Looking for a reliable and durable cable solution for your next electrical project? Our 4mm 3 Core Steel Wire Armoured (SWA) Cable is engineered to deliver mains electricity safely and efficiently in a wide range of applications, both indoors and outdoors.
Why Choose Our 4mm 3 Core SWA Cable?
This cable is more than just a conductor; it's a dependable power solution built for resilience.
- Exceptional Durability: Featuring robust steel wire armouring, this cable provides superior protection against mechanical stress and external damage, making it ideal for direct burial and harsh environments.
- Versatile Applications: Perfect for main power networks, incoming mains to homes, and various other industrial and domestic installations, whether laid underground or run externally/internally.
- Premium Insulation: The XLPE (cross-linked polyethylene) insulation offers excellent resistance to fluids, chemicals, and UV radiation, ensuring long-term performance and safety. It also boasts good heat stability and a high operating temperature of 90°C.
- Safety Standards: Manufactured to meet stringent international standards including BS 5467, IEC/EN 60502-1, and IEC/EN 60228, and is flame retardant according to IEC/EN 60332-1-2.
Construction & Technical Specifications
Our 4mm 3 Core SWA Cable is meticulously constructed for optimal performance and safety.
Construction Details:
- Conductors: High-quality plain circular, compacted, or shaped stranded copper conductors for efficient power transmission.
- Insulation: XLPE (cross-linked polyethylene), rated at 90°C, providing excellent electrical properties and thermal resistance.
- Core Identification:
- 3 Cores: Red, Yellow, Blue
- (Other configurations available upon request)
- Inner Sheath: An extruded PVC layer beds the insulated conductors, ensuring stability.
- Armour: Galvanized Steel Wires applied helically over the bedding for superior mechanical protection. (Aluminium wire armour or Aluminium/Steel Tapes available for specific needs as per IEC 60502).
- Sheath: Durable extruded PVC Type ST2 (as per IEC 60502-1) or Type 9 (as per BS 6346/5467).
- Special sheathing materials such as Fire Retardant PVC, Anti-Termite PVC, Anti-Rodent PVC, Sunlight Resistant PVC, Oil Resistant PVC, LLDPE, MDPE, HDPE, LSZH, and CPE are available upon special request to meet specific project requirements.

3 Core Steel Wire Armoured SWA Cable Construction
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