In industrial and outdoor environments, electrical cables must endure mechanical stress, extreme temperatures, moisture, and exposure to chemicals. The H07RN-F cable is a high-performance, heavy-duty rubber cable designed to withstand these harsh conditions. It offers exceptional durability, flexibility, and electrical
Contractors and engineers choose H07RN-F cable for its mechanical strength and resistance to oils and weather, using it in construction, manufacturing, mining, marine applications, and event power distribution. Unlike PVC-insulated cables that can deteriorate under harsh conditions, H07RN-F maintains its integrity and flexibility, ensuring long-term performance and safety
This blog explores the technical properties, key benefits, and applications of H07RN-F cables, helping you understand why they are the preferred choice for demanding electrical installations
What is H07RN-F Cable?
H07RN-F Cable is a flexible, heavy-duty rubber cable designed for mechanical stress, harsh environmental conditions, and continuous movement. Additionally, its robust rubber insulation and sheath make it highly resistant to moisture, oils, abrasion, and extreme temperatures, thereby ensuring reliable power transmission in even the most challenging applications. <p>
Unlike standard PVC cables, which may become stiff, brittle, or damaged in industrial and outdoor conditions, H07RN-F cables remain flexible, durable, and safe for frequent handling. This makes them a preferred choice for power distribution, mobile equipment, and environments where mechanical stress is a concern.
Key Characteristics:
- Voltage Rating: 450/750V, suitable for medium-voltage power applications. This voltage rating ensures the cable can handle a variety of industrial, marine, and outdoor applications without risk of electrical failure.
- Highly Flexible Design: Ideal for installations requiring constant movement and handling, such as construction sites or mobile machinery. This flexibility ensures ease of use and minimizes the risk of internal breakage due to bending.
- Temperature Resistance: Performs in extreme temperatures ranging from -25°C to +60°C, and some variants are rated up to +85°C. This wide temperature range ensures that the cable can function in both freezing and very hot environments, making it suitable for a variety of industries and conditions.
- Water and Weatherproof: Resistant to moisture, rain, and extreme outdoor conditions. The rubber construction also offers protection from UV rays, ensuring that the cable maintains its flexibility and integrity even when exposed to prolonged sunlight. This feature makes it highly suitable for outdoor applications, including marine and offshore use.
Thanks to their robust qualities, professionals use H07RN-F cables across construction sites, mining operations, industrial power tools, outdoor events, and agricultural machinery.
Technical Breakdown: Understanding the Composition
H07RN-F cables feature multiple layers of high-performance materials that provide strength, flexibility, and durability.
Conductor – High-Quality Copper for Optimal Conductivity
The cable features Class 5 flexible stranded copper conductors, offering:
- Superior electrical conductivity for stable power transmission.
- Flexibility for frequent movement without causing internal breakage.
- Corrosion resistance, ensuring long-term performance in humid or corrosive environments.
Insulation – EPDM (Ethylene Propylene Diene Rubber) for Electrical Protection
The inner insulation layer is made of EPR rubber, which provides:
- High dielectic strength, preventing electrical leakage and short circuits.
- Thermal resistance up to 90°C, ensuring safe operation under high electrical loads.
- Resistance to oils, chemicals, and UV exposure, extending cable lifespan.
Outer Sheath – CPE (Chlorinated Polyethylene) for Enhanced Durability
The outer sheath is made of Chlorinated Polyethylene, which:
- Provides exceptional mechanical protection, resisting cuts, abrasions, and impact damage.
- Enhances resistance to oils, hydrocarbons, and industrial chemicals.
- Offers UV and weather resistance, making it suitable for outdoor and marine environments.
- Remains flexible even in low temperatures, unlike PVC cables that become brittle.
Flame Retardancy and Safety Features
H07RN-F cables are flame retardant and self-extinguishing, meeting EN 50525-2-21 safety standards. They are designed to minimise fire hazards, making them safe for industrial and public spaces. Their flame-retardant properties prevent the spread of fire, reducing the risk of extensive damage in case of electrical faults.
Additionally, the cable’s high insulation resistance reduces the likelihood of short circuits and electrical faults, further enhancing safety. The materials used are also resistant to thermal stress, ensuring that the cable does not degrade under high operating temperatures. This makes H07RN-F a dependable choice for high-risk environments where fire prevention and electrical safety are critical.
Mechanical Strength and Flexibility
Unlike traditional cables that may crack or degrade under stress, H07RN-F cables are built to:
- Withstand repeated bending and flexing, making them ideal for portable and moving equipment.
- Handle mechanical shock and vibration, ensuring stable power transmission in rugged environments.
- Remain pliable under cold conditions, making them an excellent choice for outdoor winter applications.
Applications of H07RN-F Cables
H07RN-F cables are widely used in industrial, commercial, and outdoor settings due to their robust properties. Some key applications include:
- Construction & Industrial Use: Supplies power to heavy machinery, tools, lighting systems, and temporary site installations. H07RN-F cables are particularly suited for dynamic, high-load conditions often found on construction sites, thanks to their Class 5 flexible copper conductors. Their excellent resistance to oils, abrasions, and weather ensures long-term reliability even in harsh and physically demanding industrial environments where traditional cables might fail.
- Marine & Offshore: Delivers reliable power in marine environments where moisture and corrosive elements can damage standard cables. The heavy-duty rubber sheath prevents degradation from saltwater exposure and UV rays, making these cables ideal for dockside applications, onboard systems, and shipyards.
- Events & Entertainment: Provides power distribution for concerts, festivals, theatres, and outdoor events. The cable’s high flexibility allows for quick deployment and retraction, while the tough outer sheath protects it from frequent handling, foot traffic, and accidental impacts. Its flame-retardant properties and compliance with EN 50525-2-21 also make it a safer option in densely populated or temporary venues where public safety is a top concern.
- Mining & Agriculture: Powers pumps, conveyor belts, irrigation systems, and mobile machinery used in challenging environments. The rugged construction of H07RN-F makes it capable of withstanding mechanical strain, moisture, mud, and rough terrain commonly encountered in mining tunnels or open agricultural fields.
- Renewable Energy & Infrastructure: Used in wind farms, solar installations, and railway power systems where durability and safety are paramount. H07RN-F cables maintain consistent electrical performance despite extreme temperatures, mechanical movement, or UV exposure. Their reliable insulation and sheath materials make them a dependable choice for long-term use in infrastructure projects aimed at sustainability and energy transition.
Examples of H07RN-F Cables We Stock
At GoSparky, we offer a selection of H07RN-F cables designed to meet the demands of various industries and applications. Regardless, whether you need a standard flexible cable for general use or a heavy-duty variant for extreme conditions, we have the options to suit your requirements. Below are some examples of what we offer.
If you’re looking for a high-strength cable to power your outdoor lighting look no further than the Securi-Flex SFX/H07RN-F-2C-1.5-RBR-BLK-1 | Power Cable Flexible 1.5mm 2 Core H07RN-F Rubber Black (1m).
This is perfect for common applications such as lighting or powering outdoor domestic items like outdoor sockets. Due to the extreme versatility of H07RN-F cable you can be assured of great performance in a wide range of applications.
A further great example of what we offer is the Securi-Flex SFX/H07RN-F-3C-4.0-RBR-BLK-1 | Power Cable Flexible 4.0mm 3 Core H07RN-F Rubber Black (1m).
Perfect for powering mid-sized equipment and three-phase tools, with resilience in semi-industrial environments and outdoor setups. The cables rubber insulation ensures reliable performance.
Another popular choice is the Securi-Flex SFX/H07RN-F-4C-4.0-RBR-BLK-1 | Power Cable Flexible 4.0mm 4 Core H07RN-F Rubber Black (1m).
Designed for three-phase applications, this robust cable withstands tough mechanical stress and outdoor conditions. Its heavy duty rubber sheath resists oil, moisture, and abrasion.
Additionally, we also offer the Securi-Flex SFX/H07RN-F-5C-6.0-RBR-BLK-1 | Power Cable Flexible 6.0mm 5 Core H07RN-F Rubber Black (1m).
Ideal for powering larger installations and distribution systems. This high-capacity cable delivers excellent durability and electrical safety across demanding environments.
Conclusion
H07RN-F cables offer a dependable and high-performance solution for safe and consistent power delivery in demanding conditions. Whether you’re powering tools and lighting on active construction sites or tackling the corrosive challenges of offshore environments, these cables deliver durability and resilience by design.
Their flexible rubber construction allows them to be bent, repositioned, and coiled without internal damage – an essential feature for mobile and temporary setups. Meanwhile, the high-quality EPDM insulation and CPE outer sheath provide robust protection against oils, water, abrasion, UV exposure, and mechanical stress. These qualities not only extend the cable’s operational life but also significantly reduce maintenance and replacement costs over time.
H07RN-F stands out for its versatility, powering industrial gear, public events, farming equipment, and renewable energy systems. Additionally, compliant with EN 50525-2-21, the cable offers flame retardancy and safety for high-risk and public facing environments.
With a carefully selected range of core sizes and configurations available, our stock of Securiflex H07RN-F cable is ready to meet the requirements of projects both large and small. Whether you’re powering portable site equipment or installing long-term infrastructure, these cables provide a dependable connection built to last.