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Product

Heavy-duty rubber cablesEN 50525-2-21U0/U 450/750 VAD8 submersible

H07RN8-F Submersible Pump Rubber CableHarmonised AD8 waterproof 450/750 V EPR/PCP rubber cable to EN 50525-2-21

Water-resistant flexible rubber cable with Class 5 copper conductors, EI4 EPR insulation and a low-water-absorption EM2 polychloroprene sheath — engineered for continuous AD8 submersion on drainage, sewage, dewatering and irrigation pumps.

Water-resistant

Outdoor & humid

Oil-resistant

Flame-retardant

Cores × cross-section

Order designation: H07RN8-F 4G6
Outer Ø min: 15.7 mm
Outer Ø max: 20.0 mm
Weight ≈: 540 kg/km
Min. bend R: 120 mm

Check against my drum All sizes (77)

Request a quote Datasheet WhatsApp

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

Rated voltage: 450/750 V
Water depth: 10 m · AD8
Water temp.: +40 °C max.
Bending radius: 4–6 × OD
Tensile load: 15 N/mm²
Sizes: 77

Typical values for this cable type, based on EN 50525-2-21 — confirmed in the datasheet and quotation for your order.

Application fit

Is H07RN8-F right for your machine?

H07RN8-F is purpose-built for submersible pumps, float switches and wet-well mixers. Never suspend the weight of a submersible pump from the electrical cable — support the pump with a dedicated lifting chain or stainless wire rope.

Immersion & wet locations

Suitable

Continuous AD8 submersion in fresh, waste and process water up to 10 m depth and +40 °C water temperature.

Trailing & towing

Suitable

Portable dewatering pumps, wet-site construction equipment, agricultural slurry pumps and industrial washdown leads.

Fixed installation

Suitable

Fixed riser pipes, wet-well brackets and up to 0.6/1 kV inside mechanically protected conduit.

Free-hanging vertical run

With conditions

Vertical riser drops alongside a pump lifting chain within 15 N/mm² conductor pull; cable must never carry the pump weight.

Motorised monospiral reel

Not suitable

Not designed for high-speed motorized crane reeling or underwater power transmission across waterways.

Use NSHTÖU reeling cable

Typical machinesSubmersible drainage & sewage pumpsMunicipal wastewater & treatment plantsMine & tunnel dewatering sumpsConstruction site & trench dewateringAgricultural irrigation & slurry pumpsFloating aerators, mixers & fountains

Construction

Layer by layer

Shown: H07RN8-F 4G6 — four Class 5 bare copper cores with EI4 EPR insulation, separator tape and a special water-resistant EM2 polychloroprene outer sheath.

Schematic, not to scale — generated from the layer data

#	Layer	Material & reference
1	Conductor	Bare copper, fine-stranded Class 5 (tinned on request)IEC 60228 / EN 60228 Class 5
2	Core insulation	EPR thermosetting rubber compound type EI4EN 50363-1 · Core identification DIN VDE 0293-308 / HD 308 S2
3	Assembly separator	Non-hygroscopic separating tape over laid-up core assemblyMaintains circular profile and stripability
4	Outer sheath	Water-resistant polychloroprene (PCP) rubber compound type EM2, blackEN 50363-2-1 · AD8 submersible · Oil-resistant EN 60811-404 · Flame-retardant IEC 60332-1-2

H07RN8-F ..G..

3 to 5 cores with green-yellow protective conductor

H07RN8-F ..X..

1 or 2 cores without protective conductor

≥ 6 cores

Black cores with white numbers + green-yellow earth

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on EN 50525-2-21. Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated voltage U0/U: 450/750 V
Protected fixed voltage: 0.6/1 kV (protected fixed installation & lifting motor rotors)
AC test voltage: 2.5 kV

Thermal

Max. water temperature: +40 °C
Temperature, flexing: −25 to +60 °C
Temperature, fixed: −40 to +60 °C
Max. conductor temperature: +60 °C
Short-circuit temperature: +200 °C

Mechanical

Min. bending radius, moving: 6 × OD
Min. bending radius, fixed: 4 × OD
Max. tensile load: 15 N/mm² permanent conductor tensile load
Submersion depth: Up to 10 m water depth (EN 50525-2-21 standard AD8)

Resistance

Water resistance: AD8 continuous submersion in fresh, waste and process water
Oil resistance: EN 60811-404
Flame retardance: IEC 60332-1-2 · CPR class Eca (EN 50575)
Ozone & weather: Ozone, UV and weather resistant

Reference standards

Cable type: EN 50525-2-21 / DIN VDE 0285-525-2-21 (HD 22.4 S3 / CEI 20-19/16)
Conductor: IEC 60228 Class 5
Compounds: EI4 EPR insulation (EN 50363-1) · special water-resistant EM2 PCP sheath (EN 50363-2-1)
Core identification: DIN VDE 0293-308 / HD 308 S2

Identification

Sheath colour: Black
Cores 1–5: 1c black · 2c blue/brown · 3–5c colour-coded (G = with green-yellow)
Cores ≥ 6: Black cores with white numbers + green-yellow earth
Customs tariff (HS): 8544.49

Sizes

77 standard submersible sizes

Typical EN 50525-2-21 outer diameter limits and weights for submersible pump power and float-switch control cables.

Dimensions & weights
Order designation	Cores × mm²	AWG ≈	Outer Ø min mm	Outer Ø max mm	Copper kg/km	Weight ≈ kg/km	Min. bend R mm	Max. pull N
4-core (4G)
H07RN8-F 4G1	4 × 1	18	9.2	11.9	38	150	71	60
H07RN8-F 4G1.5	4 × 1.5	16	10.2	13.1	58	200	79	90
H07RN8-F 4G2.5	4 × 2.5	14	12.1	15.5	96	290	93	150
H07RN8-F 4G4	4 × 4	12	14.0	17.9	154	395	107	240
H07RN8-F 4G6	4 × 6	10	15.7	20.0	230	540	120	360
H07RN8-F 4G10	4 × 10	8	20.9	26.5	384	950	159	600
H07RN8-F 4G16	4 × 16	6	23.8	30.1	614	1,260	181	960
H07RN8-F 4G25	4 × 25	4	28.9	36.6	960	1,860	220	1,500
H07RN8-F 4G35	4 × 35	2	32.5	41.1	1,344	2,380	247	2,100
H07RN8-F 4G50	4 × 50	1	37.7	47.5	1,920	3,190	285	3,000
H07RN8-F 4G70	4 × 70	2/0	42.7	54.0	2,688	4,260	324	4,200
H07RN8-F 4G95	4 × 95	3/0	48.4	61.0	3,648	5,600	366	5,700
H07RN8-F 4G120	4 × 120	4/0	53.0	66.0	4,608	6,830	396	7,200
H07RN8-F 4G150	4 × 150	300 kcmil	58.0	73.0	5,760	8,320	438	9,000
H07RN8-F 4G185	4 × 185	350 kcmil	64.0	80.0	7,104	9,800	480	11,100
H07RN8-F 4G240	4 × 240	500 kcmil	72.0	91.0	9,216	12,100	546	14,400
H07RN8-F 4G300	4 × 300	600 kcmil	80.0	101.0	11,520	15,200	606	18,000

Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
Ensure the pump cable gland sealing range spans the full EN 50525-2-21 min–max outer diameter for the chosen size.

Electrical & current ratings
Cross-section mm²	AWG ≈	Max. DC resistance 20 °C, Ω/km	1-core trefoil 30 °C, A	2-core 30 °C, A	3-core 30 °C, A	4G / 5G 30 °C, A	Used in
1	18	19.5	—	16	16	13.5	2× 3G 4G 5G
1.5	16	13.3	17.5	19.5	19.5	17.5	1× 2× 3G 4G 5G 6G–36G
2.5	14	7.98	20	25	25	20	1× 2× 3G 4G 5G 6G 7G 12G
4	12	4.95	30	34	35	30	1× 2× 3G 4G 5G
6	10	3.3	38	43	44	37	1× 2× 3G 4G 5G
10	8	1.91	53	60	62	52	1× 2× 3G 4G 5G
16	6	1.21	71	79	82	69	1× 2× 3G 4G 5G
25	4	0.78	94	105	109	92	1× 2× 3G 4G 5G
35	2	0.554	117	—	135	114	1× 3G 4G
50	1	0.386	148	—	169	143	1× 3G 4G
70	2/0	0.272	185	—	211	178	1× 3G 4G
95	3/0	0.206	222	—	250	210	1× 3G 4G
120	4/0	0.161	260	—	292	246	1× 3G 4G
150	300 kcmil	0.129	300	—	335	282	1× 3G 4G
185	350 kcmil	0.106	341	—	378	319	1× 3G 4G
240	500 kcmil	0.08	407	—	430	377	1× 3G 4G
300	600 kcmil	0.064	468	—	497	435	1× 3G 4G
400	750 kcmil	0.049	553	—	—	—	1×
500	1000 kcmil	0.038	634	—	—	—	1×

Current ratings are given for 30 °C in air; where a pump riser cable runs partly in air or conduit above water level, size the cross-section for the unsubmerged thermal bottleneck.

Reel check

Will it fit your machine?

A first screen using datasheet values. Engineering confirms drum geometry, acceleration and tension with your quotation.

Cable sizeDrum core diameter (mm)

Cable length on drum (m)

Drum core 300 mm ≥ 240 mmBending radius OK (6 × OD 20.0 mm)

Minimum bending radius: 120 mm
Min. drum core diameter: ≈ 240 mm
Cable weight on drum: 16.2 kg
Copper content: 6.9 kg

Indicative only: based on the datasheet outer diameter and 6 × OD bending radius. Current derating for wound layers per DIN VDE 0298-4 is assessed separately.

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
AC voltage test	2.5 kV, 5 min	Every length
Conductor resistance	IEC 60228 Class 5	Every length
Sample tests
Water immersion / AD8 sheath test	EN 50525-2-21 / EN 50363-2-1	Per compound batch
Oil resistance of sheath	EN 60811-404	Per compound batch
Flame propagation	IEC 60332-1-2 · CPR Eca (EN 50575)	Per batch

Inspection certificate

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

Product approvals

HAR (EN 50525-2-21)CE · CPR Eca (EN 50575) · RoHS

Company certificates

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

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX <HAR> H07RN8-F 4G6 450/750 V EN 50525-2-21 AD8 · CE · [year] · [metre mark]

Delivery form: Export wooden drums or cut-to-length pump leads
Packaging: Heat-treated timber drums with waterproof end caps

Technical documents

Downloads

PDFH07RN8-F Submersible Pump Rubber Cable – technical datasheet77 sizes · construction, technical data, approvals XLSXH07RN8-F spec data (Excel)All 77 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.

What does the '8' in H07RN8-F signify?

Under EN 50525-2-21 (formerly HD 22.4 S3 and CEI 20-19/16), the '8' after RN designates a special water-resistant polychloroprene outer sheath compounded and tested for continuous AD8 underwater submersion on submersible pumps, distinguishing it from standard general-purpose H07RN-F.

What is the maximum water depth and temperature for H07RN8-F?

Standard EN 50525-2-21 specifies H07RN8-F for continuous submersion in fresh, waste or process water down to 10 m depth at a maximum water temperature of +40 °C (with a +60 °C maximum conductor temperature). For deep-well boreholes exceeding 10 m, consult our engineers with the hydrostatic head and water chemistry.

Can a submersible pump be lifted or suspended by its H07RN8-F cable?

No. The permanent tensile load on the copper conductors must never exceed 15 N/mm² of total conductor cross-section. Always suspend and lift the pump using a dedicated stainless steel chain or wire rope, and secure the H07RN8-F cable along the riser pipe or lifting line with strain-relief clamps every 2 to 3 metres.

Can H07RN8-F be used for underwater power transmission across rivers or shipping channels?

No. EN 50525-2-21 explicitly excludes H07RN8-F from underwater power transmission lines in waterways or unshielded seabed/riverbed runs where anchors, dredging or rock abrasion could cause mechanical damage. It is designed specifically as a flexible pump and equipment supply lead.

How do I size the waterproof cable gland at the submersible pump entry?

Submersible pump entries rely on elastomer compression seals that must remain watertight under hydrostatic pressure. Always verify that your gland's clamping range covers both the minimum and maximum outer diameter listed for your chosen H07RN8-F size in the EN 50525-2-21 dimension table.

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Your selection and application details are copied into the enquiry form below.

01Selected sizes

Use + Add next to a size or configuration.

02Reel & motion

Add your operating conditions here to include them in your enquiry.

Reel typeDrum core diameter (mm)Cable length on drum (m)Travel speed (m/min)Max. accelerationCycles per hourLength and quantityAmbient temperatureExposure (outdoor, water, oil, abrasion)Destination countryEquipment and operating conditions

03Message for our engineers

H07RN8-F 450/750 V Submersible Pump Rubber Cable

Selected sizes:


Reel & motion:
- Reel type: 
- Drum core diameter (mm): 
- Cable length on drum (m): 
- Travel speed (m/min): 
- Max. acceleration: 
- Cycles per hour: 
- Length and quantity: 
- Ambient temperature: 
- Exposure (outdoor, water, oil, abrasion): 
- Destination country: 
- Equipment and operating conditions:

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Datasheet Request a quote

H07RN8-F Submersible Pump Rubber CableHarmonised AD8 waterproof 450/750 V EPR/PCP rubber cable to EN 50525-2-21

Immersion & wet locations

Trailing & towing

Fixed installation

Free-hanging vertical run

Motorised monospiral reel

H07RN8-F ..G..

H07RN8-F ..X..

≥ 6 cores

Electrical

Thermal

Mechanical

Resistance

Reference standards

Identification

Check results

Inspection certificate

Product approvals

Company certificates

01Selected sizes

02Reel & motion

03Message for our engineers

H07RN-F

NSSHÖU

NSHTÖU

PNCT / 2PNCT / 3PNCT