High-Conductivity Tin-Plated Copper Busbars for Switchgear

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Product Specifications
Name： Tin-Plated Copper Busbar for Switchgear
Standard： ASTM B187 / B152, UNS C11000, RoHS Compliant, REACH Compliant
Material： C11000 (ETP Copper, ≥99.9% Cu) with Electrolytic Tin Plating (5-20μm thickness)
Surface： Uniform Bright Tin Finish, Optional Pre-Drilled Holes
Width： 20mm – 300mm
Thickness： 3mm – 20mm
Length： 1000mm – 4000mm (custom cut-to-length and hole patterns available)
Product Features: Exceptional electrical conductivity with minimal contact resistance · Superior corrosion and oxidation protection from tin plating · Excellent solderability and long-term stability · High mechanical strength for secure mounting · Low voltage drop in high-current applications · Enhanced durability in humid or chemical environments · Easy bending and fabrication
Application Field: Medium and low-voltage switchgear cabinets, Power distribution panels and MCCs, Industrial control systems, Data center power rails, Renewable energy inverters and battery connections, Transformer and generator bus systems, Railway electrification, Marine electrical panels, Building infrastructure grounding

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Tin-Plated Copper Busbar for Switchgear – Process & Quality Assurance Statement
Our tin-plated copper busbars are specifically tailored for switchgear applications, combining the superior conductivity of pure copper with a robust tin coating to ensure reliable performance and extended service life in demanding electrical environments.

Key process features

Manufacturing integrates precision rolling with controlled electroplating for consistent quality:
●Copper Base Production: High-purity electrolytic copper is hot rolled into flat bars, followed by cold reduction for accurate thickness and smooth surfaces.
●Surface Preparation: Thorough cleaning and activation remove oxides and prepare the copper for optimal plating adhesion.
●Electro-Tin Plating: Uniform tin layer is deposited in automated baths, with thickness monitored for even coverage and bright finish.
●Rinsing & Drying: Multiple rinses eliminate residues, followed by controlled drying to prevent defects.
●Fabrication: CNC punching or drilling adds mounting holes as specified; edges are deburred for safety.
●Final Inspection & Protection: Each bar undergoes visual and dimensional checks before protective packaging.
●Secure Shipping: Bars are interleaved and bundled to arrive in perfect condition worldwide.

Quality control system

● Complete traceability from copper cathode to finished plated busbar
● Test reports covering conductivity, plating thickness, and dimensions included with every order
● Sample retention ≥3 years for third-party validation (SGS, BV, TÜV, etc.)
● 100% inspection of vital characteristics:
• Base copper purity and conductivity (eddy current testing)
• Tin plating thickness and adhesion (X-ray fluorescence + bend testing)
• Dimensional precision (laser measurement; typical tolerance ±0.2mm)
• Surface uniformity (visual and microscopic examination)
• Mechanical properties (tensile and bend testing on samples)
● Internal standards exceed ASTM B187 requirements. Typical performance: Conductivity >100% IACS, Excellent resistance to oxidation and thermal cycling, Strong plating bond with no peeling under stress.
● ISO 9001:2015 certified processes guarantee every tin-plated copper busbar provides the safe, efficient, and durable connectivity your switchgear installations require.