Determining the allowable current and current capacity of copper busbars.
How to determine the allowable current for copper busbars based on cross-sectional area, plate thickness, and ambient temperature. A document summarizing both a quick reference table and calculations will be provided.
The relationship between the cross-sectional area of copper busbars (thickness × width) and allowable current is one of the most frequently read topics on our website. If you decide based solely on current density guidelines, you may overlook conditions such as ambient temperature, arrangement (vertical/horizontal), and saturation when using multiple bars in parallel, which can lead to overheating incidents. We accept consultations from the design stage and will propose appropriate cross-sectional areas and thicknesses based on the dimensions, current, and usage environment you provide. ＼We also handle consultations like these／ I can't make a decision based only on the quick reference table / I want to know the current distribution when using multiple bars in parallel / I want to know how much it changes between vertical and horizontal arrangements.
basic information
【Scope of Support】 Material: C1100-1/2H (Tough Pitch Copper) Supported Thickness: 3mm to 20mm Maximum Width: 150mm (Processing experience available for 200mm in 10mm, 12mm, and 15mm) Current Density Guidelines: Varies based on ambient temperature and arrangement, calculated individually during consultation Supported Shapes: Single / Multiple parallel items Delivery Time: Approximately 1 week to
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Model number/Brand name
ishigaki-Cu-busbar
Applications/Examples of results
Delivery achievements - Oil-filled transformers and molded transformers - Cubicles, distribution boards, and control panels - Electrical components for industrial machinery requiring high current
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We have been providing copper components to transformer and control panel manufacturers, delivering energy through copper and ensuring safety and security for society. As a result of walking alongside our customers throughout this process, we have become a "copper specialty processing company"! When our customers are truly in need, we respond as quickly as the same day, embodying the spirit of mutual support! ■ Overwhelming inventory ■ Craftsmanship that allows for the fastest processing and youthful, energetic power ■ Strong network with local plating partner companies We can perform various processing methods such as machining, pressing, welding, and brazing. Since we have established a production system for a wide variety of small quantities, ■ Small lots ■ Various sizes ■ Complex shapes can also be handled quickly. We aim to be a company that delivers energy to everyone through copper, and we look forward to your continued support.