DTL-4
Mingxu
This innovative connector combines the high conductivity of copper with the cost-effectiveness of aluminum, eliminating galvanic corrosion risks in dissimilar metal joints. Compliant with EN 50483-4 and NFC 33-021 standards, the DTL-4 ensures reliable power transmission in LV networks operating up to 1kV. Its pre-insulated design integrates advanced waterproofing features, making it suitable for both indoor and outdoor installations in diverse environmental conditions.
The lug features a 99.9% pure copper palm for optimal contact with copper terminals and a 99.6% pure aluminum sleeve for secure crimping to aluminum conductors. The metallurgical bond between copper and aluminum is achieved through precision friction welding, resulting in contact resistance below 10 µΩ—far exceeding industry standards for low-loss current transmission.
A UV-resistant thermoplastic insulation tube covers the conductive components, providing dielectric strength of 6kV for 1 minute under water as verified by watertightness testing. Color-coded elastomeric rings (blue, orange, red, yellow, white, grey, pink, violet) allow for quick identification of compatible conductor cross-sections ranging from 10 mm² to 150 mm².
Pre-filled anti-oxidation grease in the aluminum sleeve breaks down oxide layers on conductor surfaces while creating a permanent seal against moisture ingress. The copper palm features a tin-plated finish (5-10 µm thickness) to resist tarnishing and ensure long-term conductivity.
The DTL-4 is extensively used in connecting LV-ABC cables to distribution transformers, switchgear, and meter boxes in residential, commercial, and industrial areas. Its insulation system makes it ideal for installations where exposure to rain, humidity, or airborne contaminants is common.
In solar PV systems and small wind turbines, this insulated bimetal lug facilitates reliable connections between aluminum array cables and copper busbars in combiner boxes and inverters. It operates efficiently within a temperature range of -40°C to 90°C, suitable for extreme climate conditions.
Temporary power distribution systems on construction sites utilize the DTL-4 for connecting portable generators and distribution panels. Its robust insulation and mechanical strength withstand the rigors of construction environments, including vibration and physical impact.
The lug is designed for use with standard hydraulic crimping tools equipped with dies matching the conductor size. Consult the manufacturer’s specifications for die dimensions corresponding to each color-coded variant to ensure proper compression and electrical performance.
While the aluminum sleeve is optimized for aluminum conductors, the DTL-4 can be used with copper conductors of compatible size when properly crimped. However, for copper-to-copper connections, a pure copper lug is recommended for optimal performance and cost-effectiveness.
When installed correctly and operated within rated parameters, the lug provides a service life of 25+ years. The insulation materials and anti-oxidation compounds are formulated to resist aging, while the friction-welded joint maintains integrity through thermal cycling and vibration.
Yes, the lug meets EN 50483-4 (European standard for cable accessories) and NFC 33-021 (French standard for electrical connections), ensuring it adheres to strict safety and performance criteria. It is also RoHS-compliant, containing no restricted hazardous substances.
| ltem No. | Φ | C | B | L | Color code | Package (pcs) | Gross weight (kg) |
| DTL-416-10 | 10.5 | 16 | 20 | 75 | Blue | 200 | 8 |
| DTL-425-12 | 13 | 16 | 24 | 100 | Orange | 200 | 16 |
| DTL-435-12 | 13 | 20 | 24 | 100 | Red | 200 | 15.5 |
| DTL-450-12 | 13 | 20 | 24 | 100 | Yellow | 200 | 15.5 |
| DTL-454.6-12 | 13 | 20 | 24 | 100 | Black | 200 | 14 |
| DTL-470-12 | 13 | 20 | 24 | 100 | White | 200 | 14.5 |
| DTL-495-12 | 13 | 20 | 24 | 100 | Grey | 200 | 14 |
| DTL-4120-12 | 13 | 25/28 | 30 | 118 | Pink | 200 | 15 |
| DTL-4150-12 | 13 | 25/28 | 30 | 118 | Violet | 200 | 15 |
This innovative connector combines the high conductivity of copper with the cost-effectiveness of aluminum, eliminating galvanic corrosion risks in dissimilar metal joints. Compliant with EN 50483-4 and NFC 33-021 standards, the DTL-4 ensures reliable power transmission in LV networks operating up to 1kV. Its pre-insulated design integrates advanced waterproofing features, making it suitable for both indoor and outdoor installations in diverse environmental conditions.
The lug features a 99.9% pure copper palm for optimal contact with copper terminals and a 99.6% pure aluminum sleeve for secure crimping to aluminum conductors. The metallurgical bond between copper and aluminum is achieved through precision friction welding, resulting in contact resistance below 10 µΩ—far exceeding industry standards for low-loss current transmission.
A UV-resistant thermoplastic insulation tube covers the conductive components, providing dielectric strength of 6kV for 1 minute under water as verified by watertightness testing. Color-coded elastomeric rings (blue, orange, red, yellow, white, grey, pink, violet) allow for quick identification of compatible conductor cross-sections ranging from 10 mm² to 150 mm².
Pre-filled anti-oxidation grease in the aluminum sleeve breaks down oxide layers on conductor surfaces while creating a permanent seal against moisture ingress. The copper palm features a tin-plated finish (5-10 µm thickness) to resist tarnishing and ensure long-term conductivity.
The DTL-4 is extensively used in connecting LV-ABC cables to distribution transformers, switchgear, and meter boxes in residential, commercial, and industrial areas. Its insulation system makes it ideal for installations where exposure to rain, humidity, or airborne contaminants is common.
In solar PV systems and small wind turbines, this insulated bimetal lug facilitates reliable connections between aluminum array cables and copper busbars in combiner boxes and inverters. It operates efficiently within a temperature range of -40°C to 90°C, suitable for extreme climate conditions.
Temporary power distribution systems on construction sites utilize the DTL-4 for connecting portable generators and distribution panels. Its robust insulation and mechanical strength withstand the rigors of construction environments, including vibration and physical impact.
The lug is designed for use with standard hydraulic crimping tools equipped with dies matching the conductor size. Consult the manufacturer’s specifications for die dimensions corresponding to each color-coded variant to ensure proper compression and electrical performance.
While the aluminum sleeve is optimized for aluminum conductors, the DTL-4 can be used with copper conductors of compatible size when properly crimped. However, for copper-to-copper connections, a pure copper lug is recommended for optimal performance and cost-effectiveness.
When installed correctly and operated within rated parameters, the lug provides a service life of 25+ years. The insulation materials and anti-oxidation compounds are formulated to resist aging, while the friction-welded joint maintains integrity through thermal cycling and vibration.
Yes, the lug meets EN 50483-4 (European standard for cable accessories) and NFC 33-021 (French standard for electrical connections), ensuring it adheres to strict safety and performance criteria. It is also RoHS-compliant, containing no restricted hazardous substances.
| ltem No. | Φ | C | B | L | Color code | Package (pcs) | Gross weight (kg) |
| DTL-416-10 | 10.5 | 16 | 20 | 75 | Blue | 200 | 8 |
| DTL-425-12 | 13 | 16 | 24 | 100 | Orange | 200 | 16 |
| DTL-435-12 | 13 | 20 | 24 | 100 | Red | 200 | 15.5 |
| DTL-450-12 | 13 | 20 | 24 | 100 | Yellow | 200 | 15.5 |
| DTL-454.6-12 | 13 | 20 | 24 | 100 | Black | 200 | 14 |
| DTL-470-12 | 13 | 20 | 24 | 100 | White | 200 | 14.5 |
| DTL-495-12 | 13 | 20 | 24 | 100 | Grey | 200 | 14 |
| DTL-4120-12 | 13 | 25/28 | 30 | 118 | Pink | 200 | 15 |
| DTL-4150-12 | 13 | 25/28 | 30 | 118 | Violet | 200 | 15 |
