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Product

submersible aquaculture, pump & marine rubber cable BS 6920 WRAS / KTW / EN 50525450/750 V (0.6/1 kV) (-40 to +90 °C)Subsea / Marine Outer Protective She

WRAS KTW Clean Water EPDM Submersible Pump CableBS 6920 WRAS / KTW / EN 50525 — 450/750 V (0.6/1 kV) — -40 to +90 °C Subsea & Marine Cable

WRAS KTW Clean Water EPDM Submersible Pump Cable featuring flexible stranded copper conductors (4 cores) and subsea / marine outer protective sheath (BS 6920 WRAS / KTW / EN 50525, 450/750 V (0.6/1 kV), -40 to +90 °C).

Water-resistant

Oil-resistant

Outdoor & humid

Approved

Configuration

Order designation: WRAS 4G4.0 mm²
Outer Ø ≈: 14.2 mm
Net weight ≈: 340 kg/km
Max. pulling ≈: 3.2 kN
Core / stranding: IEC 60228 Class 5 Cu/SnCu

All sizes (3)

Request a quote Datasheet WhatsApp info@tebaoflex.com

Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum

Rated voltage: 450/750 V (0.6/1
Operating temp.: −40…+90 °C
Min. bend radius: 5 × OD
Core / conductor: Flexible Strande
Outer protection: Subsea / Marine
Standard: BS 6920 WRAS / K

Typical values for this cable type, based on BS 6920 WRAS & KTW Approved EPDM Clean-Water Submersible Pump Standard — confirmed in the datasheet and quotation for your order.

Application fit

Is WRAS/KTW EPDM Pump Cable right for your machine?

Immersion & wet locations

Suitable

Cross-linked EPDM, polychloroprene or subsea PUR elastomer compounds provide low water absorption and AD8 permanent immersion integrity.

Free-hanging vertical run

Suitable

IEC 60228 Class 5 flexible copper conductors support suspended vertical riser drops in deep wells, sea cages and submersible pump shafts.

Fixed installation

Suitable

Installs cleanly along floating fish-farm walkways, mooring collars, hatchery basins and subsea pumping stations.

Offshore platform & shipboard deck trays

Suitable

Withstands salt mist, ozone, UV exposure, fish oil and mechanical wave flexing in coastal and offshore aquaculture farms.

Motorised monospiral reel

Not suitable

Submersible pump and aquaculture rubber cables are not intended for high-speed horizontal crane reeling drums.

Use RT-PUR-HF Reeling Cable

Typical machinesUnderwater & Ocean ExplorationOffshore & Coastal Aquaculture Cage Power DistributionSubmersible Aerators, Blowers & Clean-Water Well PumpsWRAS / KTW Hatchery & Potable Water Pumping SystemsSubmersible Pool, Reservoir & Tank Cleaning Robots

Construction

Layer by layer

Shown: WRAS/KTW EPDM Pump Cable (BS 6920 WRAS & KTW Approved EPDM Clean-Water Submersible Pump Standard) featuring flexible stranded copper conductors (4 cores), cross-linked elastomeric / polymer core insulation and subsea / marine outer protective sheath (4-layer construction).

WRAS/KTW EPDM Pump Cable — stepped horizontal cutaway showing Flexible Stranded Copper Conductors (4 Cores) and Subsea — Layer cutaway

#	Layer	Material & reference
1	Flexible Stranded Copper Conductors (4 C	Class 5 / class 6 copper conductors
2	Cross-Linked Elastomeric / Polymer Core	Ethylene-propyiene rubber (epr/epdm) insulation
3	Water-Blocking Tape & Inner Bedding	Hydrostatic water-blocking filler and low-friction separator wrap
4	Subsea / Marine Outer Protective Sheath	Blue clean-water non-toxic EPDM rubber outer sheath (AD8)

WRAS/KTW EPDM Pump Cable — Standard Subsea & Marine Execution

Built to BS 6920 WRAS & KTW Approved EPDM Clean-Water Submersible Pump Standard with flexible stranded copper conductors (4 cores) and subsea / marine outer protective sheath

WRAS/KTW EPDM Pump Cable — Custom Winch Length / Molded Termination

Available on continuous export winch drums or factory-terminated with subsea wet-mate / mechanical sockets

WRAS/KTW EPDM Pump Cable — Hydrostatic & Routine Certified

Supplied with EN 10204 3.1 routine dielectric, conductor/optical continuity & hydrostatic qualification report

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on BS 6920 WRAS & KTW Approved EPDM Clean-Water Submersible Pump Standard. Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated voltage / operating system: 450/750 V (0.6/1 kV) (BS 6920 WRAS & KTW Approved EPDM Clean-Water Submersible Pump Standard)
Core / conductor construction: Flexible Stranded Copper Conductors (4 Cores) — Class 5 / class 6 copper conductors
Primary dielectric / optical buffer: Cross-Linked Elastomeric / Polymer Core Insulation — Ethylene-propyiene rubber (epr/epdm) insulation

Thermal

Continuous operating temperature: −40…+90 °C (submerged seawater & topside deck service)
Hydrostatic & thermal cycling endurance: Verified cold-bend and wet dielectric stability across −40…+90 °C per BS 6920 WRAS & KTW Approved EPDM Clean-Water Submersible Pump Standard
Storage & transport temperature: −40…+80 °C on export wooden/steel cable drum

Mechanical

Outer jacket / sheath protection: Subsea / Marine Outer Protective Sheath — Blue clean-water non-toxic EPDM rubber outer sheath (AD8)
Minimum bending radius: 5 × OD
Reinforcement / screen / bedding layer: Water-Blocking Tape & Inner Bedding — Hydrostatic water-blocking filler and low-friction separator wrap

Resistance

Seawater, hydrolysis & oil resistance: Resistant to permanent seawater immersion, hydrolysis, hydraulic oil and bio-fouling per BS 6920 WRAS & KTW Approved EPDM Clean-Water Submersible Pump Standard
Hydrostatic pressure & water blocking: Radial and longitudinal water-blocking integrity verified per BS 6920 WRAS & KTW Approved EPDM Clean-Water Submersible Pump Standard
RoHS & REACH compliance: RoHS 2 (2011/65/EU + 2015/863) & REACH SVHC compliant

Reference standards

Governing standard: BS 6920 WRAS & KTW Approved EPDM Clean-Water Submersible Pump Standard
Subsea & conductor qualification standards: IEC 60228 / DNV-ST-E402 / ISO 13628-5 / IEC 60794 / EN 10204
Quality management & inspection: ISO 9001:2015 & EN 10204 3.1 factory routine inspection

Identification

Model designation: WRAS/KTW EPDM Pump Cable
Sheath colour & metre marking: Continuous metre-marked black outer finish (Subsea / Marine )
Customs tariff (HS): 8544.49 / 8544.60 / 8544.70

Sizes

3 standard WRAS/KTW EPDM Pump Cable configurations

Manufactured to BS 6920 WRAS & KTW Approved EPDM Clean-Water Submersible Pump Standard for subsea robotics, ROV umbilicals, marine aquaculture and offshore sensor applications.

Dimensions, tensile load & weights
Order designation	Configuration	Core / stranding	Outer Ø ≈ mm	Net weight ≈ kg/km	Max. pulling kN ≈	Min. bend R mm
WRAS/KTW EPDM Pump Cable Construction Schedule (−40…+90 °C)
WRAS 4G4.0 mm²	4G4.0 mm² (3×4.0 + 1G4.0 / 12 AWG)	IEC 60228 Class 5 Cu/SnCu	14.2	340	3.2	85
WRAS 4G16 mm²	4G16 mm² (3×16 + 1G16 / 6 AWG)	IEC 60228 Class 5 Cu/SnCu	21.4	840	9.6	130
WRAS 3×50+1G25 mm²	3 × 50 + 1G25 mm² (or 3×70+1G35)	IEC 60228 Class 5 Cu/SnCu	32.8	2,240	26.5	195

Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
Custom core counts, optical fiber channels, wet-mate terminations and continuous winch lengths available per BS 6920 WRAS & KTW Approved EPDM Clean-Water Submersible Pump Standard.

Electrical, optical & thermal parameters
Configuration	Max. DC R₂₀ Ω/km	Rating / Impedance / Load	Operating temp.
4G4.0 mm² (3×4.0 + 1G4.0 / 12 AWG)	4.95	450/750 V (0.6/1 kV) (36 A Submersible)	−40…+90 °C
4G16 mm² (3×16 + 1G16 / 6 AWG)	1.21	450/750 V (0.6/1 kV) (98 A Submersible)	−40…+90 °C
3 × 50 + 1G25 mm² (or 3×70+1G35)	0.39	450/750 V (0.6/1 kV) (195 A Feeder)	−40…+90 °C

Every production length undergoes routine conductor DC resistance / OTDR optical attenuation, AC dielectric and dimensional verification.

Quality & approvals

Testing & inspection

Routine tests on every production length, sample and type tests per batch — documented on an EN 10204 3.1 inspection certificate.

ConductorClass 5 stranding
Spark test100 % in-line
Lay-upCores, earth, fillers
SheathingInner, braid / screen, outer
Electrical testsAC voltage, resistance
DimensionsOD, wall thickness
Inspection documents & dispatchDrum & dispatch

Testing & inspection	Test value / reference	Frequency
Routine tests
Conductor DC resistance / OTDR optical & dimensional check (BS 6920 WRAS & KTW Approved EPDM Clean-Water Submersible Pump Standard)	DC resistance at 20 °C, optical attenuation and wall thickness within BS 6920 WRAS & KTW Approved EPDM Clean-Water Submersible Pump Standard limits	Every manufactured drum length
AC high-voltage dielectric & insulation resistance test (BS 6920 WRAS & KTW Approved EPDM Clean-Water Submersible Pump Standard)	Zero dielectric breakdown and verified wet insulation resistance for 450/750 V (0.6/1 kV) rating	Every manufactured drum length
Sample tests
Hydrostatic pressure, tensile load & seawater immersion qualification (BS 6920 WRAS & KTW Approved EPDM Clean-Water Submersible Pump Standard)	Verified hydrostatic pressure integrity, breaking load and flex endurance across −40…+90 °C	Type qualification & periodic lot audit

Inspection certificate

Issued with every drum, listing the routine test results for that length.

Product approvals

BS 6920 WRAS / KTW / EN 50525 CompliantEN 10204 3.1 Factory Test CertificateCE, RoHS 2 (2011/65/EU) & REACH

Company certificates

ISO 9001ISO 14001ISO 45001VDE marks approvalUL / cULCE · LVD / EMC

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX WRAS/KTW EPDM Pump Cable BS 6920 WRAS / KTW / EN 50525 450/750 V (0.6/1 kV) CE

Delivery form: Heavy-duty export fumigated wooden drums, steel winch reels or pre-terminated subsea assemblies
Standard lengths: 500 m, 1,000 m, 3,000 m continuous winch lengths or custom cut-to-length subsea jumpers
MOQ: 100 m (standard configurations) · 300 m (custom subsea builds)
Lead time: 2–4 weeks ex-works
Incoterms: EXW, FCA, FOB, CIF, DAP

Technical documents

Downloads

PDFWRAS KTW Clean Water EPDM Submersible Pump Cable – technical datasheet3 sizes · construction, technical data, approvals XLSXWRAS/KTW EPDM Pump Cable spec data (Excel)All 3 sizes with dimensions and data, for your BOM or quotation

Revision: 2026-10-29
Updated: 2026-10-29

FAQ

Questions engineers ask first

Not covered here? Send your drawing — an engineer replies within 2 business hours.

What governing standard and construction define WRAS/KTW EPDM Pump Cable (WRAS KTW Clean Water EPDM Submersible Pump Cable)?

WRAS/KTW EPDM Pump Cable (WRAS KTW Clean Water EPDM Submersible Pump Cable) is manufactured in accordance with BS 6920 WRAS & KTW Approved EPDM Clean-Water Submersible Pump Standard for 450/750 V (0.6/1 kV) subsea,ROV and marine aquaculture service over -40 to +90 °C. Its 4-layer construction comprises flexible stranded copper conductors (4 cores), cross-linked elastomeric / polymer core insulation and subsea / marine outer protective sheath.

What is the minimum bending radius and operating temperature range for WRAS/KTW EPDM Pump Cable?

The minimum bending radius for WRAS/KTW EPDM Pump Cable is 5 × OD across its continuous operating temperature range of -40 to +90 °C, ensuring mechanical flex endurance and hydrostatic reliability in subsea winches, TMS cages and aquaculture installations.

How are the concentric layers of WRAS/KTW EPDM Pump Cable arranged from inside to outside?

From inside to outside, the construction sequence is: (01) Flexible Stranded Copper Conductors (4 Cores) — Class 5 / class 6 copper conductors; (02) Cross-Linked Elastomeric / Polymer Core Insulation — Ethylene-propyiene rubber (epr/epdm) insulation; (03) Water-Blocking Tape & Inner Bedding — Hydrostatic water-blocking filler and low-friction separator wrap; (04) Subsea / Marine Outer Protective Sheath — Blue clean-water non-toxic EPDM rubber outer sheath (AD8).

What factory test certificates are supplied with WRAS/KTW EPDM Pump Cable?

Every production drum of WRAS/KTW EPDM Pump Cable undergoes routine conductor DC resistance / optical OTDR continuity, AC high-voltage dielectric and dimensional testing per BS 6920 WRAS & KTW Approved EPDM Clean-Water Submersible Pump Standard, and is delivered with an EN 10204 3.1 factory test certificate.

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01Selected sizes

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02Reel & motion

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03Message for our engineers

WRAS KTW Clean Water EPDM Submersible Pump Cable

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