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Circuit-Integrity Fire-Resistant Fibre Optic CablesOS2 / OM3 / OM4FE180 / E30–E90IEC 60331-25 Fibre

Fire-Resistant FO FE180 Circuit-Integrity Fibre Optic CableFE180 / E30–E90 circuit-integrity metal-tube & corrugated-steel armoured LSZH fibre optic

HITRONIC FIRE is a circuit-integrity optical fibre backbone cable engineered to maintain uninterrupted optical data transmission for 180 minutes in direct 750–850 °C flame (IEC 60331-25 FE180) and 30 to 90 minutes in furnace system testing (DIN 4102-12 E30/E90

FE180 / E30–E90

IEC 60331-25

Rodent Armoured LSZH

Fibres & Mode

Order designation: HITRONIC FIRE 12G50/125 OM3 FE180/E90
Outer Ø ≈: 10.5 mm
Copper weight: 0 kg/km
Total weight ≈: 142 kg/km
Min. bend R: 158 mm

All sizes (13)

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

Fibre counts: 4 to 48 fibres
Fire integrity: FE180 E30–E90
Fibre grades: OS2 / OM3 / OM4
Armouring: Corrugated steel
Operating temp: -30 to +70 °C
Min. bend radius: 15×D / 20×D

Typical values for this cable type, based on IEC 60331-25 / DIN 4102-12 — confirmed in the datasheet and quotation for your order.

Application fit

Is Fire-Resistant FO FE180 right for your machine?

Critical optical communication backbone for networked fire alarm panels (FACP ring buses), metro and road tunnel SCADA/CCTV, airport life-safety networks and redundant data-centre emergency interconnects.

Fixed installation

Suitable

Certified for fixed installation on DIN 4102-12 E30–E90 cable trays, ladders and ceiling clamps.

TBM gantry & advancing tunnel reel

Suitable

Corrugated steel tape armour and glass yarns provide rodent immunity and zero-halogen tunnel safety.

Switchgear & control cabinet wiring

Suitable

Terminates in ODF splice trays for networked fire alarm loops, PA/VA audio rings and emergency PLC links.

Motorised monospiral reel

Not suitable

Corrugated steel tape armoured fire-survival optical cable is strictly for fixed routing.

S07HXCHX-F screened flex

Typical machinesMetro, rail & road tunnelsNetworked fire alarm ringsAirports & high-rise towersHospitals & emergency commandRefinery & power plant ESD links

Construction

Layer by layer

250 µm optical fibres (OS2/OM3/OM4) inside laser-welded stainless-steel / fire-barrier central loose tube + E-glass yarn strength & thermal barrier + corrugated steel tape armour + LSZH outer sheath.

Schematic, not to scale — generated from the layer data

#	Layer	Material & reference
1	Optical glass fibres (OS2 / OM3 / OM4)	4 to 48 colour-coded 250 µm acrylate-coated silica optical fibres per IEC 60793-2-50 / -10IEC 60793-2
2	Metallic / fire-resistant central loose tube	Thixotropic gel-filled stainless-steel or mica-wrapped composite loose buffer tube protecting fibres from thermal crushIEC 60794-1
3	Glass-roving & mica thermal barrier	High-density E-glass roving yarns and phlogopite mica flame barrier tape providing tensile strength and thermal insulationIEC 60331-25
4	Corrugated steel tape armour (CST)	Longitudinally formed and overlapped corrugated steel tape providing crush, impact and 100 % rodent protectionIEC 60794-1
5	LSZH fire-safety outer sheath	Halogen-free, low-smoke flame-retardant thermoplastic compound (Orange, Red or Black)IEC 60332-3-24

HITRONIC FIRE OS2 (9/125 µm Single-Mode)

ITU-T G.652.D / G.657.A1 single-mode fibres for multi-kilometre tunnel SCADA, railway signalling and campus fire rings.

HITRONIC FIRE OM3 / OM4 (50/125 µm Multimode)

Laser-optimised 50/125 µm multimode fibres for high-speed building risers, hospital backbones and PA/VA networks.

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on IEC 60331-25 / DIN 4102-12. Values for your order are confirmed in the datasheet and quotation.

Electrical

Dielectric / metallic classification: Metal-armoured optical cable (CST armour requires equipotential earthing at entry)
Max. attenuation increase in fire: ≤0.5 dB/km (or link budget continuity) during 180 min @ 750 °C

Thermal

Operating temperature range: -30 °C to +70 °C
Installation temperature range: -10 °C to +50 °C
Fire endurance temperature: ≥750 °C (IEC 60331-25) / up to 1000 °C (DIN 4102-12 E30–E90)

Mechanical

Min. bend radius (static / dynamic): 15 × cable OD (fixed) · 20 × cable OD (during pulling)
Max. tensile pulling load: 2000 N (short-term installation) · 1000 N (permanent)
Crush resistance: ≥3000 N/100 mm per IEC 60794-1-21 Method E3

Optical

Attenuation OS2 @ 1310 / 1550 nm: ≤0.36 dB/km @ 1310 nm · ≤0.22 dB/km @ 1550 nm
Attenuation OM3 / OM4 @ 850 / 1300 nm: ≤2.5 dB/km @ 850 nm · ≤0.7 dB/km @ 1300 nm
Bandwidth OM3 / OM4 @ 850 nm: OM3 ≥2000 MHz·km · OM4 ≥4700 MHz·km (EMB)

Resistance

Optical circuit integrity in fire: FE180 (180 min @ ≥750 °C + 15 min cool-down per IEC 60331-25)
System functional integrity: E30 / E60 / E90 per DIN 4102-12
Flame, smoke & halogen: IEC 60332-3-24 Cat. C, IEC 61034-2 (≥60 %), IEC 60754-2 (pH ≥4.3)

Reference standards

Fire test standard: IEC 60331-25 & DIN 4102-12
Optical cable standard: IEC 60794-1-21 / IEC 60794-1-22 & ISO/IEC 11801

Identification

Fibre colour code: IEC 60304 / DIN VDE 0888 12-colour sequence
Outer sheath colour: Orange (RAL 2003), Red (RAL 3000) or Black

Sizes

13 standard configurations (HITRONIC FIRE)

Nominal dimensions, masses and electrical ratings for HITRONIC FIRE according to IEC 60331-25 / DIN 4102-12.

Dimensions & masses
Designation	Fibres & Mode	Core/Clad µm	Outer Ø ≈ mm	Copper kg/km	Total weight ≈ kg/km	Min. bend R fixed mm
HITRONIC FIRE standard series
HITRONIC FIRE 4G50/125 OM3 FE180/E90	4F OM3 Multimode	50/125 µm	10.2	0	135	153
HITRONIC FIRE 8G50/125 OM3 FE180/E90	8F OM3 Multimode	50/125 µm	10.2	0	136	153
HITRONIC FIRE 12G50/125 OM3 FE180/E90	12F OM3 Multimode	50/125 µm	10.5	0	142	158
HITRONIC FIRE 24G50/125 OM3 FE180/E90	24F OM3 Multimode	50/125 µm	11.4	0	168	171
HITRONIC FIRE 4G50/125 OM4 FE180/E90	4F OM4 Multimode	50/125 µm	10.2	0	135	153
HITRONIC FIRE 8G50/125 OM4 FE180/E90	8F OM4 Multimode	50/125 µm	10.2	0	136	153
HITRONIC FIRE 12G50/125 OM4 FE180/E90	12F OM4 Multimode	50/125 µm	10.5	0	142	158
HITRONIC FIRE 24G50/125 OM4 FE180/E90	24F OM4 Multimode	50/125 µm	11.4	0	168	171
HITRONIC FIRE 4E9/125 OS2 FE180/E90	4F OS2 Single-Mode	9/125 µm	10.2	0	135	153
HITRONIC FIRE 8E9/125 OS2 FE180/E90	8F OS2 Single-Mode	9/125 µm	10.2	0	136	153
HITRONIC FIRE 12E9/125 OS2 FE180/E90	12F OS2 Single-Mode	9/125 µm	10.5	0	142	158
HITRONIC FIRE 24E9/125 OS2 FE180/E90	24F OS2 Single-Mode	9/125 µm	11.4	0	168	171
HITRONIC FIRE 48E9/125 OS2 FE180/E90	48F OS2 Single-Mode	9/125 µm	13.8	0	235	207

Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
Nominal outer diameters and weights are subject to manufacturing tolerances per IEC 60331-25 / DIN 4102-12.

Electrical data
Fibres & Mode	Max. DC R @ 20 °C Ω/km	Current in air A	Current in duct/tray A
4F OM3 Multimode	0.350	2,000	1,720
8F OM3 Multimode	0.350	2,000	1,720
12F OM3 Multimode	0.350	2,000	1,720
24F OM3 Multimode	0.350	2,000	1,720
4F OM4 Multimode	0.350	2,000	1,720
8F OM4 Multimode	0.350	2,000	1,720
12F OM4 Multimode	0.350	2,000	1,720
24F OM4 Multimode	0.350	2,000	1,720
4F OS2 Single-Mode	0.220	2,000	1,720
8F OS2 Single-Mode	0.220	2,000	1,720
12F OS2 Single-Mode	0.220	2,000	1,720
24F OS2 Single-Mode	0.220	2,000	1,720
48F OS2 Single-Mode	0.220	2,500	2,150

Current ratings apply at +30 °C ambient in free air and +25 °C in enclosed tray/conduit.

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
100 % OTDR optical attenuation & continuity trace	Attenuation ≤0.36/0.22 dB/km (OS2) or ≤2.5/0.7 dB/km (OM3/OM4) with zero point defects	100 % of fibres on every drum
Sample tests
IEC 60331-25 optical circuit integrity under fire (FE180)	180 minutes at ≥750 °C flame + 15 min cooling with optical attenuation increase within limit	Type qualification
DIN 4102-12 furnace functional endurance (E30–E90)	30 to 90 minutes optical transmission survival up to 1000 °C on tested tray systems	Type qualification

Inspection certificate

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

Product approvals

IEC 60331-25 FE180DIN 4102-12 E30 / E60 / E90IEC 60332-3-24 Cat. CIEC 60754-2 & IEC 61034-2ITU-T G.652.D / ISO/IEC 11801

Company certificates

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

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX HITRONIC FIRE 12E9/125 OS2 FE180/E90 IEC 60331-25 DIN 4102-12 LSZH [year] [meter mark]

Delivery form: Fumigated export wooden drums or shrink-wrapped coils
Standard drum lengths: 500 m · 1000 m standard drums (cut lengths on request)
MOQ: 100 m (stock sizes) · 300–500 m (production)
Lead time: 2–4 weeks ex-works
Incoterms: EXW, FOB, CIF, DAP

Technical documents

Downloads

PDFFire-Resistant FO FE180 Circuit-Integrity Fibre Optic Cable – technical datasheet13 sizes · construction, technical data, approvals XLSXFire-Resistant FO FE180 spec data (Excel)All 13 sizes with dimensions and data, for your BOM or quotation

Revision: 2026-10-20
Updated: 2026-10-20

FAQ

Questions engineers ask first

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

How can glass optical fibres survive a 750–1000 °C fire when standard loose-tube cables fail in minutes?

In standard plastic loose-tube cables, melting PBT tubes and shrinking jackets buckle the glass fibres and cause severe micro-bending loss. HITRONIC FIRE houses the fibres inside a laser-welded stainless-steel / mica-protected tube surrounded by E-glass yarn and corrugated steel armour so the fibres remain mechanically stress-free at 850–1000 °C.

What does IEC 60331-25 verify on fire-resistant fibre optic cables?

IEC 60331-25 exposes a horizontal specimen of the optical cable to a ≥750 °C ribbon burner flame for up to 180 minutes (FE180) while continuously monitoring optical power attenuation at 1310/1550 nm (single-mode) or 850/1300 nm (multimode) to verify uninterrupted transmission.

Should OS2 single-mode or OM3/OM4 multimode be chosen for fire alarm panel ring networks?

Choose OS2 (9/125 µm single-mode) when networked Fire Alarm Control Panels (FACPs), tunnel ventilation PLCs or metro station nodes are separated by more than 500 m (up to 10–40 km). Choose OM3 or OM4 (50/125 µm multimode) for building risers and campus rings under 500 m.

Does the corrugated steel tape armour protect against rodents in tunnels and cable ducts?

Yes. The overlapped longitudinal corrugated steel tape (CST) plus dense E-glass roving layer forms a 100 % rodent-proof barrier and provides ≥3000 N/100 mm crush resistance without requiring external steel conduit.

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Fire-Resistant FO FE180 Circuit-Integrity Fibre Optic Cable

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Datasheet Request a quote

Fire-Resistant FO FE180 Circuit-Integrity Fibre Optic CableFE180 / E30–E90 circuit-integrity metal-tube & corrugated-steel armoured LSZH fibre optic

Fixed installation

TBM gantry & advancing tunnel reel

Switchgear & control cabinet wiring

Motorised monospiral reel

HITRONIC FIRE OS2 (9/125 µm Single-Mode)

HITRONIC FIRE OM3 / OM4 (50/125 µm Multimode)

Electrical

Thermal

Mechanical

Optical

Resistance

Reference standards

Identification

Inspection certificate

Product approvals

Company certificates

01Selected sizes

02Reel & motion

03Message for our engineers

A-H(L)HBH

A-HHBH

NHXH FE180 E30–E90

BS 7629-1 Standard 30 / Enhanced 120