, and specification assistance for EPC, PMC, and procurement teams. Available for onsite consultation in major project cities.
Download Technical Documentation
Technical Datasheet
PDF · Engineering specifications · Export-ready
Complete engineering datasheet for Copper Busbar — dimensional data, material grades, tolerances, applicable standards, and export compliance information.
Free · No registration required · Busbars datasheet
Request a quote for copper busbar.
Send drawings, a BOQ, or a simple description. You'll get a structured quotation covering specification, finish, lead time and Incoterms — from the manufacturer, not a middleman.
- MTC · COO · inspection reports
- ±0.01 mm precision · in-house QA
- FOB · CIF · CFR to all major ports