Buy Bimetallic Lugs – DTL-1 / DTL-2 Series | Cu-Al Transition Terminals
What Are Bimetallic Lugs?
Bimetallic lugs are specialized terminal connectors designed to solve the challenges of joining aluminum conductors to copper busbars. These bi-metal cable lug solutions are engineered to prevent galvanic corrosion by separating dissimilar metals at the contact point. Typically made with an aluminum barrel and a copper palm, they are joined using advanced friction welding technology to form a durable, high-conductivity molecular bond. The design ensures that aluminum wires connect with the aluminum barrel and copper busbars interface with the copper palm. This structure eliminates direct contact between aluminum and copper, reducing the risk of electrical failure due to electrochemical reactions. These lugs are widely used in control cabinets, distribution boxes, solar combiner boxes, and power systems where Cu-Al transitions are common. Want a deeper dive into how bimetallic lugs are constructed and classified? Check out our detailed guide: What Are Bimetallic Lugs and Connectors – Types and How They're Made.How to Choose the Right Bimetallic Lugs
Choosing the correct bimetallic cable lugs depends on your installation environment, conductor size, and application type. SUNJ provides multiple series tailored to different needs:| Model | Structure | Application |
|---|---|---|
| DTL-1 | Copper palm + Aluminum barrel | Standard Cu-Al cable termination |
| DTL-2 | Aluminum barrel + Copper palm (reverse) | Projects requiring barrel-first crimping |
| DTL-4 | Extended barrel or special shape | Customized or large-scale installations |
- Match lug size to your conductor cross-section (16mm² to 630mm²)
- Check compatibility with crimping tools
- For solar systems or outdoor use, prioritize models with anti-oxidation grease filling
- Refer to detailed technical sheets for installation torque, crimp zones, and test data (available upon request)
Why Choose SUNJ Bimetallic Lugs
At SUNJ Electric, we don’t just supply bi-metal lugs connectors — we engineer dependable transition terminals backed by decades of manufacturing expertise. Here’s what makes our bimetallic lugs different:- Friction-welded construction: Strong molecular Cu-Al joint ensures electrical stability
- Grease-filled aluminum barrels: Protect against oxidation and improve long-term reliability
- Annealed and deep-indented design: Guarantees excellent crimping strength and conductor grip
- Tested and certified: Compliance with IEC 61238, RoHS, and ISO standards
- Application flexibility: Ideal for solar PV combiner boxes, electrical panels, industrial switchgear, and building infrastructure
- Global reach: With an overseas warehouse in Turkey, we offer fast and localized delivery across Europe and beyond
Call-to-Action
Looking for high-performance bimetallic lugs that ensure safe, reliable Cu-Al connections?- Get your quote now – custom specs and bulk pricing available
- Download product datasheets for DTL-1 / DTL-2 / DTL-4 series
- Contact our team for application support or OEM inquiries
Related Products
FAQ
Do You Provide Customized Services?
Yes, we provide customized services to meet your specific needs. As a professional Electric Power Fittings manufacturer, we offer tailored solutions including custom designs, material selection, sizes, and operational features.
What Is Your R&D Capability?
Our R&D capability is supported by full industry chain management, ensuring control from raw materials to product design and processing. We deliver high-quality Electric Power Fittings Products, and tailored solutions to meet customer needs.
How Is The Quality Of Your Electric Power Fittings?
SUNJ has an ISO9001-certified quality management system and an ISO14001-certified environmental management system! Our products has passed IEC 61238, IEC 61284, NFC 33042 standard certification. Our products deliver consistent performance you can trust.
What Electric Power Fittings Solutions Does Your Company Provide?
SUNJ offers a wide range of solutions, including aerial overhead line fittings, ABC accessories, polymer insulators, lightning Arresters, Drop-out Fuse Cutouts, Disconnect Switch, Auto-iRecloser, SF6 Gas Circuit Breaker. Designed for reliability and performance, our products support power transmission, equipment protection, and grid automation.
Why Choose SUNJ?
Comprehensive Whole-Industry Chain Management
We adhere to a fully traceable industry chain model, managing and monitoring every step from raw materials to final processing. This ensures consistent quality, reliability, and transparency in all our products.
Reliable Power Transmission and Distribution Solutions
At SUNJ, we offer high-performance solutions for power transmission and distribution. Our product range includes Aerial Overhead Line Fittings, ABC Accessories, Polymer Insulators, Lightning Arresters, Fuse Cutouts, Disconnect Switches, Auto-Reclosers, and SF6 Gas Circuit Breakers. Designed for durability and precision, our products ensure efficient power flow, equipment protection, and grid automation.
Strict Quality Control for Superior Electric Power Fittings
At SUNJ, we ensure superior quality management by implementing strict controls across every stage, from material sourcing to final inspection. Strictly following ISO 9001 quality management system and ISO 14001 environmental management system standards, our Electric Power Fittings have unparalleled durability, reliability, and performance.
Trusted Electric Power Fittings Partner
With over 15 years of experience, SUNJ is a global leader in power fittings solutions. Serving 80+ countries with 32+ utility approvals and 800+ successful projects, we ensure ISO 9001 and ISO 14001 certified quality and reliability for every product.
Need help choosing electric power fittings? We’ll recommend the right solution for you.