EN 50525-3-21 Halogen-Free Cross-Linked Elastomer Flexible Cables450/750 V (0.6/1 kV)EN 50525-3-21 (H07ZZ-F)EI8 / EM8 LSZH Rubber

S07HXHX Halogen-Free Cross-Linked Elastomer Flexible Power &450/750 V (0.6/1 kV fixed) halogen-free cross-linked elastomer flexible power & control ca

S07HXHX (S07HXHX-F / H07ZZ-F) is a halogen-free cross-linked elastomer flexible power and control cable per EN 50525-3-21. Built with Class 5 fine-stranded copper conductors, EI8 cross-linked LSZH elastomer core insulation and an EM8 heavy-duty cross-linked LS

IEC 60332-3-24 LSZH
EM8 Oil & Abrasion
-40 to +90 °C Flex
Order designation
S07HXHX-F 1×150
Outer Ø ≈
24.8 mm
Copper weight
1,440 kg/km
Total weight ≈
1,690 kg/km
Min. bend R
149 mm
All sizes (16)
Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum
Rated voltage
450/750 V
Up to 0.6/1 kV in protected fixed runs
Conductor
Cu Class 5 flex
Fine-stranded annealed copper
Insulation
EI8 elastomer
Cross-linked LSZH elastomer (+90 °C)
Outer sheath
EM8 elastomer
Heavy-duty cross-linked LSZH rubber
Operating temp
-40 to +90 °C
Fixed -40..+90 °C · Flex -25..+90 °C
Min. bend radius
4×D / 6×D
Fixed 4×OD · Flexible 6×OD

Typical values for this cable type, based on EN 50525-3-21 / H07ZZ-F — confirmed in the datasheet and quotation for your order.

Application fit

Is S07HXHX right for your machine?

Replaces polychloroprene H07RN-F in metro tunnels, airports, hospitals, concert halls, ships and high-occupancy public buildings where flexible power and control leads must be 100 % halogen-free.

Trailing & towing

Suitable

Heavy-duty EM8 cross-linked elastomer sheath handles mobile power distribution, portable tools and stage gear.

Festoon & line chain

Suitable

Class 5 fine stranding and elastic EI8/EM8 rubber compounds suit indoor/tunnel festoon loops.

TBM gantry & advancing tunnel reel

Suitable

Zero halogen acid gas (IEC 60754-2) and low smoke density (IEC 61034-2) for underground tunnel works.

Motorised monospiral reel

With conditions

Suitable for light spring reels; for high-tension crane drums specify anti-torsion reeling cable.

NSHTÖU reeling cable
Typical machinesMetro, rail & road tunnelsAirports, theatres & stadiumsHospitals & data centresShipbuilding & offshore modulesMobile emergency power distribution

Construction

Layer by layer

Class 5 fine-stranded copper conductor + EI8 cross-linked halogen-free elastomer insulation (HX) + EM8 heavy-duty cross-linked halogen-free elastomer outer sheath (HX).

1234
Schematic, not to scale — generated from the layer data
#LayerMaterial & reference
1Class 5 flexible copperFine-stranded bare or tinned annealed copper conductor per IEC 60228 Class 5IEC 60228
2EI8 cross-linked LSZH elastomer (HX)Thermosetting halogen-free elastomeric compound type EI8 per EN 50363-5EN 50363-5
3Halogen-free core separatorNon-hygroscopic separating foil over laid-up cores for clean strippingEN 50525-3-21
4EM8 cross-linked LSZH outer sheath (HX)Heavy-duty cross-linked halogen-free elastomeric compound type EM8 per EN 50363-6, BlackEN 50363-6

S07HXHX-F (1.5 to 300 mm² Power)

1- to 5-core flexible power feeders with HD 308 S2 colour code (-J with GN/YE or -O without).

S07HXHX-F Multi-Core Control (7G to 24G)

Numbered black cores with white digits plus green/yellow earth for mobile control panels and tunnel dampers.

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on EN 50525-3-21 / H07ZZ-F. Values for your order are confirmed in the datasheet and quotation.

Electrical

Nominal voltage U0/U
450/750 V (0.6/1 kV in fixed protected routing)
Routine AC test voltage
2.5 kV rms (50 Hz, 5 min)
Conductor resistance
IEC 60228 Class 5 flexible copper

Thermal

Continuous conductor temp.
+90 °C
Short-circuit conductor temp.
+250 °C (max. 5 s)
Operating temperature range
-40 °C to +90 °C (fixed) · -25 °C to +90 °C (flexible)

Mechanical

Min. bend radius (fixed / flexing)
4 × cable OD (fixed) · 6 × cable OD (flexible movement)
Max. dynamic tensile load
15 N/mm² of total copper cross-section

Resistance

Flame propagation
IEC 60332-3-24 Cat. C & EN 60332-1-2
Halogen acidity & smoke
IEC 60754-2 (pH ≥4.3, ≤10 µS/mm) & IEC 61034-2 (≥60 % light transmittance)
Oil, ozone & UV resistance
EN 60811-404 oil & EN 60811-403 ozone resistant

Reference standards

Harmonised standard
EN 50525-3-21 (H07ZZ-F)
Selection & application guide
EN 50565-1 & DIN VDE 0298-300

Identification

Core identification
HD 308 S2 colours (up to 5 cores) · white numbers on black cores (≥7 cores)
Outer sheath colour
Black

Sizes

16 standard configurations (S07HXHX)

Nominal dimensions, masses and electrical ratings for S07HXHX according to EN 50525-3-21 / H07ZZ-F.

Dimensions & masses
DesignationCores × mm²Cross-sectionOuter Ø ≈
mm
Copper
kg/km
Total weight ≈
kg/km
Min. bend R
fixed mm
Enquiry
S07HXHX standard series
S07HXHX-F 1×501×5050 mm²15.848062095
S07HXHX-F 1×951×9595 mm²20.49121,110122
S07HXHX-F 1×1501×150150 mm²24.81,4401,690149
S07HXHX-F 3G1.53G1.51.5 mm²9.84313059
S07HXHX-F 3G2.53G2.52.5 mm²11.47218568
S07HXHX-F 4G1.54G1.51.5 mm²10.85816065
S07HXHX-F 4G2.54G2.52.5 mm²12.59622575
S07HXHX-F 4G44G44.0 mm²14.215431085
S07HXHX-F 4G64G66.0 mm²15.823041595
S07HXHX-F 4G104G1010 mm²19.8384680119
S07HXHX-F 4G164G1616 mm²22.6614960136
S07HXHX-F 5G1.55G1.51.5 mm²11.87219571
S07HXHX-F 5G2.55G2.52.5 mm²13.812027583
S07HXHX-F 5G65G66.0 mm²17.6288510106
S07HXHX-F 7G1.57G1.51.5 mm²14.010126584
S07HXHX-F 12G1.512G1.51.5 mm²18.0173420108
  • 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 EN 50525-3-21 / H07ZZ-F.

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.

  1. ConductorClass 5 stranding
  2. Spark test100 % in-line
  3. Lay-upCores, earth, fillers
  4. SheathingInner, braid / screen, outer
  5. Electrical testsAC voltage, resistance
  6. DimensionsOD, wall thickness
  7. Inspection documents & dispatchDrum & dispatch
Testing & inspectionTest value / referenceFrequency
Routine tests
2.5 kV AC dielectric withstand test5 minutes without insulation breakdown per EN 50525-3-21100 % of drums
Sample tests
IEC 60332-3-24 Cat. C bunched flame & IEC 60754-2 halogen testZero halogen acid gas and low smoke opacity (≥60 % per IEC 61034-2)Type qualification
EN 60811-507 hot-set cross-linking & oil immersionVerifies full thermoset vulcanisation of EI8 and EM8 elastomersType qualification

Inspection certificate

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

Product approvals

EN 50525-3-21 (H07ZZ-F)IEC 60332-3-24 Cat. CIEC 60754-1/2 & IEC 61034-2EN 50363-5 EI8 & EN 50363-6 EM8

Company certificates

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

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX S07HXHX-F / H07ZZ-F 5G2.5 450/750V EN 50525-3-21 IEC 60332-3-24 LSZH CE [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

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 does S07HXHX relate to the harmonised European designation H07ZZ-F?
S07HXHX (S07HXHX-F) is built on the EN 50525-3-21 (H07ZZ-F) architecture using EI8 cross-linked halogen-free elastomer insulation and an EM8 cross-linked halogen-free elastomer sheath, extended to cover multi-core control configurations and IEC 60332-3-24 bunched flame retardancy.
Why is cross-linked elastomer (HX) superior to thermoplastic LSZH on flexible cables?
Thermoplastic LSZH compounds are stiff, prone to cold cracking and soften above 70 °C. Cross-linked EI8/EM8 elastomer compounds (HX) behave like true vulcanised rubber—staying supple down to -40 °C, operating continuously at +90 °C, and withstanding +250 °C short-circuits without melting.
Can S07HXHX be used outdoors and in wet environments?
Yes. The heavy-duty EM8 cross-linked elastomer outer sheath is ozone-resistant (EN 60811-403), UV-stabilised, oil-resistant and suitable for damp industrial locations and outdoor temporary power distribution.
When should screened S07HXCHX-F be selected instead of S07HXHX?
Select S07HXCHX-F when feeding variable-frequency drive (VFD) motors, servo actuators or analogue/digital control lines where a ≥85 % tinned copper braid screen is required to suppress electromagnetic interference.

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S07HXHX Halogen-Free Cross-Linked Elastomer Flexible Power &

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