The 2500-31 50A vacuum circuit breaker (VCB) Fixed Static Contact Copper Silver Plated Series is engineered for high-voltage systems, delivering exceptional performance, reliability, and durability. This copper-silver plated contact ensures low resistance, stable conductivity, and long service life. It is widely used in industrial, utility, and commercial electrical systems to optimize circuit breaker efficiency and maintain high operational safety standards.

Table of Contents

1. Product Overview

2. Key Features and Performance

3. Environmental Standards Compliance

4. Technical Specifications

5. Installation and Operation Guidelines

6. Maintenance Recommendations

7. Troubleshooting Common Issues

8. Packaging and Storage

9. Applications

10. Customer Support and Warranty

1. Product Overview

The 2500-31 50A VCB Fixed Static Contact is a precision-engineered component used in Vacuum Circuit Breakers. Its copper base with silver plating provides high electrical conductivity while minimizing corrosion and wear. Designed for high-voltage applications, it supports stable current flow and reduces energy loss.

Key Design Considerations

• Material Composition: High-purity copper with silver plating

• Durability: Resistant to high temperatures and frequent switching cycles

• Compatibility: Suitable for 50A vacuum circuit breakers

2. Key Features and Performance

2.1 Electrical Performance

Performance Highlights:

• Efficient low-resistance contact for minimal energy loss

• High-temperature tolerance ensures stability in demanding environments

• Silver plating reduces oxidation and maintains long-term conductivity

2.2 Mechanical Performance

• Strong structural design resists mechanical stress

• High-frequency switching support without deformation

• Excellent durability under continuous load cycles

3. Environmental Standards Compliance

The 2500-31 series is manufactured in compliance with global environmental and safety standards.

• RoHS Compliance: Free from harmful substances like lead, mercury, and cadmium

• Recyclable Materials: Copper and silver materials can be safely recycled

• Energy Efficiency: Low electrical losses reduce overall system energy consumption

4. Technical Specifications

5. Installation and Operation Guidelines

5.1 Installation Process

1. Ensure the circuit breaker is de-energized.

2. Remove old fixed contacts if present.

3. Install the 2500-31 fixed contact according to the manufacturer's alignment marks.

4. Tighten all bolts and connections using a calibrated torque wrench.

5. Perform insulation and continuity tests before energizing.

5.2 Operation Flow

• Engage the circuit breaker slowly to allow proper contact mating

• Avoid frequent unnecessary switching to prolong contact life

• Monitor the system for Abnormal temperature rise

6. Maintenance Recommendations

6.1 Routine Checks

• Inspect for discoloration, corrosion, or wear on silver-plated surfaces

• Test contact resistance every 6 months

• Check torque of all mounting bolts

6.2 Cleaning and Replacement

• Use non-abrasive cleaning solutions to remove dirt or dust

• Replace contacts showing signs of excessive wear or pitting

• Avoid using sharp tools that can damage the silver plating

7. Troubleshooting Common Issues

8. Packaging and Storage

• Packaging: Anti-static and moisture-resistant packaging to prevent corrosion

• Storage Conditions: Keep in a dry, temperature-controlled environment

• Shelf Life: Recommended usage within 5 years from manufacture date

9. Applications

• Industrial high-voltage switchgear

• Power distribution networks

• Commercial and utility electrical systems

• Critical infrastructure requiring reliable VCB operation

10. Customer Support and Warranty

• Technical Support: Available 24/7 for installation and troubleshooting

• Warranty: 12 months from the date of delivery covering material and workmanship defects

• After-Sales Service: Includes replacement parts, maintenance guidance, and inspection support

The 2500-31 50A Vacuum Circuit Breaker Fixed Static Contact Copper Silver Plated Series combines superior electrical performance, mechanical durability, and environmental compliance. Its robust design and ease of maintenance make it a reliable choice for high-voltage VCB systems, ensuring operational safety, energy efficiency, and long service life.