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DTL Copper-Aluminum Terminal Blocks (Bimetallic Lugs) are high-quality friction-welded connectors designed for safe transition between aluminum cables and copper terminals in power systems. Made of T2 pure copper L3 high-purity aluminum, they eliminate galvanic corrosion and ensure stable, low-resistance electrical connection for indoor/outdoor medium-voltage applications (up to 35kV).

Key Features

• ✅ Friction-Welded Bimetal Structure: Tight Cu-Al bond, high mechanical strength, no separation

• ✅ Anti-Galvanic Corrosion: Prevents electrochemical reaction between copper and aluminum

• ✅ High Conductivity: Pure copper (≥99.9%) pure aluminum (≥99.5%), low contact resistance

• ✅ Bell-Mouth Design: Easy cable insertion, no damage to conductor insulation

• ✅ Pre-Greased Barrel: Anti-oxidation, moisture-proof, long service life

• ✅ Wide Size Range: Covers 10–800 mm² for diverse cable gauges

• ✅ Crimp-Type Installation: Secure connection with standard crimping tools

Common Models & Range

• DTL-10: 10 mm², length 64 mm

• DTL-16: 16 mm², length 70 mm

• DTL-25: 25 mm², length 75 mm

• DTL-35: 35 mm², length 85 mm

• DTL-50: 50 mm², length 90 mm

• DTL-70: 70 mm², length 102 mm

• DTL-95: 95 mm², length 110 mm

• DTL-120: 120 mm², length 118 mm

• DTL-150: 150 mm², length 125 mm

• DTL-185: 185 mm², length 132 mm

• DTL-240: 240 mm², length 140 mm

• DTL-300: 300 mm², length 155 mm

• DTL-400: 400 mm², length 170 mm

• DTL-630: 630 mm², length 195 mm

• DTL-800: 800 mm², length 220 mm

Specifications

• Material: T2 Pure Copper (Terminal End) L3 High-Purity Aluminum (Cable Barrel)

• Welding Process: Friction Welding

• Surface Finish: Acid Cleaning / Bright Finish

• Voltage Rating: ≤ 35kV (Medium Voltage)

• Color: Copper (Red) Aluminum (Silver)

• Standard: GB/T 2314, IEC 61238, ISO 9001 Certified

• Conductor Type: Solid, Stranded, Sector Aluminum Cables

Applications

• Aluminum cable to copper busbar transition in substations

• Power distribution panels & switchgear cabinets

• Transformer, motor & generator terminations

• Overhead line & underground cable connections

• Renewable energy (solar/wind) power systems

• Industrial & commercial electrical installations

Product Specifications

• Product Name: DTL Copper-Aluminum Terminal Blocks / Bimetallic Crimp Lugs

• Model: DTL-10, DTL-16, DTL-25, DTL-35, DTL-50, DTL-70, DTL-95, DTL-120, DTL-150, DTL-185, DTL-240, DTL-300, DTL-400, DTL-630, DTL-800

• Material: T2 Pure Copper L3 High-Purity Aluminum

• Welding Type: Friction Welded Bimetal

• Conductor Range: 10–800 mm²

• Voltage Rating: ≤ 35kV

• Standard: GB/T 2314, IEC 61238

• Color: Copper Red Aluminum Silver

• Application: Power Distribution, Substation, Switchgear, Cable Termination

Tags / Keywords

DTL copper-aluminum terminal, DTL bimetallic lug, Cu-Al transition lug, aluminum to copper cable lug, crimp type terminal block, power line connector, substation cable lug, electrical distribution fitting, DTL series fitting, bimetal cable terminal

Collection / Category

• Main Category: Power Line Hardware

• Subcategory: Cable Terminals & Lugs

• Optional: Distribution Hardware, Switchgear Parts