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Available Copper Busbar TMY-10*100 Tin-Plated, Conductive Copper Strip, Red Copper Strip C1100 Copper Strip

Copper Busbars

Copper busbars, also known as copper mother bars or busbars, are long conductors made of copper material with a rectangular or chamfered (rounded) rectangular cross-section. They are used in circuits to transmit current and connect electrical equipment. Copper busbars are applied in electrical equipment, particularly in complete distribution units; typically, the U, V, and W phase busbars and the PE busbar in distribution cabinets are made of copper busbars. During use, copper busbars are usually marked with phase color letters or painted with phase color paint. The U phase copper busbar is painted yellow, the V phase copper busbar is painted green, the W phase copper busbar is painted red, and the PE busbar is painted with alternating yellow and green.

Copper busbars are primarily used in primary circuits (phase, neutral, and ground lines with high currents), and the connections of primary components with high currents in electrical cabinets are made with copper busbars, such as the main busbar connecting cabinets together and the branch busbars distributing to each cabinet's switchgear (disconnect switches, circuit breakers, etc.). Copper busbars come in tin-plated and bare copper varieties. In electrical cabinets, the connections of copper busbars typically require tin-plating and embossing or the addition of conductive grease. Unused areas are protected with heat-shrinkable sleeves, and some are coated with insulating paint. The main consideration for using copper busbars is the current-carrying capacity; select the appropriate busbar based on the current size, and ensure that the screws at the connections are tightly fastened to prevent the possibility of melting the busbars when currents are high.

Copper busbars are large current conductive products suitable for electrical equipment at both high and low voltages, switch contacts, distribution equipment, bus ducts, and other electrical engineering applications. They are also used in metal smelting, electrochemical electroplating, chemical industries, and other electrolytic smelting processes. Electrical copper busbars feature low resistivity and high bendability.