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Home > Products > Switchgear Fittings > Insulation Accessories > Contact Box > CH1A-40.5 40.5KV High Voltage Contact Box Insulator Switchgear Three Way Dual Hole

CH1A-40.5 40.5KV High Voltage Contact Box Insulator Switchgear Three Way Dual Hole

    CH1A-40.5 40.5KV High Voltage Contact Box Insulator Switchgear Three Way Dual Hole

    The CH1A-40.5 40.5KV High Voltage Contact Box Insulator Switchgear Three Way Dual Hole is designed for reliable electrical insulation and safety in switchgear systems. Made from durable epoxy resin, it provides excellent dielectric strength, mechanical stability, and compatibility with high-voltage applications, ensuring long-term performance in power distribution networks.
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High Voltage Contact Box Insulator Switchgear


The CH1A-40.5 40.5KV High Voltage contact box Insulator is a critical component in medium to high-voltage electrical systems. Engineered for reliability, durability, and safety, this contact box ensures stable insulation and efficient current conduction in switchgear systems. Its three-way dual hole design offers versatile connectivity, making it suitable for complex power distribution networks and industrial applications.


This product is crafted using high-quality epoxy resin, providing superior dielectric strength and resistance to mechanical and environmental stress. As a reliable high-voltage insulator, it plays a vital role in maintaining operational safety and minimizing downtime in electrical equipment.


Product Features

The CH1A-40.5 contact box combines innovative engineering with robust materials. Key features include:

  • Voltage Rating: 40.5KV, suitable for high-voltage systems

  • Material: Industrial-grade epoxy resin for electrical insulation

  • Design: Three-way dual hole configuration for flexible installation

  • Mechanical Strength: High impact and compressive resistance

  • Durability: Excellent resistance to environmental factors like humidity and temperature fluctuations

  • Safety: Minimizes risk of leakage and electrical faults


Product Certifications

Ensuring safety and compliance in electrical applications is essential. The CH1A-40.5 contact box meets multiple international standards and certifications:

CertificationDescriptionRelevance
IEC 62271-1High-voltage switchgear and controlgear standardGuarantees compatibility with global switchgear systems
ISO 9001Quality management systemEnsures consistent product quality and manufacturing processes
UL 94 V-0Flammability rating for plasticsConfirms fire-resistant properties of epoxy resin
RoHS CompliantRestriction of hazardous substancesEnvironmentally safe and free from harmful chemicals

These certifications confirm the CH1A-40.5 contact box is safe, reliable, and environmentally responsible, making it suitable for global electrical applications.


Structure and Design Overview

Understanding the structure of the CH1A-40.5 contact box is critical for proper installation and maintenance. The main structural components include:

  1. Epoxy Resin Housing:
    Provides mechanical support and high electrical insulation. The epoxy resin is molded precisely to accommodate high voltage stress and minimize electrical leakage.

  2. Three-Way Dual Hole Configuration:
    Allows for flexible connection points in the switchgear system, enabling multiple circuits to interface efficiently.

  3. Conductive Inserts:
    Made of high-conductivity copper or aluminum, these inserts ensure optimal electrical performance.

  4. Sealing Elements:
    Silicone or rubber seals maintain airtight conditions and prevent moisture ingress, protecting the internal components from corrosion and environmental damage.

  5. Mounting Brackets and Supports:
    Enable secure integration into switchgear panels, reducing mechanical stress and ensuring long-term stability.

High Voltage Contact Box Insulator Switchgear



Applications and Suitable Use Cases

The CH1A-40.5 40.5KV contact box is versatile, serving multiple industries and applications:

  • Power Distribution Substations: Ensures reliable insulation in high-voltage switchgear panels.

  • Industrial Facilities: Maintains electrical safety in factories and manufacturing plants.

  • Renewable Energy Systems: Supports high-voltage insulation in wind and solar power setups.

  • Commercial Buildings: Provides durable electrical infrastructure for large commercial complexes.

  • Utility Companies: Enhances maintenance and reliability of power grids.


Technical Specifications

ParameterSpecification
Rated Voltage40.5KV
Rated Current630A
MaterialIndustrial Epoxy Resin
Design TypeThree-way Dual Hole
Insulation Strength150kV/1min (AC withstand)
Operating Temperature-40°C to +85°C
FlammabilityUL 94 V-0
Environmental ResistanceMoisture, UV, thermal cycling
Mounting TypePanel or busbar integration
ApplicationIndoor switchgear systems

These specifications highlight the product’s high-performance characteristics, ensuring safe and efficient operation in demanding electrical environments.


Installation Guidelines

Proper installation is critical for maximizing the lifespan and performance of the CH1A-40.5 contact box. Key considerations include:

  1. Site Preparation: Ensure the installation area is dry, clean, and free of dust or conductive debris.

  2. Mounting: Align the contact box using the provided brackets and secure firmly to the switchgear panel.

  3. Connection: Insert conductive wires into the dual holes according to the wiring diagram, ensuring tight and stable contacts.

  4. Insulation Check: Verify dielectric strength with a megger or insulation tester to prevent leakage.

  5. Environmental Protection: Use additional seals if the installation site is prone to moisture or dust ingress.


Maintenance Guidelines

Regular maintenance enhances safety and prolongs the service life of the contact box:

  • Visual Inspection: Check for cracks, discoloration, or physical damage to the epoxy housing.

  • Electrical Testing: Conduct insulation resistance tests periodically to detect early signs of deterioration.

  • Cleaning: Use dry, lint-free cloths to remove dust; avoid water or chemical solvents.

  • Tightening Connections: Ensure all screws, bolts, and inserts remain secure to maintain proper conductivity.

  • Replacement Schedule: Components showing wear or insulation degradation should be replaced promptly.


Advantages of CH1A-40.5 Contact Box

The CH1A-40.5 contact box offers several benefits:

  • High Reliability: Maintains insulation under high-voltage stress.

  • Versatile Design: Three-way dual hole configuration supports complex wiring setups.

  • Durable Material: Epoxy resin resists environmental factors and mechanical damage.

  • Global Compliance: Meets IEC, ISO, and UL standards.

  • Cost-Effective Maintenance: Reduced downtime due to long-lasting components.

  • Safety-Oriented: Minimizes electrical faults and potential hazards in switchgear systems.


Customer Reviews

Customers report high satisfaction with the CH1A-40.5 contact box:

  • Electrical Contractors: Praise its reliability and easy integration into switchgear panels.

  • Industrial Users: Appreciate the durability under harsh environmental conditions.

  • Utility Companies: Note improved operational safety and reduced maintenance frequency.

Positive feedback highlights the combination of robust design, flexible installation, and adherence to international safety standards.


Environmental Considerations

The CH1A-40.5 contact box is designed with sustainability in mind:

  • RoHS Compliant: Free from harmful chemicals.

  • Epoxy Resin Efficiency: Minimizes material waste during production.

  • Durable Lifecycle: Long operational life reduces replacement frequency and environmental impact.

  • Recyclability: Components can be processed according to standard recycling protocols.



The CH1A-40.5 40.5KV High Voltage Contact Box Insulator Switchgear Three Way Dual Hole is a highly reliable, durable, and efficient solution for indoor switchgear systems. With superior insulation, robust epoxy resin construction, and flexible three-way dual hole design, it ensures safe, stable, and long-lasting performance. Certified to international standards and compatible with a wide range of applications, it is an ideal choice for industrial, utility, and commercial high-voltage electrical systems.


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