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Home > Products > Switchgear Fittings > Insulation Accessories > Contact Box > CH2-24-250 Electrical Contact Box Insulator Power Distribution Heat Sink 12kV 24kV Indoor Outdoor

CH2-24-250 Electrical Contact Box Insulator Power Distribution Heat Sink 12kV 24kV Indoor Outdoor

    CH2-24-250 Electrical Contact Box Insulator Power Distribution Heat Sink 12kV 24kV Indoor Outdoor

    The CH2-24-250 Electrical Contact Box Insulator is a high-quality power distribution component designed for 12kV and 24kV applications, suitable for indoor and outdoor environments. Featuring an integrated heat sink and durable construction, it ensures reliable insulation, stable electrical performance, and long-term high-voltage operation in modern industrial and commercial systems.
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Distribution Heat Sink


The CH2-24-250 Electrical contact box Insulator is a high-performance solution designed for Efficient Power Distribution in both indoor and outdoor environments. It operates effectively across 12kV and 24kV systems, providing reliable electrical insulation and thermal management through its integrated heat sink.

Product Overview

This contact box insulator combines durable materials with an innovative heat dissipation design. Its construction ensures stable electrical performance under high-voltage conditions, reducing the risk of equipment failure.

Key Features:

  • Voltage Range: 12kV to 24kV

  • Suitable for Indoor and Outdoor Installations

  • Integrated Heat Sink for Efficient Thermal Management

  • High-Quality Electrical Insulation

  • Compact and Modular Design for Easy Integration

Materials and Construction

The CH2-24-250 is manufactured using industrial-grade epoxy resin, chosen for its high dielectric strength and long-term durability. Key material characteristics include:

ComponentMaterialFunction
Insulator BodyEpoxy ResinElectrical insulation and structural integrity
Heat SinkAluminum AlloyThermal dissipation
Terminal ConnectorsCopper with Anti-Oxidation CoatingEfficient electrical conduction

The epoxy resin body ensures resistance to environmental factors, including moisture, UV radiation, and temperature fluctuations.

Product Performance

The CH2-24-250 is designed for high reliability in industrial power distribution. Its performance metrics include:

Performance MetricSpecification
Operating Voltage12kV / 24kV
Dielectric Strength≥ 75 kV/mm
Thermal Operating Range-40°C to 85°C
Mechanical Load Resistance2000 N
Insulation Resistance≥ 5000 MΩ

These specifications ensure long-term operational stability and compliance with international safety standards.

User Feedback and Applications

Users in industrial and commercial sectors have reported high satisfaction due to the CH2-24-250's durability, ease of installation, and stable performance. Typical applications include:

  • Indoor switchgear panels

  • Outdoor transformer connections

  • Power distribution systems in factories and substations

  • High-voltage testing environments

Distribution Heat Sink


Installation Guidelines

A quick and safe installation process enhances operational efficiency. Follow these steps:

  1. Preparation: Ensure power is turned off before installation.

  2. Positioning: Mount the CH2-24-250 on a compatible support bracket.

  3. Connection: Attach the input and output terminals using recommended torque settings.

  4. Securing: Fasten the unit using the supplied bolts and nuts.

  5. Inspection: Verify insulation integrity and perform a preliminary voltage test.

Recommended tools and materials:

  • Torque wrench

  • Insulation gloves

  • Screwdriver and spanner set

  • Voltage testing device

Maintenance and Longevity

Regular maintenance is essential to ensure the contact box performs reliably:

  • Monthly visual inspection for signs of damage or corrosion.

  • Annual electrical testing to verify insulation resistance.

  • Cleaning: Remove dust and debris using a dry, lint-free cloth.

  • Heat Sink Check: Ensure no obstruction to thermal dissipation.

Following these practices can extend the product life and maintain safety standards.

Environmental and Safety Compliance

The CH2-24-250 meets multiple international standards:

  • IEC 60694 for high-voltage switchgear

  • RoHS compliance for environmental safety

  • UL insulation testing for operational reliability

Its epoxy resin material is non-toxic and environmentally friendly, making it suitable for modern industrial installations that prioritize sustainability.

Technical Support

Professional technical support is available for:

  • Installation assistance

  • Troubleshooting electrical issues

  • Guidance on optimal placement for thermal efficiency

  • Product customization and upgrades


The CH2-24-250 electrical contact box Insulator provides a reliable, durable, and high-performance solution for power distribution across indoor and outdoor environments. Its combination of robust epoxy resin construction, integrated heat sink, and user-friendly installation ensures it meets both safety and operational standards. This makes it ideal for industrial applications where High Voltage reliability is critical.

Call to Action

For more information on the CH2-24-250, including technical specifications, installation guides, and purchasing options, contact our sales team or visit our official B2B platform to ensure access to authentic, high-quality electrical insulation solutions.


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