In modern industry, cables are more than just conductors of electricity—they are lifelines that ensure safety, reliability, and performance in some of the harshest environments on earth. Among the many cable types used globally, H07RN8-F 450/750V harmonized rubber cables stand out for their versatility and durability, particularly in submersible, mining, construction, and heavy industrial settings.

These cables are designed to withstand demanding conditions: water immersion up to 10 metres, mechanical stress, oil exposure, and fluctuating temperatures. Their widespread adoption across Europe, Africa, and Asia has made them a trusted standard for industries requiring robust and compliant solutions. In South Africa, where mining and heavy industry are critical to the economy, H07RN8-F cables are gaining prominence as operators modernise their infrastructure to meet safety, regulatory, and performance requirements.

What Are H07RN8-F 450/750V Harmonized Rubber Cables?

H07RN8-F is a harmonized cable designation under European and international standards (DIN VDE and HD 22 series). The “H” indicates harmonisation, “07” refers to a voltage rating of 450/750V, “RN” signifies a rubber-sheathed cable with enhanced oil and abrasion resistance, and “8” specifies suitability for submersion in water.

In simple terms, H07RN8-F is a flexible rubber-insulated and sheathed cable capable of operating under tough industrial conditions, including submersible pumps, construction equipment, and mobile machinery.

Standards Compliance

These cables comply with:

• DIN VDE 0282 Part 1 and Part 16

• HD 22.1

• HD 22.16 S1

This compliance ensures that the cables meet stringent requirements for safety, fire resistance, insulation performance, and mechanical durability.

Benefits of H07RN8-F Rubber Cables

1. Water Resistance – Safe for continuous immersion up to 10 metres, ideal for pumps and underwater equipment.

2. Flexibility – Class 5 copper and rubber sheathing ensure flexibility, even in confined installations.

3. Durability – High resistance to abrasion, cuts, oils, and weather conditions.

4. Electrical Safety – Excellent insulation integrity, reducing risks of leakage and electrical faults.

5. Versatility – Usable in dry, wet, and submerged conditions.

6. Compliance – Meets harmonised European and international standards, ensuring global acceptance.

Applications of H07RN8-F Cables

H07RN8-F cables are widely applied across multiple industries:

• Submersible Pumps – Especially for dewatering in mines, tunnels, and construction sites.

• Mining Equipment – Used in South Africa’s deep-level gold and platinum mines, where water ingress is a constant challenge.

• Heavy Industry – Portable tools, machinery, and power distribution in harsh industrial environments.

• Construction Sites – For mobile power tools and temporary site installations.

• Renewable Energy – In hydroelectric plants and water-based renewable projects.

Case Study: Dewatering in South African Platinum Mines

South Africa’s platinum mines often extend several kilometres underground, where water accumulation poses serious operational and safety risks. In 2024, several mines in the Bushveld Igneous Complex invested in H07RN8-F cables for submersible pump systems.

• Challenge: Conventional cables degraded quickly due to constant immersion, abrasion against rock walls, and exposure to mining fluids.

• Solution: Deployment of H07RN8-F 5G16 mm² cables for powering submersible pumps at depths of 6–8 metres.

• Outcome: Increased pump uptime, reduced cable replacement costs, and improved compliance with South African Mine Health and Safety Act requirements.

This case highlights how the durability and water resistance of H07RN8-F cables directly translate to operational efficiency and cost savings in mining.

H07RN8-F 450/750V harmonized rubber cables are among the most versatile and reliable solutions for industries requiring robust, water-resistant, and flexible power transmission. Their specialized construction, compliance with international standards, and proven performance in mining and industrial environments make them invaluable for modern operations.

In South Africa, where mining remains central to economic growth and safety is paramount, the adoption of durable cables like H07RN8-F ensures compliance, reliability, and reduced operational risk. Whether powering submersible pumps, portable machinery, or heavy-duty industrial tools, these cables provide the strength and resilience demanded by today’s toughest applications.