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ABB Copper Busbar

ABB Copper Busbar

RS Stock No. 237-6596

Brand ABB

  • Brand: ABB
  • Category: Busbars
  • Super Section: Circuit Breakers

€ 2.353.13

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ABB Copper Busbar

ABB Copper Busbar

RS Stock No. 237-6597

Brand ABB

  • Brand: ABB
  • Category: Busbars
  • Section: Fuses & Circuit Breakers

€ 1.957.80

1 in stock now

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ABB Copper Busbar

ABB Copper Busbar

RS Stock No. 237-6599

Brand ABB

  • Brand: ABB
  • Category: Busbars
  • Section: Fuses & Circuit Breakers

€ 592.36

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ABB Copper Busbar

ABB Copper Busbar

RS Stock No. 237-6601

Brand ABB

  • Brand: ABB
  • Category: Busbars
  • Super Section: Circuit Breakers

€ 1.512.28

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ABB Copper Busbar

ABB Copper Busbar

RS Stock No. 237-6602

Brand ABB

  • Brand: ABB
  • Category: Busbars
  • Section: Fuses & Circuit Breakers

€ 425.45

2 in stock now

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ABB Copper Busbar

ABB Copper Busbar

RS Stock No. 237-6603

Brand ABB

  • Category: Busbars
  • Section: Fuses & Circuit Breakers
  • Super Section: Circuit Breakers

€ 1.248.73

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ABB Copper Busbar

ABB Copper Busbar

RS Stock No. 237-6605

Brand ABB

  • Brand: ABB
  • Category: Busbars
  • Section: Fuses & Circuit Breakers

€ 588.60

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ABB Copper Busbar

ABB Copper Busbar

RS Stock No. 237-6607

Brand ABB

  • Brand: ABB
  • Category: Busbars
  • Section: Fuses & Circuit Breakers

€ 2.553.93

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ABB Copper Busbar

ABB Copper Busbar

RS Stock No. 237-6609

Brand ABB

  • Brand: ABB
  • Category: Busbars
  • Section: Fuses & Circuit Breakers

€ 2.070.75

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WAGO Copper Busbar

WAGO Copper Busbar

RS Stock No. 279-4286

Brand WAGO

  • Brand: WAGO
  • Category: Busbars
  • Manufacturer: Wago

€ 42.80

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WAGO Copper Busbar

WAGO Copper Busbar

RS Stock No. 279-4290

Brand WAGO

  • Brand: WAGO
  • Category: Busbars
  • Section: Fuses & Circuit Breakers

€ 8.91

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WAGO Copper Busbar

WAGO Copper Busbar

RS Stock No. 279-4292

Brand WAGO

  • Brand: WAGO
  • Category: Busbars
  • Super Section: Circuit Breakers

€ 7.53

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nVent SCHROFF Copper Busbar

nVent SCHROFF Copper Busbar

RS Stock No. 284-3022

Brand nVent SCHROFF

  • Brand: nVent SCHROFF
  • Section: Fuses & Circuit Breakers
  • Super Section: Circuit Breakers

€ 225.90

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ABB Copper Busbar

ABB Copper Busbar

RS Stock No. 237-6594

Brand ABB

  • Category: Busbars
  • Section: Fuses & Circuit Breakers
  • Super Section: Circuit Breakers

€ 1.989.18

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ABB Copper Busbar

ABB Copper Busbar

RS Stock No. 237-6600

Brand ABB

  • Brand: ABB
  • Category: Busbars
  • Super Section: Circuit Breakers

€ 1.073.03

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ABB Copper Busbar

ABB Copper Busbar

RS Stock No. 237-6604

Brand ABB

  • Brand: ABB
  • Category: Busbars
  • Super Section: Circuit Breakers

€ 1.800.93

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ABB Copper Busbar

ABB Copper Busbar

RS Stock No. 237-6606

Brand ABB

  • Brand: ABB
  • Section: Fuses & Circuit Breakers
  • Super Section: Circuit Breakers

€ 1.769.55

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ABB Copper Busbar

ABB Copper Busbar

RS Stock No. 237-6608

Brand ABB

  • Brand: ABB
  • Category: Busbars
  • Super Section: Circuit Breakers

€ 1.167.15

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ABB Copper Busbar

ABB Copper Busbar

RS Stock No. 237-6610

Brand ABB

  • Category: Busbars
  • Section: Fuses & Circuit Breakers
  • Super Section: Circuit Breakers

€ 1.757.00

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WAGO Copper Busbar

WAGO Copper Busbar

RS Stock No. 279-4289

Brand WAGO

  • Brand: WAGO
  • Category: Busbars
  • Super Section: Circuit Breakers

€ 38.65

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WAGO Copper Busbar

WAGO Copper Busbar

RS Stock No. 279-4291

Brand WAGO

  • Brand: WAGO
  • Category: Busbars
  • Super Section: Circuit Breakers

€ 6.90

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nVent SCHROFF Copper Busbar, 12 mm Pitch

nVent SCHROFF Copper Busbar, 12 mm Pitch

RS Stock No. 284-3021

Brand nVent SCHROFF

  • Brand: nVent SCHROFF
  • Category: Busbars
  • Section: Fuses & Circuit Breakers

€ 178.21

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F Lutze Ltd Tin Plated Copper Busbar

F Lutze Ltd Tin Plated Copper Busbar

RS Stock No. 891-8962

Brand F Lutze Ltd

  • Brand: F Lutze Ltd
  • Category: Busbars
  • Super Section: Circuit Breakers

€ 203.31

75 in stock now

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nVent SCHROFF Tin Plated Copper Busbar, 2.54 mm Pitch

nVent SCHROFF Tin Plated Copper Busbar, 2.54 mm Pitch

RS Stock No. 285-7812

Brand nVent SCHROFF

  • Brand: nVent SCHROFF
  • Category: Busbars
  • Section: Fuses & Circuit Breakers

€ 20.33

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...

What is a copper busbar?
A copper busbar is a flat, rectangular conductor made from copper that is used to distribute and collect electrical power within equipment such as switchgear, distribution boards, fuse blocks, and power cabinets. Copper busbars are known for their high electrical conductivity, excellent current carrying capacity, and low electrical resistance which minimizes voltage drop and heat generation in electrical systems. They come in various forms, including bare copper busbars, tin-plated copper busbars for corrosion resistance and easier soldering, and insulated copper busbars where an insulating sleeve or coating is applied to improve safety and enable closer component spacing. The geometry of a copper busbar—width, thickness, and length—directly affects its ampacity and impedance, making selection important for reliable power distribution in industrial and commercial installations.

What are copper busbars used for?
Copper busbars are used to carry high currents efficiently in a compact form factor. Typical applications include electrical distribution in switchgear, panelboards, motor control centers, and power distribution blocks. They are also used in solar inverters, electrical cabinets, data centers, and industrial machinery where durable, low-resistance conductors are required. In addition to bare copper busbars, tin-plated copper busbars and insulated variants are common, offering improved corrosion resistance, enhanced solderability, and enhanced safety in exposed environments. For projects that require lightweight, robust copper busbar assemblies, copper busbar strips and copper bars are used as modular components to build custom configurations in a controlled manufacturing process.

How do you select the right copper busbar size and rating?
Selecting the correct copper busbar size and rating depends on the expected current, allowable temperature rise, operating environment, and mechanical constraints. Key considerations include:
  • Current carrying capacity (ampacity) based on cross‑section, temperature rating, and insulation
  • Conductor geometry: copper busbar width, thickness, and length for proper mounting and clearance
  • Voltage rating and insulation requirements to prevent arcing and creepage
  • Connection method: lugs, clamps, bolted joints, or soldered interfaces and their torque specifications
  • Ambient temperature, thermal management, and potential derating factors
  • Finish and environment: bare copper vs tin-plated copper busbar for corrosion resistance
  • Mechanical constraints: available space and bending radius if the busbar needs to be shaped on site
When in doubt, consult the manufacturer’s ampacity tables for copper busbars and consider using copper busbar strips or copper bars in modular assemblies from trusted suppliers like RS Components to ensure compatibility with your enclosure and connectors.

What is tin-plated copper busbar and why use it?
Tin-plated copper busbars have a thin coating of tin on the copper surface. This tin finish offers several practical advantages:
  • Improved corrosion resistance in humid or mildly corrosive environments
  • Better solderability and easier brazing when making electrical connections
  • Enhanced wear resistance on contact surfaces, prolonging life in repeated connection/disconnection cycles
  • Lower risk of surface oxidation that can increase contact resistance over time
Tin-plated copper busbars are a common choice for electrical distribution systems, panel assemblies, and frequency of maintenance where reliability and long-term performance are critical. They are often offered alongside bare copper busbars and insulated copper busbars as part of a complete copper busbar solution for power distribution.

How do I install copper busbars safely?
Safe installation of copper busbars involves proper preparation, secure connections, and ongoing inspection. Follow these guidelines:
  • Power down the system and lockout/tagout the equipment before handling copper busbars
  • Use appropriate PPE and ensure surfaces are clean and free of contaminants
  • Choose correct connectors, clamps, and lugs sized for the copper busbar cross-section and rated current
  • Torque bolts to the manufacturer’s specifications to avoid loose connections or over-tightening
  • Keep busbars clean and free of oxidation, and cover exposed bare copper where needed for safety
  • Maintain adequate clearance and creepage distances to prevent arcing, particularly in high-voltage applications
  • Inspect joints for heat buildup and signs of wear during routine maintenance
  • Store and transport copper busbars in a way that prevents bending or denting the cross-section
In environments with moisture or chemical exposure, consider tin-plated copper busbars or insulated copper busbars with protective sleeves to extend service life and reduce maintenance needs.

What finishes and variants are available for copper busbars?
Copper busbars come in several variants to suit different applications:
  • Bare copper busbar for maximum conductivity and cost efficiency in protected environments
  • Tin-plated copper busbar for enhanced corrosion resistance and solderability
  • Insulated copper busbar with sleeves or coating to improve safety and allow closer component placement
  • Copper busbar strip and copper bar form factors for modular assemblies and custom configurations
  • Time-saving pre-cut and machined copper busbars designed for standard enclosures
When selecting finishes, consider operating environment, required longevity, and compatibility with connectors, lugs, and fasteners. RS Components typically offers a range of copper busbars and related copper products to fit common industrial and commercial installations.

How do you calculate the ampacity of a copper busbar?
Ampacity calculation for a copper busbar involves cross-section area, conductor temperature rating, insulation, ambient temperature, and cooling conditions. A practical approach includes:
  • Referencing standard ampacity charts for copper busbars with the chosen cross-section and material (bare copper, tin-plated, or insulated)
  • Applying derating factors for ambient temperature, enclosure ventilation, and grouping of conductors
  • Considering voltage drop and contact resistance at connections, which can affect overall system performance
  • Verifying with the manufacturer’s data for the specific copper busbar grade and finish
For precise design, consult RS Components’ copper busbar product data sheets and use engineering tables to match cross-section area (mm² or kcmil), rated current, and allowable temperature rise to your application, whether it’s electrical distribution, power distribution blocks, or a switchgear assembly.

What is the difference between copper busbar, copper strip, and copper bar?
The terms describe similar copper conductors in different geometries and use cases:
  • Copper busbar typically refers to a flat, wide rectangular conductor used for high-current distribution within enclosures and switchgear. It emphasizes low resistance and compact routing.
  • Copper strip is a narrower and thinner form that can be used for modular interconnects, connector fingers, or localized distribution where space is limited.
  • Copper bar is a broader category that can describe larger cross-section copper components, including the thickest and most rigid forms used in mechanical assemblies and support structures.
In practice, engineers choose copper busbars, copper strips, or copper bars based on current rating, space constraints, mounting options, and desired thermal performance. RS Components offers a range of copper busbars and related copper products to cover these needs.

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