Armoured cable, also spelled armored cable, is a type of electrical cable reinforced with a protective layer—typically steel or aluminum—designed to resist mechanical damage and ensure electrical safety in demanding environments. But what exactly is it used for, and when should you choose it over regular cables?
In this article, we’ll break down the main uses of armoured cable, types of environments where it is essential, and the advantages it offers.
What Are Armoured Cables
🔍 What Is an Armoured Cable?
An armoured cable is a cable with one or more conductors enclosed in insulation, a bedding layer, and a protective armour layer, typically made from:
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🧵 Steel Wire Armour (SWA) – Common for mechanical protection
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⚙️ Steel Tape Armour (STA) – Used in larger, less flexible cables
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🪙 Aluminum Wire Armour (AWA) – For single-core cables (non-magnetic)
🛡️ The key function of the armour is to protect the cable from mechanical stress, including crushing, impacts, or rodents—without affecting its electrical properties.
🏗️ Common Types of Armoured Cable
| Cable Type | Description | Use Case |
|---|---|---|
| SWA Armoured Cable | Steel wire armour over XLPE-insulated cores | Power distribution, outdoor use |
| STA Armoured Cable | Steel tape for flat or large cables | Underground or fixed installations |
| AWA Armoured Cable | Used in single-core cables to avoid eddy currents | Power systems, substations |
| Control Armoured Cable | Carries low-voltage signals with mechanical protection | Industrial automation |
| Fire-Resistant Armoured Cable | For emergency circuits | Fire alarms, emergency lighting |
⚙️ Construction of Armoured Cable
Typical layers of a low-voltage armoured power cable:
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Conductor – Copper or aluminum (single or multi-core)
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Insulation – XLPE or PVC insulation
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Bedding – Inner sheath (PVC)
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Armour Layer – SWA, STA, or AWA
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Outer Sheath – UV- and moisture-resistant PVC or LSZH
✅ Benefits of Armoured Cables
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🛡️ Mechanical Protection – Withstands crush, impact, and abrasion
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⚡ High Voltage Capability – Suitable for LV and MV systems
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🌧️ Weather & UV Resistance – Ideal for outdoor environments
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🔥 Fire Resistance Options – Available in fire-retardant versions
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🧱 Burial Ready – Suitable for direct burial without conduit
🏭 Where Are Armoured Cables Used?
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🏗️ Construction Sites
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🏭 Factories and Warehouses
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🚧 Underground Electrical Systems
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🌾 Agricultural Installations
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🚢 Marine and Offshore Platforms
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🌞 Solar Power and Wind Farms
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🏢 Commercial Buildings and Substations
🧠 Armoured vs Unarmoured Cable – What’s the Difference?
| Feature | Armoured Cable | Unarmoured Cable |
|---|---|---|
| Protection Level | High – Steel or aluminum layer | Low – Only sheath protection |
| Cost | Higher | Lower |
| Weight | Heavier due to armour | Lighter |
| Typical Use | Outdoor, buried, industrial | Indoor, conduit, low-risk zones |
📦 Looking for Quality Armoured Cables?
TOT Wire & Cable manufactures a wide range of armoured cables with:
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✔️ Copper or aluminum conductors
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✔️ SWA, STA, or AWA armour options
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✔️ XLPE or PVC insulation
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✔️ IEC, BS, or GB/T standards compliance
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✔️ Custom configurations and sizes available
👉 Request a Quote or contact us to get bulk armoured cable prices, datasheets, and shipping info.
