GPTAU Pre-Insulated Wiring

GPTAU Pre-Insulated Bimetallic Terminal Lugs | Cu-Al Transition Crimp Connectors for LV/MV Cables

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PRODUCT DETAIL

GPTAU (CPTAU) Pre-Insulated Bimetallic Terminals are friction-welded copper-aluminum lugs with an integral PVC insulation sleeve, designed for safe, corrosion-proof transition between aluminum cables and copper busbars/switchgear in low and medium voltage systems. The pre-insulated design eliminates extra insulation steps, ensures IP protection, and speeds up field installation for indoor/outdoor applications up to 35kV.

Key Features

✅ Friction-Welded Bimetal Structure: T2 copper palm L3 aluminum barrel, no separation, high mechanical strength
✅ Pre-Insulated PVC Sleeve: Integrated insulation, anti-aging, moisture-proof, IP65 protection
✅ Anti-Galvanic Corrosion: Eliminates Cu-Al electrochemical reaction, long service life
✅ High Conductivity: ≥99.9% Cu ≥99.5% Al, low contact resistance
✅ Color-Coded Insulation: Easy size identification (Blue/Orange/Red/Yellow)
✅ Bell-Mouth Entrance: Smooth cable insertion, no insulation damage
✅ Crimp-Type Installation: Works with standard hydraulic crimpers
✅ Wide Size Range: 10–400 mm² for aluminum cables (LVABC, stranded, compacted)

Common Models & Dimensions (mm)

GPTAU-10: 10 mm², L=73, Palm=M10, Blue
GPTAU-16: 16 mm², L=73, Palm=M10, Blue
GPTAU-25: 25 mm², L=98.5, Palm=M12, Orange
GPTAU-35: 35 mm², L=98.5, Palm=M12, Red
GPTAU-50: 50 mm², L=110, Palm=M16, Red
GPTAU-70: 70 mm², L=110, Palm=M16, Yellow
GPTAU-95: 95 mm², L=110, Palm=M16, Yellow
GPTAU-120: 120 mm², L=125, Palm=M16, Black
GPTAU-150: 150 mm², L=130, Palm=M16, Black
GPTAU-185: 185 mm², L=132, Palm=M20, Grey
GPTAU-240: 240 mm², L=140, Palm=M20, Grey
GPTAU-300: 300 mm², L=155, Palm=M24, Green
GPTAU-400: 400 mm², L=170, Palm=M24, Green

Specifications

Material: T2 Pure Copper (Palm) L3 High-Purity Aluminum (Barrel)
Insulation: PVC Sleeve, 80°C, Anti-Aging, IP65
Welding Process: Friction Welding (Bimetal Bond)
Voltage Rating: ≤ 35kV (Medium Voltage)
Temperature Range: -40°C to 80°C
Standard: GB/T 2314, IEC 61238, SAE J1128
Color: Copper Red (Palm) Color-Coded PVC (Blue/Orange/Red/Yellow)
Conductor Type: Stranded, Compacted, LVABC Aluminum Cables

Applications

Aluminum cable to copper busbar transition in substations
LV/MV switchgear, distribution panels, control cabinets
Transformer, motor, generator terminations
Overhead lines, underground cables, renewable energy systems
Industrial plants, commercial buildings, power distribution projects

Product Specifications（Shopify Specs ）

Product Name: GPTAU Pre-Insulated Bimetallic Terminal Lug / Cu-Al Transition Crimp Connector
Model: GPTAU-10, GPTAU-16, GPTAU-25, GPTAU-35, GPTAU-50, GPTAU-70, GPTAU-95, GPTAU-120, GPTAU-150, GPTAU-185, GPTAU-240, GPTAU-300, GPTAU-400
Material: T2 Copper L3 Aluminum (Friction-Welded)
Insulation: PVC Pre-Insulated Sleeve, IP65
Conductor Range: 10–400 mm² (Aluminum Cables)
Voltage Rating: ≤ 35kV
Standard: GB/T 2314, IEC 61238, SAE J1128
Color: Copper Red PVC Color-Coded
Application: Power Distribution, Substation, Switchgear, Cable Termination

Tags / Keywords

GPTAU pre-insulated terminal, CPTAU bimetallic lug, Cu-Al transition lug, aluminum to copper cable lug, pre-insulated crimp connector, LV/MV power terminal, friction-welded bimetal lug, color-coded terminal, power distribution fitting, GPTAU series fitting

Collection / Category

Main Category: Power Line Hardware
Subcategory: Pre-Insulated Cable Terminals
Optional: Distribution Hardware, Electrical Connectors