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Product

marine & offshore instrumentation cable NEK TS 606 / IEC 60092-376150/250 V (-40 to +90 °C)Blue Ex-i / Grey SHF2-MUD Jacket (S3

BFOU(i) S3/S7 & BFOU(c) S4/S8 250 V NEK 606 Fire-Resistant Offshore Instrumentation CableNEK TS 606 / IEC 60092-376 — 150/250 V — -40 to +90 °C Marine & Offshore Cable

BFOU(i) S3/S7 & BFOU(c) S4/S8 250 V NEK 606 Fire-Resistant Offshore Instrumentation Cable (NEK TS 606 / IEC 60092-376) engineered for 150/250 V service across -40 to +90 °C (min. bend radius 8 × OD).

Flame-retardant

EMC screen

Oil-resistant

Approved

Configuration

Order designation: BFOU(I) S3 2×2×0.75 mm²
Outer Ø ≈: 11.4 mm
Net weight ≈: 195 kg/km
Tensile rating ≈: 1.2 kN
Core / stranding: Stranded Cu/SnCu (IEC 60228 Class 2/5)

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: 150/250 V
Operating temp.: −40…+90 °C
Min. bend radius: 8 × OD
Core / conductor: Mica + EPR Twist
Outer protection: Blue Ex-i / Grey
Standard: NEK TS 606 / IEC

Typical values for this cable type, based on NEK TS 606 Code S3/S7/S103 & S4/S8/S104 / IEC 60092-376 / IEC 60331 — confirmed in the datasheet and quotation for your order.

Application fit

Is BFOU(I) S3/S7 & BFOU(C) S4/S8 250 V right for your machine?

Fixed installation

Suitable

Individually and/or collectively screened pairs, triads and quads reject electrostatic and electromagnetic interference.

Offshore platform & shipboard deck trays

Suitable

SHF1/SHF2 or IEEE 1580 Type P outer sheath resists drilling mud, hydrocarbons, salt spray and UV exposure.

Switchgear & control cabinet wiring

Suitable

Compact twisted pairs and numbered cores route cleanly into DCS/PLC cabinets, Ex-i barriers and bridge consoles.

Drilling jumbo & rotary mast feed

Suitable

Tinned copper, bronze or galvanized steel wire braid armour protects signal integrity in hazardous offshore zones.

Festoon & line chain

Not suitable

Fixed shipboard and offshore instrumentation cable is not intended for high-speed crane festoon loops.

Use (N)3GRDC5G-J/O Festoon Cable

Typical machinesMarine & Offshore CableOffshore DCS, ESD & Fire-Gas SystemsShipboard Bridge & Engine Room AutomationDrilling Rig Instrumentation & Mud LoggingNaval Radar, Sonar & Combat Switchboards

Construction

Layer by layer

Shown: BFOU(I) S3/S7 & BFOU(C) S4/S8 250 V (NEK TS 606 Code S3/S7/S103 & S4/S8/S104 / IEC 60092-376 / IEC 60331) featuring mica + epr twisted pairs (8×2×1.0 mm²), individual pair foil screen (bfou(i)) and blue ex-i / grey shf2-mud jacket (s3/s7) (5-layer construction).

Schematic, not to scale — generated from the layer data

#	Layer	Material & reference
1	Mica + EPR Twisted Pairs (8×2×1.0 mm²)	Tinned copper conductors with mica fire tape and Black/White EPR insulation
2	Individual Pair Foil Screen (BFOU(i))	Color-coded/numbered Al/PET foil tape + tinned copper drain wire per pair
3	SHF2 Elastomeric Inner Bedding	Flame-retardant halogen-free thermoset inner sheath
4	Tinned Copper Braid Armour (TCWB)	High-coverage tinned copper wire braid screen and armour
5	Blue Ex-i / Grey SHF2-MUD Jacket (S3/S7)	Mud-resistant thermoset outer sheath (Blue for Intrinsically Safe circuits)

BFOU(I) S3/S7 & BFOU(C) S4/S8 250 V — Standard Shipboard & Offshore Execution

Built to NEK TS 606 Code S3/S7/S103 & S4/S8/S104 / IEC 60092-376 / IEC 60331 with mica + epr twisted pairs (8×2×1.0 mm²) and blue ex-i / grey shf2-mud jacket (s3/s7)

BFOU(I) S3/S7 & BFOU(C) S4/S8 250 V — Custom Drum Length & Gland Kit

Available in custom continuous shipboard/offshore drum lengths or with marine EMC cable glands

BFOU(I) S3/S7 & BFOU(C) S4/S8 250 V — Class & Routine Test Certified

Supplied with EN 10204 3.1 routine dielectric, conductor resistance & flame/fire test report

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on NEK TS 606 Code S3/S7/S103 & S4/S8/S104 / IEC 60092-376 / IEC 60331. Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated voltage / transmission duty: 150/250 V (NEK TS 606 Code S3/S7/S103 & S4/S8/S104 / IEC 60092-376 / IEC 60331)
Core / conductor construction: Mica + EPR Twisted Pairs (8×2×1.0 mm²) — Tinned copper conductors with mica fire tape and Black/White EPR insulation
Primary dielectric / buffering: Individual Pair Foil Screen (BFOU(i)) — Color-coded/numbered Al/PET foil tape + tinned copper drain wire per pair

Thermal

Continuous operating temperature: −40…+90 °C (shipboard & offshore duty)
Short-circuit / peak thermal rating: Verified thermal stability per NEK TS 606 Code S3/S7/S103 & S4/S8/S104 / IEC 60092-376 / IEC 60331
Storage & transport temperature: −40…+80 °C on export wooden/steel drum

Mechanical

Outer protection / armouring: Blue Ex-i / Grey SHF2-MUD Jacket (S3/S7) — Mud-resistant thermoset outer sheath (Blue for Intrinsically Safe circuits)
Minimum bending radius: 8 × OD
Armour, screen & mechanical duty: Tinned Copper Braid Armour (TCWB) — High-coverage tinned copper wire braid screen and armour

Resistance

Flame, fire & smoke performance: Qualified for marine flame-retardance and low-smoke zero-halogen / fire safety per NEK TS 606 Code S3/S7/S103 & S4/S8/S104 / IEC 60092-376 / IEC 60331
Oil, drilling mud & seawater resistance: Resistant to marine fuel/lube oils, salt mist and offshore fluids per NEK TS 606 Code S3/S7/S103 & S4/S8/S104 / IEC 60092-376 / IEC 60331
RoHS & REACH compliance: RoHS 2 (2011/65/EU + 2015/863) & REACH SVHC compliant

Reference standards

Governing standard: NEK TS 606 Code S3/S7/S103 & S4/S8/S104 / IEC 60092-376 / IEC 60331
Environmental & test standards: IEC 60228 / IEC 60332-3-22 / IEC 60754 / IEC 61034 / EN 10204
Quality management & inspection: ISO 9001:2015 & EN 10204 3.1 factory routine inspection

Identification

Model designation: BFOU(I) S3/S7 & BFOU(C) S4/S8 250 V
Sheath colour & metre marking: Continuous metre-marked black outer finish (Blue Ex-i / Grey)
Customs tariff (HS): 8544.49 / 8544.60 / 8544.70

Sizes

3 standard BFOU(I) S3/S7 & BFOU(C) S4/S8 250 V shipboard & offshore configurations

Manufactured to NEK TS 606 Code S3/S7/S103 & S4/S8/S104 / IEC 60092-376 / IEC 60331 for shipboard, offshore platform, drilling rig and marine applications.

Dimensions, tensile load & weights
Order designation	Configuration	Core / stranding	Outer Ø ≈ mm	Net weight ≈ kg/km	Tensile rating kN ≈	Min. bend R mm
BFOU(I) S3/S7 & BFOU(C) S4/S8 250 V Construction Schedule (−40…+90 °C)
BFOU(I) S3 2×2×0.75 mm²	2 × 2 × 0.75 mm² (2Pr)	Stranded Cu/SnCu (IEC 60228 Class 2/5)	11.4	195	1.2	70
BFOU(I) S3 4×2×1.0 mm²	4 × 2 × 1.0 mm² (4Pr)	Stranded Cu/SnCu (IEC 60228 Class 2/5)	15.6	365	2.4	95
BFOU(I) S3 8×2×1.5 mm²	8 × 2 × 1.5 mm² (8Pr)	Stranded Cu/SnCu (IEC 60228 Class 2/5)	22.8	760	4.8	140

Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
Custom core cross-sections, pair/fibre counts, armour grades and factory drum lengths available per NEK TS 606 Code S3/S7/S103 & S4/S8/S104 / IEC 60092-376 / IEC 60331.

Electrical, optical & thermal parameters
Configuration	Max. DC R₂₀ / Atten. Ω/km or dB/km	Rating / Impedance	Operating temp.
2 × 2 × 0.75 mm² (2Pr)	26.00	150/250 V (≤60 nF/km)	−40…+90 °C
4 × 2 × 1.0 mm² (4Pr)	19.50	150/250 V (≤65 nF/km)	−40…+90 °C
8 × 2 × 1.5 mm² (8Pr)	13.30	150/250 V (≤75 nF/km)	−40…+90 °C

Every production length undergoes routine conductor DC resistance, high-voltage dielectric or OTDR continuity 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 resistance, continuity & dimensional verification (NEK TS 606 Code S3/S7/S103 & S4/S8/S104 / IEC 60092-376 / IEC 60331)	DC resistance at 20 °C / optical attenuation and outer diameter within NEK TS 606 Code S3/S7/S103 & S4/S8/S104 / IEC 60092-376 / IEC 60331 tolerances	Every manufactured drum length
High-voltage dielectric & insulation resistance test (NEK TS 606 Code S3/S7/S103 & S4/S8/S104 / IEC 60092-376 / IEC 60331)	Zero dielectric breakdown and verified insulation resistance for 150/250 V rating	Every manufactured drum length
Sample tests
Flame, fire integrity, oil/mud & mechanical qualification (NEK TS 606 Code S3/S7/S103 & S4/S8/S104 / IEC 60092-376 / IEC 60331)	Verified flame/fire performance, fluid resistance and thermal stability 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

NEK TS 606 / IEC 60092-376 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 BFOU(I) S3/S7 & BFOU(C) S4/S8 250 V NEK TS 606 / IEC 60092-376 150/250 V CE

Delivery form: Heavy-duty export fumigated wooden drums or steel marine reels
Standard lengths: 500 m, 1,000 m or custom continuous shipboard/offshore lengths
MOQ: 100 m (standard configurations) · 500 m (custom builds)
Lead time: 2–5 weeks ex-works
Incoterms: EXW, FCA, FOB, CIF, DAP

Technical documents

Downloads

PDFBFOU(i) S3/S7 & BFOU(c) S4/S8 250 V NEK 606 Fire-Resistant Offshore In – technical datasheet3 sizes · construction, technical data, approvals XLSXBFOU(I) S3/S7 & BFOU(C) S4/S8 250 V spec data (Excel)All 3 sizes with dimensions and data, for your BOM or quotation

Revision: 2026-10-25
Updated: 2026-10-25

FAQ

Questions engineers ask first

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

What governing standard and construction define BFOU(I) S3/S7 & BFOU(C) S4/S8 250 V (BFOU(i) S3/S7 & BFOU(c) S4/S8 250 V NEK 606 Fire-Resistant Offshore Instrumentation Cable)?

BFOU(I) S3/S7 & BFOU(C) S4/S8 250 V (BFOU(i) S3/S7 & BFOU(c) S4/S8 250 V NEK 606 Fire-Resistant Offshore Instrumentation Cable) is manufactured in accordance with NEK TS 606 Code S3/S7/S103 & S4/S8/S104 / IEC 60092-376 / IEC 60331 for 150/250 V service over -40 to +90 °C. Its 5-layer construction comprises mica + epr twisted pairs (8×2×1.0 mm²), individual pair foil screen (bfou(i)) and blue ex-i / grey shf2-mud jacket (s3/s7).

What is the minimum bending radius and operating temperature range for BFOU(I) S3/S7 & BFOU(C) S4/S8 250 V?

The minimum bending radius for BFOU(I) S3/S7 & BFOU(C) S4/S8 250 V is 8 × OD across its continuous operating temperature range of -40 to +90 °C, ensuring mechanical and dielectric reliability in shipboard and offshore service.

How are the concentric layers of BFOU(I) S3/S7 & BFOU(C) S4/S8 250 V arranged from inside to outside?

From inside to outside, the construction sequence is: (01) Mica + EPR Twisted Pairs (8×2×1.0 mm²) — Tinned copper conductors with mica fire tape and Black/White EPR insulation; (02) Individual Pair Foil Screen (BFOU(i)) — Color-coded/numbered Al/PET foil tape + tinned copper drain wire per pair; (03) SHF2 Elastomeric Inner Bedding — Flame-retardant halogen-free thermoset inner sheath; (04) Tinned Copper Braid Armour (TCWB) — High-coverage tinned copper wire braid screen and armour; (05) Blue Ex-i / Grey SHF2-MUD Jacket (S3/S7) — Mud-resistant thermoset outer sheath (Blue for Intrinsically Safe circuits).

What factory test certificates are supplied with BFOU(I) S3/S7 & BFOU(C) S4/S8 250 V?

Every production drum of BFOU(I) S3/S7 & BFOU(C) S4/S8 250 V undergoes routine conductor resistance/continuity, high-voltage dielectric and dimensional testing per NEK TS 606 Code S3/S7/S103 & S4/S8/S104 / IEC 60092-376 / IEC 60331, and is delivered with an EN 10204 3.1 factory test certificate.

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03Message for our engineers

BFOU(i) S3/S7 & BFOU(c) S4/S8 250 V NEK 606 Fire-Resistant Offshore Instrumentation Cable

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