We have compiled a list of manufacturers, distributors, product information, reference prices, and rankings for Copper Bar.
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Copper Bar Product List and Ranking from 10 Manufacturers, Suppliers and Companies

Last Updated： Aggregation Period:Sep 24, 2025～Oct 21, 2025
This ranking is based on the number of page views on our site.

Copper Bar Manufacturer, Suppliers and Company Rankings

Last Updated： Aggregation Period:Sep 24, 2025～Oct 21, 2025
This ranking is based on the number of page views on our site.

  1. 石垣商店 Aichi//Industrial Electrical Equipment
  2. 篠原電機 Osaka//others
  3. 和田製作所 Hiroshima//Manufacturing and processing contract
  4. 4 エイシンインターナショナル Osaka//Manufacturing and processing contract
  5. 5 イートン・エレクトリック・ジャパン Osaka//Industrial Electrical Equipment
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Copper Bar Product ranking

Last Updated： Aggregation Period:Sep 24, 2025～Oct 21, 2025
This ranking is based on the number of page views on our site.

  1. Copper bar / crossing bar branch bus copper bar 篠原電機
  2. Busbar, busbar, copper bar 和田製作所
  3. Specialized in processing copper busbars! We are here to assist with power connections using copper. 石垣商店
  4. To customers who manufacture copper products in-house for control panels and distribution boards. エイシンインターナショナル
  5. 4 Flexible Copper Bar (Electrostatic Wire) CU-BAND イートン・エレクトリック・ジャパン

Copper Bar Product List

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To customers who manufacture copper products in-house for control panels and distribution boards.

To customers who manufacture copper products in-house for control panels and distribution boards.

We assist in reducing labor hours and costs through the outsourcing of copper processing.

Eishin International supports your manufacturing with copper processing. ■Features■ Utilizing a network derived from trading companies, we directly import copper materials from overseas (domestic materials can also be procured). To meet the demands of domestic customers for copper processing and to enhance service with shorter delivery times, we process at two domestic locations (Osaka Prefecture and Aichi Prefecture) within the Eishin Group. We have introduced the latest dedicated machines for copper busbar processing from Germany and promote digital transformation (DX) to address the shortage of personnel in the industry and among customers. We handle everything from mass-produced items for power distribution equipment to custom-made products, as well as tin, nickel, and other plating treatments. Our company provides comprehensive services for electrical copper in the power distribution industry and offers a one-stop solution for management through the outsourcing of copper bar processing! ■Benefits of Outsourcing Copper Bar Processing■ 1. Liberation from material procurement, storage, and financial management. 2. Ability to perform processing that cannot be done with in-house equipment, eliminating the need for plating treatment. 3. Savings in processing time, resolution of personnel shortages, and freedom from processing errors. As a result, we can allocate personnel to assembly wiring and inspection, thereby improving productivity.

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  • Non-ferrous metals

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Key points for selecting the "materials" of copper bars to achieve cost reduction.

Key points for selecting the "materials" of copper bars to achieve cost reduction.

Selection knowledge for copper bars (main bars and branch bars): Choose with material properties in mind! Increase efficiency!

【Before】 ■Types of copper materials used in copper bars When using copper bars, while there may be a selection of surface treatments such as nickel plating or tin plating, there has been no consideration of the materials of the copper itself. As a result, we have been selecting and adopting copper materials without knowing whether they are suitable for the operating environment of our panels. ↓ 【After】 ■Types of copper materials used in copper bars and conductivity When selecting copper bars, determining the materials based on the internationally accepted annealed standard soft copper conductivity, known as IACS, allows for efficient current flow. While there may not be much difference in standard copper bars, it is possible to achieve energy savings by selecting custom copper bars designed to carry high-capacity power. *For more details, please refer to the catalog or feel free to contact us.

  • others
  • Control Panel

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Key points for selecting the "dimensions" of custom copper bars to achieve cost reduction.

Key points for selecting the "dimensions" of custom copper bars to achieve cost reduction.

Knowledge for Selecting Copper Bars (Main Bars and Branch Bars): Reducing processing costs and overall cost reduction!

【Before】 When determining the dimensions of copper bars used for carrying large currents, such as in power distribution boards, there were no clear internal standards, and we were directly repurposing from past drawings. The large cross-sectional area copper bars were not standard products from manufacturers, and we were ordering them as custom items each time, which led to high material costs for copper and processing costs for specified dimensions, becoming a problem. ↓ 【After】 The key points for selecting custom copper bars are that referring to the size charts from material manufacturers can help reduce processing costs. Since the dimensions of copper bars intended for carrying current do not require high precision in material dimensions, it is efficient to design them to match the original material dimensions as closely as possible. Although there is a standard length for each material, determining the dimensions of copper bars that do not require complex machining can achieve cost reductions. *For more details, please refer to the catalog or feel free to contact us.*

  • Control Panel
  • others

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Key points for selecting the "cross-sectional area" of copper bars to achieve cost reduction.

Key points for selecting the "cross-sectional area" of copper bars to achieve cost reduction.

Knowledge for Selecting Copper Bars (Main Bars and Branch Bars) - Ensuring Safety by Selecting According to Official Guidelines

【Before】 The selection of the cross-sectional area of the copper bar based on the flowing current has been done using the catalog values from copper bar manufacturers. However, since the allowable current values differ among manufacturers even for the same cross-sectional area, we have prioritized safety by selecting larger cross-sectional areas of copper bars, which has led to increased material costs. ↓ 【After】 When determining the cross-sectional area of the copper bar based on the rated current, it is common to refer to the Japan Electric Power Control System Industry Association standard JSIA303 for cabinet-type distribution boards (III04-2). When prioritizing safety, it is possible to apply the above formula to select the necessary cross-sectional area. *For more details, please refer to the catalog or feel free to contact us.

  • Control Panel
  • others

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Key points for selecting the "height" and "width" of copper bars to achieve cost reduction.

Key points for selecting the "height" and "width" of copper bars to achieve cost reduction.

Selection Knowledge for Copper Bars (Main Bars and Branch Bars): Choose Standard Product Dimensions for Higher Quality Products!

【Before】 The copper bar determines its cross-sectional area (height × width) based on the flowing electrical capacity, but the "height" and "width" that determine the cross-sectional area are fixed combinations of standard dimensions. If the copper bar is designed outside the "height" and "width" specified in the table above, it will deviate from the standard product, resulting in increased costs and delivery times. ↓ 【After】 Once the required cross-sectional area of the copper bar is determined, the next step is to decide on the dimensions of the copper bar to be used. At this point, among the standard dimensions (height × width), for a "height" of 3mm, the "width" can be 12mm or 15mm; for a "height" of 4mm, the "width" can be 12mm, 15mm, or 20mm, etc. By selecting from standard copper bar dimensions, it is possible to achieve cost reduction and shortened delivery times for material procurement from the design stage. *For more details, please refer to the catalog or feel free to contact us.*

  • Control Panel

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Key points for selecting the "length" of copper bars to achieve cost reduction.

Key points for selecting the "length" of copper bars to achieve cost reduction.

【Knowledge for Selecting Copper Bars (Main Bars and Branch Bars)】 The key is the length that improves the yield rate!

【Before】 The criteria for selecting copper bars during the design of distribution boards and control panels is based on the current capacity (A) flowing through them, which tends to give the most weight to the cross-sectional area (width × height). Therefore, the "length" of the copper bars is often less considered, leading to an increase in the overall cost of the panel. Among them, the copper bars connected to the main breaker have a relatively large cross-sectional area, and three bars are required for three-phase systems, making it necessary to optimize the "length" of the copper bars themselves. ↓ 【After】 By understanding the "length" dimensions of standard raw material (at the time of purchase) copper bars, it becomes possible to design the optimal "length" of copper bars. Particularly when copper bars exceeding 600mm in "length" are required, it becomes difficult to obtain the three necessary copper bars for three-phase systems from a single raw material copper bar. By considering the number of bars obtained and the yield rate from the design stage, the cost of conventional copper bars was reduced by one-fourth. *For more details, please refer to the catalog or feel free to contact us.*

  • Control Panel

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Busbar, busbar, copper bar

Busbar, busbar, copper bar

From prototype to mass production using C1100 tough pitch copper and C1020 oxygen-free copper!

We will prototype and mass-produce busbars, which are conductors for conducting electric current, from copper plates and copper round bars. [The photo is an example.] Please inquire about other shapes. We have experience with plate thicknesses up to 20 mm. By consulting with us from the prototype stage, we can provide proposals that take into account issues related to mass production processing. We can also perform surface treatments such as tin plating and nickel plating, which are post-processing steps after press processing, and deliver the finished products. ■ Copper Materials These are materials with extensive processing experience at Wada Seisakusho. - C1100 (Tough Pitch Copper) - C1020 (Oxygen-Free Copper) - C2801 (Brass) - HSM (Copper Wire)

  • Other energy equipment
  • Other electronic parts

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Copper Parts Processing Example: Copper Bar

Copper Parts Processing Example: Copper Bar

For the power distribution and control panel industry! We provide original parts made of copper materials!

This is a case study from Just Products, a manufacturer specializing in copper bars located in Kasugai City, Aichi Prefecture. The characteristics of copper make it difficult to process compared to iron and stainless steel, and the material is expensive. Despite being a metal with excellent properties, the reality is that there are few factories skilled in processing copper due to its unique characteristics. Just Products is committed to processing copper and considers it a strength. [Case Study] - Copper bars assembled in an orderly horizontal and vertical manner - Innovations to prevent bending marks *For more details, please refer to the PDF document or feel free to contact us.

  • Other electronic parts
  • Contract manufacturing

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Copper Processing and Flow

Copper Processing and Flow

Pursuing absolute reliability! Introducing Just Products' copper processing and flow.

The characteristics of copper are that it is more difficult to process compared to iron and stainless steel, and the material is expensive. Despite being a metal with very excellent properties, the reality is that there are few factories skilled in processing copper due to its unique characteristics. Just Products is committed to the processing of copper and considers it a strength. For hole drilling and bending, it is not enough for the dimensions indicated in the drawings to be correct. Copper bars are "conductors of electricity." We consider suitable processing methods that do not put undue stress on the material. We carefully examine each processing method to ensure that it can fulfill its function as a conductor until the electrical equipment has completed its role. 【Processing Flow】 ■ Machining ■ Bending ■ Drilling ■ In-process inspection after processing ■ Plating completed *For more details, please refer to the PDF document or feel free to contact us.

  • Other electronic parts
  • Contract manufacturing
  • Processing Contract

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Specialized in processing copper busbars! We are here to assist with power connections using copper.

Specialized in processing copper busbars! We are here to assist with power connections using copper.

Leave the manufacturing of copper bars (busbars) for transformers, distribution boards, and control panels in the power distribution industry to us.

Our factory boasts industry-leading expertise and quality in the manufacturing of copper bars (busbars) for transformers, switchgear, and control panels in the power distribution industry. Our products, which are "specialized in copper," are essential for the efficient and safe supply of electricity. 【Our Strengths】 - Custom-made products tailored to customer requirements. - Use of high-quality copper materials, ensuring the reliability of electrical equipment. - Proven track record of supplying major manufacturers. - Offering suitable materials with thicknesses ranging from 3mm to 20mm. 【Message to Our Customers】 The stability and efficiency of power infrastructure support the quality of our lives and the growth of industries. We contribute to the overall development of society through reliable copper bar products. With a commitment to technological innovation and quality, we strongly support our customers in building their power supply systems.

  • Transformers

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What are the benefits of hiring a copper processing specialist, and why are they chosen?

What are the benefits of hiring a copper processing specialist, and why are they chosen?

What are the reasons that Ishigaki Shoten Co., Ltd. is chosen for transforming "impossible" into "possible" with innovative copper bar processing?

Ishigaki Shoten Co., Ltd. is an expert in copper bar (bus bar) processing that supports our customers' challenges. We realize various copper bar processing, from the smallest parts to large power receiving equipment. ■Features■ 【Industry Expertise】 Specialized in product parts for power industry receiving equipment and storage facilities! 【Copper Material Procurement】 Strong relationships with manufacturers and wholesalers, leveraging our background as a wholesaler to procure high-purity copper! 【Custom Orders】 Capable of handling special shapes through general-purpose machining by skilled artisans! 【High Quality & Precision】 Providing high-quality products born from advanced technology through the manufacturing of industrial battery and power supply components! ■Track Record■ 【Strong Trust from Listed Companies】 Boasting numerous transaction records, our latest copper processing technology is highly regarded. ■Strengths■ 【Experience in Large Product Deliveries】 Rich experience in manufacturing large items requiring precision processing, such as large power receiving equipment. 【Cost and Speed】 Adjusting the balance of delivery time, cost, and precision according to customer needs, achieving cost optimization while preventing excessive quality. 【Integrated Production】 Comprehensive response from procurement to processing, plating, and quality control through integrated production. *For more details, please refer to the downloadable materials.

  • Transformers

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【Technical Information】What are the benefits of copper rolled screws?

【Technical Information】What are the benefits of copper rolled screws?

The importance of copper round bar processing technology and its quality control.

The processing of copper round bars requires precise machining technology, particularly focusing on the use of 5-axis machining centers and NC lathes. In screw machining, there are two types: rolling and cutting, each with its own advantages, but some methods may take longer. Additionally, strict quality control is implemented, and only products that pass inspections using ring gauges are shipped. This ensures the high quality of copper products. 'Precision Processing of Copper Round Bars: Selection of Technology and Its Importance' 'Technology of Copper Bar Screw Machining: Differences Between Rolling and Cutting' 'Quality Control in Copper Bar Screw Machining: Importance of Inspection' *For more details, please refer to the PDF document or feel free to contact us.

  • Transformers

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Technical Data: Sensory Differences and Performance of Pure Copper and Chromium Copper During Processing

Technical Data: Sensory Differences and Performance of Pure Copper and Chromium Copper During Processing

High-Quality Copper Processing Technology and Challenges by Ishigaki Store

"Challenges of Pure Copper (C1100) Processing and Ishigaki Shoten's Unique Technology" "Issues in Chrome Copper Processing and Ishigaki Shoten's Solutions" "Ishigaki Shoten's Copper Processing Technology Boasting 70 Years of Experience" *For more details, please refer to the PDF document or feel free to contact us.*

  • Transformers

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【Technical Information】What is one of the welding methods called "fusion welding"? The technology of copper welding!

【Technical Information】What is one of the welding methods called "fusion welding"? The technology of copper welding!

TIG Welding at Ishigaki Store: Mastering the Precision Techniques of Copper Welding

■Fusion connection: Advanced welding technology for copper ■Characteristics and strengths of TIG welding ■Challenges and solutions in copper welding *For more details, please refer to the PDF document or feel free to contact us.*

  • Transformers

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Technical Data: The Depth of Copper Processing: The Technology and Experience of Ishigaki Shoten

Technical Data: The Depth of Copper Processing: The Technology and Experience of Ishigaki Shoten

Ishigaki Store reveals the techniques and challenges of copper processing.

The copper processing at Ishigaki Shoten is based on a deep understanding and technology of the unique properties of C1100 tough pitch copper. During processing, the material's flexibility, high density, and ductility present significant challenges. In particular, during press processing, the material's stickiness and the adhesion of the mold due to heat are critical issues, while in machining, managing the high thermal conductivity and burr generation is essential. Ishigaki Shoten overcomes these challenges to provide high-quality copper products. The difficulties of copper processing and the characteristics of C1100 Challenges in press processing and machining Techniques for cutting and lathe processing *For more details, please refer to the PDF materials or feel free to contact us.

  • Transformers

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