4mm 4 Core PVC SWA XLPE Armoured Steel Wire Cables

Industrial-Grade Power Distribution Built to Survive Harsh Environments

The 4mm 4 Core PVC SWA XLPE Armoured Steel Wire Cable delivers superior tensile strength, allowing the cable to endure pulling forces during installation and minor ground movement post-burial. Whether you're powering construction sites, industrial facilities, or permanent underground infrastructure, this cable provides the mechanical protection that standard cables simply cannot match.

What Makes This Cable Different

Unlike unarmoured cables, the robust layer of steel wire armour makes these cables remarkably resistant to physical damage, such as crushing, impact, and penetration. This is critical when cables face real-world hazards—machinery traffic, ground settlement, rodent damage, or accidental strikes with tools. The galvanised steel wires applied helically in a single layer ensure near-100% coverage and high impact resistance.

Superior Thermal Performance with XLPE Insulation

Contemporary designs use cross-linked XLPE insulation, resulting in high-performance steel wire armoured XLPE cable variants that operate continuously at 90°C with excellent thermal stability. This means the cable maintains full capacity even in demanding thermal environments—far better than basic PVC alternatives. XLPE insulation provides higher dielectric strength, resists thermal aging, maintains insulation properties over time, and delivers lower electrical losses and improved current-carrying capacity.

The Four-Core Advantage

The 4 Core cable is commonly used for three phase circuits, with the fourth core usable as an earth, meaning you don't need to use a separate earth cable. This simplifies installations and reduces material costs. Typical SWA Cable operates at low voltage (600/1000V) and suits mains distribution, sub-mains, and control circuits.

Protection That Works in the Harshest Conditions

The ability to withstand impact, crushing, rodents and environmental hazards makes them the preferred choice for safeguarding electrical systems in demanding environments. The PVC outer sheath provides a tough barrier against abrasion, crushing, and minor impacts, while also offering good resistance to moisture, UV light (with additives), and a wide range of industrial chemicals.

Where This Cable Excels

Core applications for SWA cables focus on environments requiring resistance to significant tensile forces or impacts: such as vertical cabling in underground mines (resisting tension from its own weight), power supply for port cranes (withstanding frequent vibrations and mechanical shocks), and underground direct burial projects exceeding 1 meter depth (resisting soil pressure and construction damage). The cable also performs reliably in renewable energy projects like wind farms and photovoltaic plants that require long-distance and continuous power supply.

Standards Compliance and Safety

The black outer sheath resists UV and chemicals, while the armour can serve as a Circuit Protective Conductor (CPC) when correctly earthed—simplifying electrical installations and boosting electrical safety. SWA Cable primarily complies with BS 5467 (UK) for XLPE-insulated, PVC-bedded and sheathed armoured cables, and IEC 60502-1 for extruded solid dielectric cables rated up to 1 kV, with standards defining construction details, voltage testing, insulation properties, armour conductivity, and mechanical performance.

Cost-Effective Over Its Lifetime

While the initial investment is higher than standard cable, the durability and protection provided reduce long-term costs. SWA cables are built for long-term use, even in harsh environments such as moisture, corrosion, and high mechanical stress, reducing maintenance costs and ensuring stable operation.