Ground Bus Bar

A Ground Bus Bar is a vital component in any electrical system, providing a secure and low-resistance pathway for grounding and bonding conductors. Designed to safely dissipate fault currents and stabilize voltage levels, our Copper Ground Bus Bars are engineered for high conductivity, corrosion resistance, and long service life in demanding industrial and commercial environments.

As leading busbar manufacturers and a trusted copper busbar supplier, we offer a full range of standard and custom bus bar copper products suitable for power distribution, telecommunications, solar energy, and more.

Key Features of Our Ground Bus Bars

• Material Options:
  High-conductivity 99.9% pure copper (IACS 100%) or lightweight aluminum (IACS 61%)
  Available with tin-plated or silver-plated finish to prevent oxidation

• Current Rating:
  Ranges from 200A to 5000A, depending on dimensions and application

• Voltage Range:
  Suitable for 600V to 35kV grounding systems

• Temperature Resistance:
  Operating from -40°C to +85°C, with high-temperature models rated to 150°C

• Short Circuit Withstand:
  Up to 100kA for 3 seconds, tested per IEC and UL standards

• Terminal Capacity:
  4 to 60+ tapped holes per bar, standard hole spacing at 20–50mm

• Compliance:
  Meets UL 891, IEC 60439, NFPA 70, RoHS, and REACH

Specifications Table – Copper Ground Bus Bar

Application Scenarios

1. Ground Bar for Electrical Panel
Standard in switchgear and panelboards, ground bars ensure low-resistance fault current return paths and equipotential grounding. Compatible with copper/aluminum conductors.

2. Data Centers & Telecom
Isolated grounding copper bus bars ensure minimal interference in -48V DC telecom systems and server racks. EMI/RFI protection meets telecom-grade requirements.

3. Renewable Energy Systems
Used in PV combiner boxes and wind turbine grounding, especially in harsh outdoor environments where anodized aluminum busbars offer excellent corrosion resistance.

4. Industrial Power Plants
Large-format copper bus bars (4" × 1/4") serve heavy machinery grounding, following NFPA 70 for impedance control and safety compliance.

5. Railway & Transportation Systems
Tin-plated copper ground bars with anti-vibration clamps are essential in railway substations and electric locomotive grounding systems.

Maintenance & Durability

• Routine Inspections: Quarterly checks for corrosion, thermal hotspots, and torque loosening

• Resistance Testing: Annual <0.5Ω continuity and >1MΩ insulation resistance

• Cleaning Methods: 5% citric acid for oxidation; conductive grease for long-term performance

• Replacement Criteria: ≥10% material loss or ≥30°C thermal hotspot deviation

Why Choose Us?

ISO-certified busbar manufacturers with 15+ years of experience
Flexible MOQ & fast turnaround for OEM/ODM orders
In-house CNC & punching for custom holes and shapes
Competitive pricing from direct busbar suppliers
Global shipping & export compliance (UL, CE, RoHS)

Need a Custom Ground Bus Bar?

Whether you're upgrading your electrical panel or designing a complex grounding system for industrial machinery, we’re here to help. As a trusted copper busbar supplier, we offer engineering support, fast prototyping, and global delivery.

Contact us today to request a quote or buy copper busbar at factory-direct pricing.

FAQ – Copper Ground Bus Bar

Q1: What is a Copper Ground Bus Bar used for?
A: It serves as a centralized grounding point in electrical systems to safely dissipate electrical current to the earth, ensuring system protection and user safety.

Q2: What types of surface finishes are available?
A: Bare copper is standard, but tin-plated and nickel-plated options are available for corrosion resistance and improved conductivity.

Q3: Can you customize the size and number of holes?
A: Yes, we offer full customization including length, width, thickness, number and spacing of holes, and type of insulators.

Q4: Are your bus bars compliant with international standards?

A: Yes, our products comply with UL, CE, RoHS, and REACH standards.

Q5: Do you supply insulators or mounting hardware with the bus bar?
A: Yes, we can supply insulators, brackets, screws, and other mounting accessories upon request.

Q6: What industries commonly use Copper Ground Bus Bars?
A: They are widely used in electrical panels, data centers, telecommunications, renewable energy systems, and industrial automation.

Q7: How do I choose the right bus bar size?
A: The size depends on your required current rating, installation space, and connection points. Our team can assist with technical selection.

Q8: Do you offer OEM or branding services?
A: Yes, we support OEM/ODM and can engrave your company logo or part number on the bus bar.