Your professional Copper-Aluminum Cable Lugs supplier
Our goal is to become your trusted partner in the field of aluminum alloy electrical fittings in China. Founded in 2013 and headquartered in Tangxia Town, Dongguan City, Guangdong Province, GGuangdong Jinkaite Power Fittings Co., Ltd. is a leading manufacturer and supplier of low- and medium-voltage overhead line accessories, insulated piercing connectors (IPC), anchoring clamps, and power distribution components (text in red requires revision). Over the past decade, we have evolved into a comprehensive OEM/ODM supplier integrating mold design and R&D, plastic component production, metal processing, and electrical accessory manufacturing.
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![Bimetallic Terminal Connector]()
Bimetallic Terminal ConnectorDTL Bimetallic Terminal Connectors (copper-aluminum connectors) are crimp-type transition terminals featuring an integrated copper-aluminum structure. They ensure a reliable connection between copper -
![Aluminum To Copper Lug]()
Aluminum To Copper LugMaterial: Copper end: T2 red copper (conductivity ≥58 mS/m); aluminum end: 1060 pure aluminum; the copper-aluminum interface is formed by brazing; fasteners are made of Grade 8.8 high-strength -
![Conductor Copper-Aluminum Terminal]()
Conductor Copper-Aluminum Terminal• The Conductor Copper-Aluminum Terminal is a high-reliability terminal specifically designed for transition connections between small cross-section copper and aluminum conductors in low-voltage -
![Bi Metal Lug]()
Bi Metal LugMaterial: Copper end: T2 red copper (conductivity ≥ 58 mS/m); aluminum end: 1060 pure aluminum; copper-aluminum joint formed by brazing; fasteners made of Grade 8.8 high-strength steel.Process: -
![Bimetal Cable Lug]()
Bimetal Cable LugScope of Application: Overhead transmission and distribution lines of 10 kV and below, substations, distribution panels, and motor equipment; used for splicing and connecting copper and aluminum
Why Choose Us
The company boasts a robust backend support system and a mature vertical supply chain spanning “mold design → material processing → finished product manufacturing.” We offer efficient small-batch customization and rapid prototyping services, significantly shortening our clients’ product development cycles. Thanks to our superior product quality and comprehensive service system, our products are widely sold domestically and exported to markets in Southeast Asia, Europe, and the Americas. We remain committed to driving industrial upgrades in sectors such as power infrastructure, equipment manufacturing, and plastic applications through “deep technical expertise and scenario-based solutions.”.
Our Company
Established in 2013, Guangdong Jinkaite Power Fittings Co., Ltd. specializes in the R&D and manufacturing of power distribution fittings and related components, and operates a 19,000 m² facility with in-house R&D, full-process mold development, and integrated manufacturing.
Our Services
We provide professional sales and after-sales services. Our professional service team responds swiftly to pre-sales, sales, and after-sales needs, providing one-stop full-process services from procurement to on-site production and delivery, truly bringing service to your doorstep. We also offer more service support for website buyers.
Our Certificates
Certified to ISO 9001, ISO 14001, and OHSAS 18001, compliant with CE & RoHS, supported by multiple national patents, and recognized as a High-Tech and Specialized & Innovative Enterprise.
Our Market
Serving key domestic markets and 50+ countries worldwide, trusted by top utilities and global brands, and actively present at leading international power industry exhibitions.
Product Benefits and Applications
Your advantages with igus® polymer plain bearings and energy chains:
● Designed specifically for copper-aluminum transitions, preventing electrochemical corrosion● Stable electrical conductivity
The copper end provides excellent conductivity, while the aluminum end is compatible with aluminum wires. The overall contact resistance is low, ensuring current-carrying capacity that meets circuit requirements.
● Secure Connection with Sufficient Tensile Strength
Utilizing friction welding or brazing processes, the copper and aluminum are tightly bonded, ensuring the connection does not come loose or break after crimping.
● Simple Installation, Quick Construction
The tubular structure allows crimping with standard crimping pliers, ensuring high on-site construction efficiency.
● Oxidation and Corrosion Resistance
The copper end is tin-plated to resist oxidation and rust, making it suitable for outdoor and humid environments.
● Comprehensive Range of Sizes, High Versatility
Covers a full range of wire diameters, compatible with various aluminum cables connecting to copper busbars and copper equipment.
Typical Applications
- Connecting aluminum-core cables to circuit breakers, distribution boxes, and copper busbars
- Connecting aluminum wires to copper terminals in transformers, switchgear, and meter boxes
- Transition connections for aluminum conductors in rural and urban power distribution lines
- Infeed and feed-out lines for outdoor overhead lines and pad-mounted transformers
- Copper-to-aluminum transition scenarios in industrial plants, residential communities, and other distribution systems
| Lead Time | ||
| Quantity (pieces) | 1 - 1000 | > 1000 |
| Lead time (days) | 15 | To be negotiated |
Packaging and Shipping
- Packaging
1. Standard packaging: inner bag + cardboard box
2. Custom packaging is available upon request.
- Shipping
You may specify alternative shipping methods, such as airmail, FedEx, or DHL. We will inform you of the shipping costs upon receipt of your order. It is recommended that you provide your own FedEx/DHL account number so that shipping charges can be charged directly to your account. We also offer sea or air freight; please specify your port of destination.
FAQ
Q: What are DTL copper-aluminum terminals primarily used for?
A: They are primarily used in power distribution systems to facilitate transition connections between various types of aluminum conductors—including round and sector-shaped strands—and the copper terminals of electrical equipment. Examples include connecting aluminum-core cables to the copper output terminals of devices such as transformers, circuit breakers, and disconnect switches.
Q: What do the letters in the DTL model designation stand for?
A: D stands for "Terminal," T for "Copper," and L for "Aluminum." Thus, DTL denotes a copper-aluminum transition terminal. The accompanying number indicates the applicable conductor cross-sectional area (in mm²); for instance, DTL-70 is designed for use with 70 mm² aluminum conductors.
Q: What is the difference between the DTL-1 and DTL-2 series?
A: The DTL-1 series consists of terminals with a round-head design (compliant with Chinese national standards) and is suitable for standard aluminum cables. The DTL-2 series features either square-head or round-head designs (compliant with European standards) and utilizes a friction welding process; it is specifically designed for use with aluminum alloy cables and has been successfully deployed in domestic photovoltaic projects. The dual-hole configuration of the DTL-2 series offers enhanced resistance to torsion and vibration, making it ideal for applications involving significant mechanical vibration, such as large transformers and generators.
Q: Why is it mandatory to use copper-aluminum transition terminals rather than making a direct copper-to-aluminum connection?
A: Direct copper-to-aluminum connections present three major issues: 1) The difference in chemical reactivity between copper and aluminum leads to electrochemical corrosion; as the aluminum conductor oxidizes, both its mechanical strength and electrical conductivity are compromised. 2) Copper and aluminum possess different coefficients of thermal expansion (18×10⁻⁶/°C for copper vs. 23×10⁻⁶/°C for aluminum); when heated by electrical current, their expansion and contraction occur asynchronously, creating gaps that facilitate oxidation. 3) The difference in electrical resistivity between copper and aluminum results in uneven heating. Within just one year of a direct connection, the contact resistance can increase by as much as 300%, potentially leading to overheating and burnout.
As one of the most professional copper-aluminum cable lugs manufacturers and suppliers in China, we're featured by quality products and good price. Welcome to buy high-grade copper-aluminum cable lugs made in China here from our factory. If you have any enquiry about quotation, please feel free to email us.
