【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.*
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**Effect** Panel manufacturers that produce control panels and distribution boards cut copper bars from raw materials for use. The standard lengths of commercially available copper bars are 1000mm, 1250mm, and 1660mm. By designing the copper bars used for the main breaker to be of a length that maximizes yield and allows for three pieces to be obtained, significant cost reductions for copper bars can be achieved, leading to lower costs for control panels and distribution boards. *When using copper bars longer than 600mm, selecting the length based on the number of pieces obtainable and the yield rate can lead to cost savings.* *For more details, please refer to the catalog or feel free to contact us.*
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For more details, please refer to the catalog or feel free to contact us.
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Hoshimoto Co., Ltd. is a manufacturer that has been producing and selling industrial handles, locks, hinges, handles, copper busbars, and pressed, machined, and cast products for control panels, cubicles, and distribution boards since its establishment. Leveraging the characteristics of manufacturing and sales, we are committed to product development with the motto of creating what is needed. In addition to standard catalog items, we also respond to commissioned processing based on our available equipment (press machines, benders, NC lathes, machining centers, header machines, zinc die casting, milling machines, etc.) as needed. We have obtained ISO 9001:2000 and ISO 14001 certification.