HDT Automotive Wire – Heavy-Wall PVC Insulated Cable for 12V/24V Vehicle Power and Battery Systems
HDT automotive wire is a heavy-wall primary wire insulated with polyvinyl chloride (PVC), built for durability, flame resistance, and mechanical protection in harsh automotive environments. Designed for 12V and 24V electrical systems, HDT wire is ideal for car battery cables, power distribution circuits, and rugged off-road wiring applications.
With a temperature rating of -40°C to +80°C and voltage up to 60V, HDT offers superior insulation thickness compared to TWP and GPT, making it suitable for high-load, vibration-prone, or abrasion-sensitive environments. It is manufactured in compliance with SAE J1128 and widely used by OEMs and aftermarket harness manufacturers.
🔧 Key Features of HDT Automotive Wire
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Operating temperature range: -40°C to +80°C
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Voltage rating: Up to 60V
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Heavy-wall PVC insulation for increased abrasion and impact resistance
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Stranded bare copper conductor for reliable conductivity
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Complies with SAE J1128 Type HDT
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RoHS and lead-free compliant
🧪 Mechanical and Thermal Properties – SAE J1128 Testing
| SAE Cable Type | Min. Tensile Strength (MPa) | Min. Tensile Strength (psi) | Min. Elongation (%) | Test Temp (°C ±2°C) | Temp Class Rating (°C) |
|---|---|---|---|---|---|
| TWP / GPT / HDT | 11 | 1600 | 125 | 110 | 80 |
HDT falls under the 80°C thermal class and is characterized by thicker insulation for heavy-duty environments.
📦 Application Areas for HDT Automotive Wire
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Car battery cables and main power distribution lines
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Battery-to-fuse box and alternator connections
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Cabling for trucks, RVs, trailers, and agricultural machinery
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Power wiring exposed to mechanical abrasion or fluid splash
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Harsh environments in off-road and commercial vehicle systems
HDT wire provides enhanced toughness and heat resistance, making it the preferred PVC solution for demanding automotive power and battery applications where durability and electrical reliability are critical.
🔗 Related Automotive Wire Products
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GPT Automotive Wire – General-purpose PVC wire for basic vehicle circuits
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TWP Automotive Wire – Thin-wall version for lightweight routing
