Copper Terminal Bars, Copper Neutral Bars & Copper Terminal Lugs
We are one of the leading manufacturers and exporters of Copper Terminal Bars, Copper Neutral Bars, and Copper Terminal Lugs from India.
We have been supplying Copper and Bronze Terminal Bars and Neutral Bars to the global electrical, switchgear, and power distribution industries for many decades. Our products are widely recognized for their high conductivity, mechanical strength, corrosion resistance, and precision tolerances.
Manufactured from 99.9% pure Electrolytic Tough Pitch (ETP) Copper or Oxygen-Free High Conductivity (OFHC) Copper, our Terminal and Neutral Bars ensure optimal current flow and long-term reliability in electrical panels, busbar chambers, earthing systems, and distribution boards.
At Conex Metals, we combine CNC machining, extrusion, forging, stamping, drilling, and bending processes to achieve superior consistency and finish. Our ability to offer custom sizes, hole configurations, plating options, and customer-branded packaging has made us a trusted OEM supplier to global brands across the USA, UK, Europe, Canada, and Australia.
Copper Terminal Bars
Copper Terminal Bars are precision-engineered conductive bars used for power distribution and grounding in electrical panels and switchboards. These bars are manufactured from high-purity ETP Copper (Cu-ETP, ASTM B152, BS EN 13601, JIS H3250, DIN 1787) and can also be supplied in Cu-OF (Oxygen-Free Copper) for high-reliability circuits.
We machine and drill these bars on multi-axis CNC and VMC machines to ensure tight tolerances on pitch, diameter, and flatness.
| Property | Value/Specification |
|---|---|
| Material | ETP Copper (C11000), OFHC Copper (C10200) |
| Standards | ASTM B152 / B187, EN 13601, IS 613, JIS H3250 |
| Conductivity | ≥ 101% IACS |
| Tensile Strength | 210–250 MPa |
| Elongation | ≥ 30% |
| Tolerance | ±0.05 mm (machined holes and pitch) |
| Finish | Natural, Tin Plated, Nickel Plated |
| Turnaround Time | 4–6 Weeks |
| Packing | Custom Label, Shrink-wrapped, Export Carton or Wooden Box |
Applications: Electrical control panels, switchgear, transformers, busbar systems, grounding assemblies.
Copper Neutral Bars
Copper Neutral Bars are designed for panel boards and electrical enclosures to provide safe neutral and earth connections. Available in multiple configurations (single row, double row, modular blocks), these bars are typically Tin Plated for corrosion resistance and come with brass or stainless steel screws.
| Type | Size Range (mm) | Screw Size | Finish |
|---|---|---|---|
| Single Row | 6×12 to 10×50 | M3–M6 | Tin/Nickel |
| Double Row | 8×20 to 10×60 | M3–M8 | Tin/Nickel |
| Multi-Row | Custom | As per design | Customized |
Features:
Excellent electrical contact, easy termination, long-life performance in humid or corrosive environments.
Copper Terminal Lugs
Copper Terminal Lugs (also known as Copper Cable Lugs or Crimp Terminals) provide secure mechanical and electrical connection between cable conductors and terminal blocks.
We produce Seamless, Forged, and Machined Lugs in accordance with IS 8309, BS 4579, DIN 46234, UL 486A/B standards, with Tin or Nickel plating for corrosion protection.
| Type | Cable Size Range (mm²) | Material | Finish |
|---|---|---|---|
| Crimp Type | 1.5–300 mm² | ETP Copper | Tin |
| Compression Type | 10–500 mm² | Cu-OF | Nickel |
| Forged Heavy Duty | Up to 1000 mm² | CuCrZr Alloy | Silver |
Copper & Bronze Terminal Bars and Neutral Bars
When extra hardness and wear resistance are required, we manufacture Bronze Terminal Bars using CDA 954 (Aluminium Bronze), CDA 955, and Phosphor Bronze (C51000, C54400) alloys. These materials combine good electrical conductivity with high mechanical strength, ideal for marine, mining, and heavy-duty switchgear applications.
| Material | Conductivity (% IACS) | Tensile Strength (MPa) | Typical Use |
|---|---|---|---|
| Phosphor Bronze C51000 | 15–20 | 450 | Neutral bars for heavy switchgear |
| Aluminium Bronze C95400 | 20–25 | 600 | High-load terminal connectors |
| Copper C11000 | 101 | 210 | Standard panel bars |
Copper Panel Board Terminals
Copper Panel Board Terminals form the critical conductive interface between the main busbar and the external wiring system.
We produce both threaded and unthreaded variants, with options for stud type, clamp type, and bolt-on terminals. These are machined on CNC turning centers and optionally silver-plated for enhanced conductivity.
Industries Served:
Electrical Distribution Boards, Renewable Energy Systems, Control Panels, Power Transformers, UPS Systems, Railway Electrification, and Switchgear Manufacturing.
Manufacturing Process and Machinery
Raw Material: ETP/OFHC Copper Rods, Bars, or Extrusions
Processes: Cutting → Drilling → Tapping → Bending → Surface Treatment → Plating → Inspection
Machinery: CNC/VMC machining centers, extrusion presses, automatic drill/tap machines, bending jigs, polishing drums, plating tanks (Tin, Nickel, Silver).
Inspection Tools: Vernier calipers, go/no-go gauges, torque testers, conductivity testers.
Quality Assurance: 100% visual and dimensional inspection, RoHS compliance, and third-party inspection on request.
Performance Metrics
| Parameter | Typical Value |
|---|---|
| Electrical Conductivity | ≥ 101% IACS (Cu), ≥ 20% (Bronze) |
| Corrosion Resistance | Excellent |
| Temperature Range | −40°C to +180°C |
| Plating Adhesion | 100% adhesion test |
| Mechanical Torque Strength | 2–5 Nm (depending on screw size) |
Frequently Asked Questions (FAQ)
What is the difference between Copper Terminal Bars and Neutral Bars?
Terminal Bars carry live or phase connections, while Neutral Bars provide return/grounding paths.Which Copper grade is used?
Typically ETP Copper (C11000), OFHC (C10200), or C12200 (DHP Copper).Are these RoHS compliant?
Yes, all products comply with RoHS and REACH regulations.Do you offer Tin or Nickel plating?
Yes, Tin, Nickel, and Silver plating are available.Can you customize hole patterns?
Absolutely. Hole spacing, diameter, and alignment can be customized as per drawings.Do you export to the USA and Europe?
Yes, over 80% of our production is exported to North America, Europe, and Australia.What is your delivery lead time?
Standard turnaround time is 4–6 weeks depending on quantity and finish.What surface finishes do you provide?
Natural, Tin Plated, Nickel Plated, Silver Plated, or Anodized.Do you supply with screws or terminals?
Yes, we provide with Brass or Stainless Steel screws as per requirement.Can you pack with customer labels or barcodes?
Yes, private labeling and barcoding are available.Do you provide technical drawings?
Yes, 2D/3D CAD drawings are prepared for approval before production.Are the bars suitable for marine environments?
Yes, especially Bronze and Nickel-plated variants.Do you test for electrical conductivity?
Yes, 100% batch testing is done with calibrated meters.What plating thickness do you offer?
Tin 5–10 µm, Nickel 3–5 µm, Silver 5–8 µm.Can you meet UL or CE compliance?
Yes, we produce to international standards and can arrange UL-approved testing on request.
Customer Testimonials
John Peterson, New Jersey, USA
“We’ve sourced Copper Neutral Bars from Conex Metals for years. Their machining accuracy and plating quality are consistently superior to other suppliers.”
Mark Davis, Southampton, UK
“Excellent communication, fast turnaround, and impeccable packaging. Our panels have never had a single quality issue since switching to Conex.”
Why Choose Us
30+ years of manufacturing and export experience
Flexible lead times and small-batch customization
Engineering support for drawings and design optimization
In-house plating and inspection for consistent quality
Global exposure, excellent communication, and packaging flexibility
ISO 9001 certified with full traceability and material test reports
Packaging & Shipping
Individually poly-bagged and shrink-wrapped
Export-grade corrugated cartons or fumigated wooden boxes
Palletized for sea or air shipments
Labels and barcodes customized per customer requirement
Glossary of Terms
| Term | Definition |
|---|---|
| IACS | International Annealed Copper Standard – unit for measuring electrical conductivity. |
| ETP Copper | Electrolytic Tough Pitch Copper, high conductivity copper grade. |
| OFHC Copper | Oxygen-Free High Conductivity Copper with superior purity. |
| Busbar | Conductive metal bar used for power distribution. |
| Tin Plating | Protective coating improving corrosion resistance and solderability. |
| Torque Strength | Mechanical force a screw joint can withstand before failure. |
Related Terms
Copper Busbar Manufacturers | Copper Neutral Bar Suppliers | Copper Terminal Blocks | Copper Lug Exporters | Tin Plated Copper Bars | ETP Copper Machined Components | OFHC Copper Grounding Bars | Bronze Earthing Strips | Electrical Panel Terminals | Custom Copper Connectors
Call to Action (CTA)
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📧 Email: sales@conexscrews.com |
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