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6381B 600/1000V Class 5 Copper XLPE LSZH Single Core Cable
6381B 600/1000V single core cable with Class 5 bare copper, GP8 XLPE insulation and LTS4 LSZH sheath. Listed sizes 1.5-630 mm2 for telecom power, switchgear, cabinets and protected fixed wiring.
6381B to BS7211 & IEC 60502.pdf Contact us

APPLICATION

BURY CABLE 6381B single core cable connects telecom power supplies, switchgear, distribution cabinets and building services on protected fixed routes. Its Class 5 bare copper conductor supports routing and termination in equipment rooms and confined cabinet spaces. GP8 XLPE insulation and an LTS4 LSZH sheath combine a 600/1000V working voltage with low smoke, halogen free sheath construction. The dimensional range covers 1.5-630 mm².

Cable Construction

  • - Bare copper conductor

  • - Stranding to BS6360 CL-5 or IEC60228 CL-5

  • - XLPE(Cross-Linked Polyethylene) GP8 insulation

  • - LSOH(Low Smoke Zero Halogen) LTS4 sheath

Sheath/Core Identification

  • Blue (Blue), Grey (Grey), Green/Yellow (Green/Yellow), Brown (Brown), Special colours to order

Technical Characteristics

  • - Working voltage: 600/1000V

  • - Minimum bending radius: up to 50 mmsq : 3xoverall diameter,
    70mmsq and above: - 4xoverall diameter

  • - Operating temperature: 0o C to +90o C

  • - Insulation resistance: 10 MΩxkm

  • - Flame retardant: IEC 60332.1, BS4066 Part 1

Cable Parameter

AWG
(No of Strands/
Strand Diameter)
No. of Cores x
Nominal Cross
Sectional Area
# x mmsq
Nominal
Thickness of
Insulation
mm
Nominal
Thickness of
Sheath
mm
Nominal
Overall
Diameter
mm
Nominal
Weight
kg/km
16(30/30)1x1.50.90.85.242
14(50/30)1x2.50.90.85.754
12(56/28)1x410.96.677
10(84/28)1x61.10.97.3102
8(80/26)1x101.218.6160
6(128/26)1x161.219.6210
4(200/26)1x251.41.111.5320
2(280/26)1x351.41.112.8420
1(400/26)1x501.41.414.9590
2/0(356/24)1x701.41.417.2810
3/0(485/24)1x951.61.518.61020
4/0(614/24)1x1201.61.820.81285
300MCM (765/24)1x1501.81.823.11610
350MCM (944/24)1x18521.825.31940
500MCM(1225/24)1x2402.21.827.82480
-(1525/24)1x3002.4231.23050
-(2013/24)1x4002.62.135.34035
-(1769/23)1x5002.82.238.84970
-(2257/23)1x6302.82.443.86510

KEY FEATURES

  • Class 5 bare copper conductor to the stated BS 6360 / IEC 60228 construction.

  • GP8 XLPE insulation and LTS4 LSZH sheath, with a separate protective outer layer.

  • Single core sizes from 1.5 to 630 mm²; the original table provides stranding, insulation and sheath thickness, diameter and weight.

SELECTION NOTES

  • Choose conductor size for circuit load, voltage drop, installation conditions and terminal capacity; specify each required cable length.

  • Allow a bending radius of at least 3 times overall diameter up to 50 mm², and 4 times overall diameter from 70 mm².

  • Specify sheath/core colour, protected route and packing. The listed colours include blue, grey, green/yellow and brown, with special colours to order.

RELATED CABLE TYPES

FAQ

What is 6381B cable used for?

It is used for telecom power, equipment rooms, switchgear and protected fixed low voltage wiring where an LSZH sheath is required.

What is the working voltage of this 6381B range?

The listed working voltage is 600/1000V.

Which conductor construction is used?

The cable uses a flexible Class 5 bare copper conductor with GP8 XLPE insulation and an LTS4 LSZH sheath.

Which conductor sizes are listed?

The cable parameter table covers single core sizes from 1.5 to 630 mm², including nominal diameters and weights.

How does 6381B differ from 6381Y?

6381B combines XLPE insulation and an LSZH sheath. The related 6381Y construction uses PVC insulation and a PVC sheath.