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The 1×660 mm² THAL Passthrough Connector is developed for ultra-high voltage transmission systems where conductor stability and reliable current transfer are critical. It is mainly used on overhead transmission lines carrying large-capacity electrical loads across long-distance grid networks.
This connector is suitable for THAL conductors and is designed to maintain consistent electrical contact while reducing resistance at the connection point. Its structure helps improve transmission efficiency and supports stable operation under high mechanical tension conditions.
The fitting is manufactured using precision machining technology to ensure accurate conductor matching and dependable installation performance in demanding transmission environments.
• Designed specifically for Ultra-High Voltage (UHV) transmission projects
• Suitable for large cross-section conductors (1×660 mm²)
• Meets mechanical and electrical requirements of UHV lines
Designed for 1×660 mm² THAL conductors
Stable electrical conductivity for UHV systems
Low contact resistance structure
Strong mechanical holding performance
Suitable for high-load transmission projects
Corrosion-resistant surface treatment
Reliable outdoor operation under changing climate conditions
Precision-processed conductor fitting structure

The passthrough connector is commonly installed in:
Ultra-high voltage transmission networks
Long-distance overhead power lines
National grid expansion projects
Utility transmission infrastructure
High-capacity conductor connection systems
Power interconnection engineering projects
For ultra-high voltage transmission projects, connector stability directly affects line reliability. The THAL passthrough connector is designed to maintain stable conductor contact during long-term operation while helping reduce energy loss caused by poor electrical connection.
Its reinforced structure also improves installation stability in overhead transmission environments exposed to wind load, temperature variation, and continuous mechanical stress.
| Product Name | 1×660 mm² THAL Passthrough Connector |
| Conductor Type | THAL |
| Conductor Size | 1×660 mm² |
| Application | Ultra-High Voltage Transmission Lines |
| Material | Aluminum Alloy / Customized |
| Surface Treatment | Corrosion Resistant Finish |
| Installation | Overhead Transmission System |
| OEM Service | Available |
Manufactured under strict UHV project quality control procedures
Electrical resistance tested to ensure ultra-low contact resistance
Mechanical tensile and slip tests meet UHV conductor load requirements
Thermal cycling tests conducted under high-current conditions
Dimensional precision verified for large cross-section conductors
Material traceability and batch inspection available upon request

Reacon supplies transmission line fittings and conductor connection hardware for utility and power grid projects. We focus on stable product quality, precise manufacturing standards, and practical engineering performance for modern transmission systems.Customized production and technical support are available according to project requirements and conductor specifications.
Q1: What is a THAL passthrough connector used for?
A1: It is used to connect THAL conductors in ultra-high voltage transmission systems and maintain stable electrical continuity across transmission lines.
Q2: Is the connector suitable for outdoor transmission projects?
A2: Yes. The connector is designed for overhead transmission environments and performs reliably under outdoor operating conditions.
Q3: What conductor size is supported?
A3: This model is designed for 1×660 mm² THAL conductors.
Q4: Can customized specifications be produced?
A4: Yes. Reacon supports customized production based on conductor type, project requirements, and technical drawings.
Q5: What are the main benefits of this connector?
A5: The connector provides stable conductivity, secure mechanical connection, and reduced resistance for high-capacity transmission systems.