H07RN8-F Submersible Pump Flexible Rubber Cable EN 50525

H07RN8-F submersible pump flexible rubber cable is a highly flexible, weather and oil-resistant rubber cable used as power and control cable for submersible pumps, agricultural and industrial plants. Taitong Cable, a professional cable factory based in China, supplies this waterproof rubber cable. CE certified, submersible pump cable complies with EN 50525-2-21 (VDE 0285-525-2-21), rated at 450/750V (U₀/U). This round cable features Class 5 (EN/IEC 60228) finely stranded copper conductors. Cross-linked elastomer insulation and waterproof, oil-resistant rubber sheath deliver outstanding water resistance, flexibility and mechanical durability. Designed as borehole submersible pump cable, it serves wholesalers, contractors and EPC purchasers across Europe, Africa and the Middle East. Filler and single/double layer outer sheath are optional.

Applications 

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This H07RN8-F submersible pump flexible rubber cable is used for submersible pumps and wet environments, suitable for fresh water immersion up to 10m and maximum water temperature of 40°C, widely applied for borehole submersible pump power supply in agricultural irrigation, domestic water supply and industrial water pumping projects. 

H07RN8‑F Suitable Installation Applications

Deep borehole submersible pumps for agricultural irrigation

Domestic water supply submersible pumps

Industrial water pumping & water treatment submerged motors

Permanent fully submerged equipment in fresh water wells

Submerged underwater motors in freshwater tanks and reservoirs

Aquaculture underwater pumping equipment

Water level monitoring devices with permanent fresh water submersion

Limitations

Not suitable for seawater, salt water, crude oil or chemical polluted water

Not for underground coal mine or gas hazardous environment

Not for high-temperature water exceeding 40°C

Reference standards 

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Construction EN 50525-2-21, VDE 0285-2-21, IEC 60245-4

General Requirements EN 50525-1, VDE 0285-525-1, IEC 60245-1

Guide to Use EN 50565-1/2, VDE 0298-565-1

Electrical Tests EN 50395, IEC 60245-2

Non-electrical Tests EN 50396, IEC 60245-2

Conductor Resistance IEC 60228, VDE 0295

Flame Retardant IEC 60332-1-2, VDE 0482-332-1-2

Oil Resistant EN 60811-404, VDE 0473-811-404

Water Resistance (AD8) EN 50525-2-21, NF C15-100, EN 60529

Construction 

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Conductor: Class 5 Flexible stranded copper (EN 60228) & (tinned conductor on request)

Separator: A suitable tape may be applied over the conductor 

Filler: A centre filler may be used (2 to 5 core)

Insulation: Rubber Compound Type EI4, EPR (EN 50363-1)

Inner Sheath: EM2 or EM3 type cross-linked elastomeric compound (EN 50363-2-1)

(If outer sheath thickness is greater than 2,4 mm)

Outer Sheath: EM2 type cross-linked elastomeric compound (EN 50363-2-1)

Sheath Colour: Black  (other colors available on request)

Electric Parameters 

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Voltage Rating: 450/750 Volts

AC Test Voltage: 2,5 kV

Minimum Bending RadiusFixed: 4 x overall diameter

Flexing: 6 x overall diameter

Temperature Limits

Fixed: -40°C to +60°C

Flexed: -15°C to +60°C

AD8 Submersion

Sizes scope:

Single core: 1,5mm² to 630mm²

2 and 5 core: 1,0mm² to 25mm²

3 and 4 core:1,0mm² to 300mm²

The sizes of multicore H07RN8-F cable shall be:

- 6, 7, 1 2, 1 8, 24 and 36 core – 1 ,5 mm² and 2,5 mm ² ;

- 6, 7, 12 and 18 core – 4 mm²

Core Colours 

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1-core:Black

2-core:Brown,Blue

3-core:Brown,Blue,Green-yellow (earth)

4-core:Brown,Blue,Grey,Green-yellow (earth)

5-core:Brown,Blue,Grey,Black,Green-yellow (earth)

6-core and above: Black insulation marked with sequential white numbers. Green/yellow core for protective earth if required. 

Dimensions, refer to downloadable datasheet.

Taitong Cable: H07RN8-F Rubber Cable Factory Advantages 

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Taitong Cable, founded in 2002, operates 5 dedicated factories specialising in power and rubber cables. Boasting decades of manufacturing expertise and a professional R&D, QC and production team, the factory masters advanced rubber compounding and cable extrusion technology for high-performance rubber cables. It has accumulated extensive production and bulk supply experience for borehole submersible pump projects with H07RN8-F submersible pump flexible rubber cable (1 to 5 core) 450/750V . Full qualifications and CE certification are available. Products comply strictly with EN 50525-2-21 and its corresponding VDE standard to meet diverse U₀/U electrical requirements from global water pump cable clients.

The factory serves wholesalers, contractors and EPC project purchasers across Europe (UE), Africa and the Middle East, delivering competitive factory-direct pricing, complete official test reports, dependable pre-sales and after-sales technical support, plus stable bulk delivery for large bulk orders. For all U₀/U cable requirements, consistent quality, flexible specification customisation and thoughtful after-sales service create long-term stable value for worldwide water pump engineering projects. .

The Main Distinctions Between 1 to 5 core H07RN8-F & Multi-core H07RN8-F 

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The primary difference between H07RN8-F (1 to 5 core) and H07RN8-F (multi-core) cables lies in the number of conductors (cores) inside the sheath, how they are colored or labeled, and their typical application. Both versions share the exact same heavy-duty, submersible rubber protection rated for fresh water immersion up to 10 meters deep.

Key Structural & Operational Differences 

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Under harmonized European rules (HD 308 S2), cables with 1 to 5 cores use distinctive colored insulation blocks so installers can instantly tell live, neutral, and earth wires apart. Once a cable has 6 or more cores, color-coding becomes impractical, so the industry switches to sequential numbering.

Application Focus 

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The 1 to 5 core variants are generally thicker "power" cables designed to carry high-amperage current to drive mechanical motors. The multi-core variants function primarily as "control or signaling" cables, carrying lower-current commands to float switches, sensors, or automated industrial water systems.