Copper neutral links carries return current in power and control panels. It keeps the neutral circuit stable and distributes load evenly across all conductors.
Each terminal holds the cable with clean-thread screws and balanced torque. That stops heat buildup and ensures a solid electrical path during long duty cycles.
Copper offers higher electrical conductivity than brass and far better performance than aluminum. It lowers voltage drop, resists oxidation, and maintains contact integrity under load.
Neutral bars arrive drilled, tapped, and ready for installation on insulated bases. Layouts match the customer drawing for hole pitch, thread size, and bar length.
We supply custom copper neutral bars to OEMs, Control panel manufacturers, and distributors in the USA. Bulk quantities stay stocked with verified material, plating, and consistent machining across every lot.
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A copper neutral link connects and balances return current inside distribution and control panels. It links every neutral cable into a single conductive path and keeps the system reference stable.
The bar mounts inside control panel board, switchgear, MCB panels, and electrical distribution boards. Each hole clamps a cable and locks it under fixed torque, so contact resistance stays low through the panel’s life.
Copper’s high conductivity and thermal strength allow the bar to handle higher current density than aluminum neutral links or brass neutral links of equal size. That makes it ideal for OEM panels that need compact, reliable neutral links with long service life.
In grounded designs, the copper neutral bar also bonds to the earth bar or chassis when specified by the electrical code. This ensures a safe return path during fault conditions and keeps protection devices operating within rated time.
We manufacture copper neutral bars from high-conductivity electrical grades. This grade is designed for stable current flow and repeat machining accuracy. The standard material is ETP Copper (C11000), known for more than 100% IACS conductivity and strong thread holding. We also use OFHC Copper (C10200), DHP Copper (C12200), and Tough Pitch Copper (C12500) when buyers specify oxygen control or weld compatibility. Each bar machines clean with sharp edges, flat faces, and consistent grain.
Surface finish depends on board requirement. Bare copper delivers maximum conductivity. Tin plating prevents oxidation in outdoor conditions. Nickel plating offers surface hardness and long-term corrosion resistance in industrial panels. Each finish is measured and verified during inspection.
All materials comply with RoHS for restricted substances. Electrical and mechanical tests verify thread integrity, torque strength, and dimensional repeatability before packing.
| Property | Copper Neutral Link | Brass Neutral Link | Aluminum Neutral Link |
|---|---|---|---|
| Common Grades | C11000 (ETP), C10200 (OFHC), C12200 (DHP), C12500 (Tough Pitch) | C36000, CZ121 | 6061-T6, 6101-T |
| Electrical Conductivity (IACS %) | 97–100 | 25–30 | 40–45 |
| Machinability | Moderate | Excellent | Fair |
| Thread Strength | High | High | Low |
| Corrosion Resistance | Excellent with tin and nickel plating | Good | Fair, needs coating |
| Oxidation Tendency | Low when plated | Low | High |
| Mechanical Strength | High | Medium | Low |
| Relative Material Cost | Higher than brass, lower than copper-silver alloys | Moderate | Lowest |
| Weight (Density g/cm³) | 8.9 | 8.5 | 2.7 |
| Typical Use | High-current boards, industrial switchgear, energy panels | MCB boards, domestic panels | Lightweight enclosures, cost-sensitive assemblies |
Copper offers the best conductivity and heat stability. Brass provides easier machining with moderate current capacity. Aluminum reduces weight and cost but needs larger cross-section for equal current rating.
Copper neutral bars come in multiple hole counts and thread types to match different panel layouts. Each hole and thread follows standard torque ratings for electrical screws. Bars mount either on insulated bases or directly to the panel chassis depending on grounding design.
| Specification | Details |
|---|---|
| Hole Count Options | 6-way, 8-way, 12-way, 17-way, 25-way, or custom layout as per requirements |
| Thread Type (Metric) | M3, M3.5, M4, M5 |
| Thread Type (Imperial) | #6-32, #8-32 |
| Mounting Type | Insulated base or direct panel mount |
| Screw Type | Slotted, Phillips, and hex drive based on specification |
| Hole Pitch | Adjustable to match panel spacing and cable gauge |
| Bar Length Range | 40 mm to 300 mm standard, longer on request |
| Finishing Options | Plain copper, tin plated, and nickel plated for corrosion control |
| Customization | OEM-specific hole pattern, mounting slots, and plating options |
We manufacture OEM custom copper neutral bars to your exact drawing, hole layout, and thread requirement. Each bar is machined from high-conductivity copper and finished for long service life. Orders move through controlled production with full inspection and export packing.
Bulk quantity pricing available. Request Quote from a trusted copper neutral bar supplier in the USA.
