How thick is the copper strip of the bus connector

The thickness of a copper busbar typically ranges from 0.5 mm to over 5 mm depending on the current load and application.Typical Thickness RangesLow-current applications: 0.5 mm to 1 mmMedium-current circuits: 1 mm to 3 mmHigh-current industrial applications: 3 mm to 5 mm or more The exact thickness depends on the current-carrying requirements, heat dissipation, and mechanical strength needed for the busbar. Thicker copper reduces electrical resistance, improves thermal performance, and ensures reliable operation without overheating .Material ConsiderationsCopper busbars are usually made from high-purity copper such as:Electrolytic Tough Pitch (ETP) Copper (C11000): 99.9% pure, widely used for general applicationsOxygen-Free High-Conductivity (OFHC) Copper (C10200): Higher conductivity and oxidation resistance, preferred for demanding environments Design FactorsWhen selecting the thickness of a busbar, engineers consider:Current rating: Higher currents require thicker barsCross-sectional area: Determines ampacity and thermal performanceShape and mounting style: Flat strips, solid bars, or hollow tubes affect cooling and mechanical rigidity Application type: PCB busbars, battery connections, or industrial switchgear may have different thickness requirements Practical ExampleFor a PCB busbar handling moderate currents, a thickness of 1–3 mm is common, while industrial busbars in substations or high-power equipment may exceed 5 mm to safely carry thousands of amperes . In summary, the copper strip thickness of a bus connector is chosen based on current load, thermal management, and mechanical requirements, with typical values ranging from 0.5 mm for low-power circuits to over 5 mm for high-current industrial applications.