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CU-AL terminals are specially designed for reliable connection between copper conductors and aluminum conductors in power distribution systems. These copper aluminum bimetal terminals effectively prevent galvanic corrosion caused by direct copper-to-aluminum contact, ensuring stable electrical performance and long service life.
The CU-AL cable lug electrical terminal is manufactured using friction-welded or metallurgically bonded copper and aluminum materials, providing low contact resistance, excellent conductivity, and strong mechanical strength. It is widely used in transformers, switchgear, distribution panels, and overhead or underground power cable terminations.
Designed for copper to aluminum conductor connection
Prevents galvanic corrosion between CU and AL
Low contact resistance for efficient power transmission
High conductivity bimetal structure
Strong crimping performance and mechanical strength
Stable performance under thermal cycling
Suitable for indoor and outdoor electrical installations
Long service life with minimal maintenance
1.DTL series of copper-aluminum wiring terminals are suitable for transition connection of circular aluminum wires, hemicycle-sector aluminum wires, power supply cables in the distribution equipment.
2.The technology of friction welding is wonderfully adopted,Therefore they have distinguishing features of strong weld intensity,good nature in electrification,galvanic corrosion resistant and long service life.
Power distribution systems
Transformer and switchgear connections
Copper cable to aluminum busbar termination
Industrial and utility electrical installations
Overhead and underground power cable systems
Select the correct CU-AL terminal according to conductor size and type.
Strip the insulation from the copper and aluminum conductors.
Insert the conductor fully into the CU-AL cable lug barrel.
Use a proper crimping tool to securely crimp the terminal.
Insulate and seal the connection if required for outdoor use.
1. Using exclusive thickened materials
2. After special processing, it is more durable, corrosion-resistant, and antioxidant
3. Firmly installed, suitable for various occasions
Item No. | Cable spec(mm2) | Dimensions(mm) | |||||
ø | D | d | L | L1 | B | ||
DTL10 | 10 | 8.5 | 10 | 6 | 68 | 28 | 16 |
DTL16 | 16 | 8.5 | 11 | 6 | 70 | 32 | 16 |
DTL25 | 25 | 8.5 | 12 | 7 | 75 | 34 | 18 |
DTL35 | 35 | 10.5 | 14 | 8.5 | 85 | 40 | 20.5 |
DTL50 | 50 | 10.5 | 16 | 9.8 | 90 | 42 | 23 |
DTL70 | 70 | 12.5 | 18 | 11.5 | 100 | 47 | 26 |
DTL95 | 95 | 12.5 | 21 | 13.5 | 110 | 50 | 28 |
DTL120 | 120 | 14.5 | 23 | 15 | 120 | 53 | 30 |
DTL150 | 150 | 14.5 | 25 | 16.5 | 125 | 55 | 34 |
DTL185 | 185 | 17 | 28 | 18.5 | 136 | 58 | 37 |
DTL240 | 240 | 17 | 30 | 21 | 148 | 60 | 40 |
DTL300 | 300 | 21 | 34 | 23.5 | 165 | 65 | 50 |
DTL400 | 400 | 21 | 38 | 27 | 170 | 70 | 50 |
DTL500 | 500D | 21 | 47 | 29 | 225 | 75 | 60 |
High-quality copper and aluminum raw materials
Reliable bimetal bonding process
Strict conductivity and resistance testing
Dimensional accuracy and crimping inspection
100% inspection before delivery
Q1: What are CU-AL terminals used for?
A1: They are used to connect copper conductors to aluminum conductors safely.
Q2: Why should CU-AL terminals be used instead of direct connection?
A2: CU-AL terminals prevent galvanic corrosion and ensure stable conductivity.
Q3: Are CU-AL terminals suitable for outdoor applications?
A3: Yes, with proper insulation and sealing, they are suitable for outdoor use.
Q4: What crimping tools are required?
A4: Standard hydraulic or mechanical crimping tools are recommended.
Q5: Can CU-AL terminals be customized?
A5: Yes, sizes and specifications can be customized upon request.
