DTL-2
Mingxu
The DTL-2 double-hole bimetallic lug is designed for reliable termination between aluminum conductors and copper busbars. It is manufactured from 1070 aluminum and T3 copper, joined through a stable friction-welding process. This structure ensures long-term conductivity and minimizes the risk of galvanic corrosion—an issue that often appears when aluminum cables are connected directly to copper equipment.
Many power distribution systems still rely on aluminum-core cables due to their lighter weight and lower cost. However, most switchgear terminals and equipment pads are copper-based. The DTL-2 lug solves this mismatch with a mechanically strong and electrically efficient copper-aluminum transition. The double-hole copper palm offers a secure bolted connection, providing better mechanical stability than single-hole lugs—especially in installations where vibration or thermal cycling is expected.
The aluminum barrel is made of 1070 aluminum, known for its low resistivity and good ductility during crimping. The palm uses T3 electrolytic copper, ensuring excellent current-carrying capability and durable mechanical performance.
The friction-welded transition creates a clean, metallurgical connection that avoids filler metals and reduces electrical resistance at the joint. This method offers consistent quality and excellent service life.
The extended copper palm distributes pressure evenly across the mounting surface. Two bolts ensure firm attachment to copper plates or terminal pads, reducing the risk of loosening under load or vibration.
Both materials naturally resist oxidation. Combined with precision manufacturing, the lug performs reliably outdoors and in environments with wide temperature variations, making it suitable for solar installations, substations, and industrial plants.
The aluminum tube’s inner surface is smooth, allowing straightforward cable insertion. It is compatible with standard crimping tools used for hexagonal or indentation crimping.
The DTL-2 series is widely installed in:
Power distribution cabinets and switchgear
Transformer connections
Photovoltaic inverter and combiner box installations
Industrial control equipment
Railway power systems
Wind power and energy-storage equipment
Any application that requires aluminum conductor cables to connect reliably to copper equipment can benefit from this lug.
These data help installers confirm cable suitability and mounting compatibility before ordering.
Aluminum barrel: uniform inner diameter for even crimping pressure
Copper palm: thickened design improves heat dissipation and contact area
Transition zone: smooth taper reduces current concentration and improves conductivity
Each lug undergoes mechanical and electrical testing before shipment, including tensile testing, resistance checks, and inspection of the copper-aluminum weld. This ensures consistent performance and stable connection quality once installed.
Match the lug model to the cable cross-section.
Strip the cable to the required length and clean the surface if needed.
Insert the conductor fully into the barrel.
Use a standard crimping tool to complete the compression.
Fix the copper palm using two bolts and appropriate washers.
Proper crimping is essential for long-term performance.
Better fastening stability
Lower contact resistance
Stronger protection against vibration
Wider contact area on equipment terminals
Long-lasting copper–aluminum bonding
For installations where safety and reliability matter—such as substations, renewable energy systems, and high-current industrial equipment—the DTL-2 configuration provides a dependable solution.
Depending on project requirements, customized models can be produced, including modified hole spacing, thickness adjustments, logo engraving, or special packaging. Technical support is also available for selecting suitable lug types or confirming installation details.
The DTL-2 double-hole bimetallic lug is designed for reliable termination between aluminum conductors and copper busbars. It is manufactured from 1070 aluminum and T3 copper, joined through a stable friction-welding process. This structure ensures long-term conductivity and minimizes the risk of galvanic corrosion—an issue that often appears when aluminum cables are connected directly to copper equipment.
Many power distribution systems still rely on aluminum-core cables due to their lighter weight and lower cost. However, most switchgear terminals and equipment pads are copper-based. The DTL-2 lug solves this mismatch with a mechanically strong and electrically efficient copper-aluminum transition. The double-hole copper palm offers a secure bolted connection, providing better mechanical stability than single-hole lugs—especially in installations where vibration or thermal cycling is expected.
The aluminum barrel is made of 1070 aluminum, known for its low resistivity and good ductility during crimping. The palm uses T3 electrolytic copper, ensuring excellent current-carrying capability and durable mechanical performance.
The friction-welded transition creates a clean, metallurgical connection that avoids filler metals and reduces electrical resistance at the joint. This method offers consistent quality and excellent service life.
The extended copper palm distributes pressure evenly across the mounting surface. Two bolts ensure firm attachment to copper plates or terminal pads, reducing the risk of loosening under load or vibration.
Both materials naturally resist oxidation. Combined with precision manufacturing, the lug performs reliably outdoors and in environments with wide temperature variations, making it suitable for solar installations, substations, and industrial plants.
The aluminum tube’s inner surface is smooth, allowing straightforward cable insertion. It is compatible with standard crimping tools used for hexagonal or indentation crimping.
The DTL-2 series is widely installed in:
Power distribution cabinets and switchgear
Transformer connections
Photovoltaic inverter and combiner box installations
Industrial control equipment
Railway power systems
Wind power and energy-storage equipment
Any application that requires aluminum conductor cables to connect reliably to copper equipment can benefit from this lug.
These data help installers confirm cable suitability and mounting compatibility before ordering.
Aluminum barrel: uniform inner diameter for even crimping pressure
Copper palm: thickened design improves heat dissipation and contact area
Transition zone: smooth taper reduces current concentration and improves conductivity
Each lug undergoes mechanical and electrical testing before shipment, including tensile testing, resistance checks, and inspection of the copper-aluminum weld. This ensures consistent performance and stable connection quality once installed.
Match the lug model to the cable cross-section.
Strip the cable to the required length and clean the surface if needed.
Insert the conductor fully into the barrel.
Use a standard crimping tool to complete the compression.
Fix the copper palm using two bolts and appropriate washers.
Proper crimping is essential for long-term performance.
Better fastening stability
Lower contact resistance
Stronger protection against vibration
Wider contact area on equipment terminals
Long-lasting copper–aluminum bonding
For installations where safety and reliability matter—such as substations, renewable energy systems, and high-current industrial equipment—the DTL-2 configuration provides a dependable solution.
Depending on project requirements, customized models can be produced, including modified hole spacing, thickness adjustments, logo engraving, or special packaging. Technical support is also available for selecting suitable lug types or confirming installation details.
