Multicore Armoured Halogen‑Free Low Smoke Cable – BS6724, SWA, XLPE, LSZH – 0.6/1kV

Low Voltage Power Cables BS Standard Cables
Description

Product Overview

This multicore steel wire armoured (SWA) cable features halogen-free low smoke zero halogen (LSZH) materials, making it ideal for installations where fire safety, low toxic gas emission, and minimal smoke are critical. Suitable for industrial areas, public buildings, tunnels, and any environment where people or sensitive equipment are present.

Standard: BS6724

Technical Characteristics:

Property Specification
Flame Retardancy BS EN 60332-1-2, BS EN 60332-3-24
Sheath Colour Black (other colours available on request)
Core Identification HD 308 S2
Max Conductor Operating Temperature +90°C
Lowest Ambient Temperature (fixed installation) -40°C
Lowest Installation Temperature 0°C
Max Short-Circuit Conductor Temperature +250°C
Smoke Emission BS EN 61034-2
Corrosive & Acid Gas Emission BS EN 60754-1, HCL ≤ 0.5%
Minimum Bending Radius 6 × D (D = overall cable diameter)
Test Voltage 3.5kV

Core identification colours (standard):

  • 2-core: brown, blue

  • 3-core: brown, black, grey

  • 4-core: blue, brown, black, grey

  • 5-core: green-yellow, blue, brown, black, grey

  • Auxiliary cables: white with black numbering

Specifications

Property Details
Voltage Level Low Voltage (0.6/1kV)
LSZH (Low Smoke Zero Halogen) ✓
Working Temperature 90°C
Cold Resistant -40°C
Flame Retardant ✓ (BS EN 60332-1-2 & -3-24)

Construction

The cable is manufactured with the following layers:

  1. Conductor: Annealed copper conductor or aluminium conductor, circular compacted stranded Class 2 according to BS EN 60228.

  2. Insulation: Cross-linked polyethylene (XLPE) type GP8 according to BS 7655-1.3.

  3. Bedding: LSOH (special low smoke zero halogen compound).

  4. Armour: Single layer of galvanized steel wires applied spirally over the bedding (SWA).

  5. Sheath: LSOH compound type LTS1 according to BS 7655-6.1.

Technical Parameters

2-Core Armoured LSZH Cable

Conductor Size (mm²) Nominal Insulation Thickness (mm) Nominal Overall Diameter (mm) Approx. Net Weight - Cu (kg/km) Max Cu Conductor Resistance @20°C (Ω/km) Approx. Net Weight - Al (kg/km) Max Al Conductor Resistance @20°C (Ω/km)
2×1.5 0.7 14.5 339 12.100 321 –
2×2.5 0.7 15.4 388 7.410 358 –
2×4 0.7 16.48 452 4.610 403 –
2×6 0.7 17.56 526 3.080 452 –
2×10 0.7 19.94 786 1.830 663 3.08
2×16 0.7 21.94 981 1.150 786 1.91
2×25 0.9 25.84 1441 0.727 1135 1.2
2×35 0.9 24.73 1539 0.524 1112 0.868
2×50 1.0 27.25 1935 0.387 1324 0.641
2×70 1.1 30.17 2446 0.268 1592 0.443
2×95 1.1 35.02 3364 0.193 2204 0.32
2×120 1.2 37.53 3968 0.153 2503 0.253
2×150 1.4 40.88 4733 0.124 2902 0.206
2×185 1.6 45.83 6050 0.099 3794 0.164
2×240 1.7 50.01 7361 0.075 4435 0.125
2×300 1.8 54.39 8813 0.060 5154 0.1
2×400 2.0 60.03 11071 0.047 6193 0.0778

3-Core Armoured LSZH Cable

Conductor Size (mm²) Nominal Insulation Thickness (mm) Nominal Overall Diameter (mm) Approx. Net Weight - Cu (kg/km) Max Cu Conductor Resistance @20°C (Ω/km) Approx. Net Weight - Al (kg/km) Max Al Conductor Resistance @20°C (Ω/km)
3×1.5 0.7 14.97 370 12.100 343 –
3×2.5 0.7 15.94 431 7.410 385 –
3×4 0.7 17.11 511 4.610 438 –
3×6 0.7 18.27 606 3.080 496 –
3×10 0.7 20.77 912 1.830 728 3.08
3×16 0.7 22.93 1167 1.150 874 1.91
3×25 0.9 27.09 1729 0.727 1270 1.2
3×35 0.9 28.09 2029 0.524 1388 0.868
3×50 1.0 31.92 2640 0.387 1725 0.641
3×70 1.1 36.47 3645 0.268 2363 0.443
3×95 1.1 40.47 4572 0.193 2832 0.32
3×120 1.2 43.40 5431 0.153 3234 0.253
3×150 1.4 48.98 7014 0.124 4268 0.206
3×185 1.6 53.17 8300 0.099 4916 0.164
3×240 1.7 58.59 10251 0.075 5861 0.125
3×300 1.8 63.82 12310 0.060 6822 0.1
3×400 2.0 70.10 15512 0.047 8196 0.0778

4-Core Armoured LSZH Cable

Conductor Size (mm²) Nominal Insulation Thickness (mm) Nominal Overall Diameter (mm) Approx. Net Weight - Cu (kg/km) Max Cu Conductor Resistance @20°C (Ω/km) Approx. Net Weight - Al (kg/km) Max Al Conductor Resistance @20°C (Ω/km)
4×1.5 0.7 15.73 412 12.100 375 –
4×2.5 0.7 16.82 486 7.410 425 –
4×4 0.7 18.13 585 4.610 488 –
4×6 0.7 20.33 843 3.080 696 –
4×10 0.7 22.12 1064 1.830 819 3.08
4×16 0.7 25.24 1527 1.150 1136 1.91
4×25 0.9 29.12 2064 0.727 1453 1.2
4×35 0.9 31.50 2534 0.524 1679 0.868
4×50 1.0 35.48 3293 0.387 2072 0.641
4×70 1.1 40.44 4540 0.268 2831 0.443
4×95 1.1 45.08 5737 0.193 3418 0.32
4×120 1.2 50.24 7380 0.153 4450 0.253
4×150 1.4 54.64 8822 0.124 5160 0.206
4×185 1.6 59.66 10515 0.099 6003 0.164
4×240 1.7 66.13 13075 0.075 7222 0.125
4×300 1.8 71.78 15717 0.060 8400 0.1
4×400 2.0 81.01 20968 0.047 11212 0.0778

5-Core Armoured LSZH Cable

Conductor Size (mm²) Nominal Insulation Thickness (mm) Nominal Overall Diameter (mm) Approx. Net Weight - Cu (kg/km) Max Cu Conductor Resistance @20°C (Ω/km) Approx. Net Weight - Al (kg/km) Max Al Conductor Resistance @20°C (Ω/km)
5×1.5 0.7 16.55 456 12.100 410 –
5×2.5 0.7 17.77 544 7.410 468 –
5×4 0.7 20.12 801 4.610 679 –
5×6 0.7 21.58 955 3.080 772 –
5×10 0.7 23.58 1223 1.830 917 3.08
5×16 0.7 26.98 1765 1.150 1276 1.91
5×25 0.9 31.78 2442 0.727 1678 1.2
5×35 0.9 34.68 3032 0.524 1963 0.868
5×50 1.0 39.82 4243 0.387 2718 0.641
5×70 1.1 44.00 5415 0.268 3279 0.443
5×95 1.1 50.67 7379 0.193 4480 0.32
5×120 1.2 54.85 8837 0.153 5175 0.253
5×150 1.4 59.87 10622 0.124 6045 0.206
5×185 1.6 65.92 12778 0.099 7138 0.164
5×240 1.7 72.41 15807 0.075 8490 0.125
5×300 1.8 80.60 20084 0.060 10938 0.1
5×400 2.0 90.22 25617 0.047 13422 0.0778