Editorial Technical Reference

Copper Busbar

This page explains how Copper Busbar is classified within Electrical Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

A solid copper bar used for high-current electrical distribution and connection in switchgear, busways, and power panels.

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Product Specifications

Technical details and manufacturing context for Copper Busbar

Definition

Copper busbars are rectangular or round cross-section conductors that distribute electrical power efficiently within switchboards, panel boards, busway systems, and industrial control equipment. They are specified by material grade (e.g., C11000, C10100), dimensions (width, thickness, length), and electrical conductivity. Grades differ in purity and conductivity, with oxygen-free copper (C10100) offering higher conductivity and ductility for demanding applications. Surface treatments like tin plating or silver plating enhance corrosion resistance and contact performance.

Working Principle

Copper busbars operate on the principle of low electrical resistance, allowing high currents to flow with minimal power loss and heat generation. The large cross-sectional area and high conductivity of copper ensure efficient current carrying capacity. Proper sizing and surface finish reduce contact resistance at joints, preventing overheating and ensuring reliable electrical connections.

Common Materials

C11000 (ETP copper), C10100 (OFHC copper), C10200 (oxygen-free copper)

Technical Parameters

Parameter	Typical range	Notes & selection driver
Material Grade	C11000 / C10100	C11000 for general use; C10100 for high conductivity and ductilityGB/T 5231
Width	20–200 mm	Standard widths; custom sizes availableGB/T 5585.1
Thickness	3–20 mm	Standard thicknesses; custom sizes availableGB/T 5585.1
Length	1000–6000 mm	Standard lengths; custom cutting available
Electrical Conductivity	≥ 100 %IACS	For C11000; C10100 ≥ 101% IACSGB/T 5585.1
Tensile Strength	200–280 MPa	Depends on temper (soft, half-hard, hard)GB/T 5585.1
Elongation	≥ 30 %	For soft temper; lower for hard temperGB/T 5585.1
Hardness	65–110 HB	Varies with temperGB/T 5585.1
Dimensional Tolerance (Width)	±0.5 mm	For widths up to 100 mm; tighter on requestGB/T 5585.1
Dimensional Tolerance (Thickness)	±0.2 mm	For thickness up to 10 mm; tighter on requestGB/T 5585.1
Edge Radius	0.5–2.0 mm	Rounded edges to reduce corona discharge
Surface Finish	Bare, tin-plated, silver-plated	Plating thickness per customer spec
Max Operating Temperature	90–105 °C	Continuous; depends on insulation and plating
Bending Radius (min)	2× thickness mm	For edgewise bending; depends on temper
Flatness	≤ 3 mm/m	Maximum deviation per meter
Test Method	Conductivity per GB/T 3048.2	Eddy current or resistance methodGB/T 3048.2

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Copper Busbar.

Published Manufacturer Relationships

Source-reviewed profile relationships currently associated with Copper Busbar

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Data Basis

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Preliminary Technical Classification

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