Tinned Copper Busbar
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Tinned Copper Busbar

Tinned Copper Busbars are copper conductors coated with a layer of tin to improve their resistance to oxidation, corrosion, and sulfide environments. These busbars are widely used in electrical and electrochemical systems where environmental conditions are demanding — such as marine applications, outdoor switchgear, or high-humidity zones in electrowinning (EW) plants.
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Product Introduction
High conductivity tinned copper busbar
Enhanced Corrosion Resistance for Harsh Environments

Tinned Copper Busbars are copper conductors coated with a layer of tin to improve their resistance to oxidation, corrosion, and sulfide environments. These busbars are widely used in electrical and electrochemical systems where environmental conditions are demanding - such as marine applications, outdoor switchgear, or high-humidity zones in electrowinning (EW) plants. The tin coating not only ensures longer service life but also simplifies soldering and bolted connections.

As a part of PRS's complete electrowinning solution, our tinned copper busbars are tailored for optimal conductivity and reliable mechanical connection between EW cells and power sources.

 

 

Technical Specifications

Item

Specification

Material

Electrolytic Tough Pitch (ETP) Copper (≥99.9%)

Coating Type

Hot-dip tin plating / Electroplated tin

Tin Layer Thickness

3–15 μm (customizable)

Cross-sectional Shape

Flat / Rectangular

Standard Width Range

20 mm – 200 mm

Standard Thickness Range

2 mm – 20 mm

Length

Up to 6 meters or as required

Surface Finish

Smooth, burr-free, uniform tin coating

Conductivity

≥98% IACS (after plating)

Application Voltage

≤1,000 V DC (typical)

Packaging

PE wrap + wooden case / steel frame pallet

 

 

Product Advantages

1

Corrosion in Acidic Atmosphere: In solvent extraction and electrowinning (SX-EW) environments, sulfuric acid mist and high humidity can lead to rapid oxidation of bare copper busbars. Tinned copper busbars provide a reliable anti-corrosion solution, reducing the risk of surface degradation.

2

Welding or Soldering Compatibility: The tin layer significantly improves solderability and makes field connections more secure, especially for custom setups and automated stripping equipment.

3

Electrical Contact Reliability: Tin plating ensures lower contact resistance, maintaining stable conductivity even under fluctuating temperatures and extended use.

4

Maintenance Frequency: Compared to bare copper, tinned copper busbars require less frequent inspection and maintenance, lowering total operating costs.

 

Our After-Sales Service

 Custom Specifications
Clients often require precise cross-section sizes and specific tin thicknesses. PRS provides full customization, including CAD support and sampling services.

 Surface Quality
Poor plating quality can lead to uneven conductivity and early peeling. PRS employs strict quality control with uniform electroplating and post-treatment passivation.

 Lead Time for High Volume Orders
Large projects require mass production without compromising coating quality. Our in-house plating and machining lines ensure both speed and reliability.

Tinned copper busbar for electrowinning

 

 
Packaging & Delivery

Protective Wrapping

PE film or anti-rust paper to prevent oxidation during transit.

Outer Packing

Plywood boxes or steel-frame pallets with shrink wrap.

Marking

Each piece labeled with spec, batch number, and client PO.

Shipping

By sea, air, or express depending on customer request and project urgency.

 

 

FAQ

Q: How does tin plating affect the conductivity of copper busbars?

A: Tin has slightly higher resistivity than copper, but the thin coating (usually <15 μm) does not significantly affect the overall conductivity. It enhances long-term stability and contact reliability.

Q: Is tin plating suitable for high-current applications?

A: Yes. Tinned copper busbars are widely used in high-current DC environments like EW plants, especially where corrosion resistance is critical.

Q: Can PRS supply busbars pre-bent or with drilled holes?

A: Absolutely. We provide complete fabrication services including bending, punching, and chamfering based on your installation drawings.

 

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