450/750V Cable
450/750V cables are widely used in low-voltage power distribution, lighting systems, industrial equipment wiring, and building installations. Designed according to international standards such as IEC 60227 and EN 50525, ZMS cables offer superior mechanical strength, insulation reliability, and flame retardancy. We offer a comprehensive range of 450/750V low-voltage cable models, including H07V-K, NYM, NYA, and H07RN-F.
Different 450/750V Cable Models
Low-voltage cables rated at 300/500V are widely used in control systems, building wiring, industrial automation, and instrumentation. These cables, which comply with IEC and VDE standards, are renowned for their reliability, flexibility, and suitability for both fixed and flexible installations. Below is a detailed list of common 300/500V cable types, including their construction, characteristics, applications, and technical data.
H07V-K Cable
H07V-K Cable is a flexible single-core PVC-insulated wire designed for internal wiring of electrical panels, conduits, and protected installations in residential, commercial, and industrial environments.
- Conductor: Fine-stranded bare copper (Class 5)
- Insulation: PVC type TI1, compliant with EN 50363-3
- Core Color: Black, blue, brown, green/yellow, red, etc.
- Outer Sheath: None (single-core insulated wire)
- Internal wiring of distribution boards and switch cabinets
- Fixed protected installation in conduits and ducts
- Wiring for lighting systems and electrical equipment
- Suitable for use in residential, commercial, and industrial buildings
- Highly flexible for easy routing and installation
- Flame retardant according to IEC 60332-1-2
- Suitable for dry and humid indoor environments
- Compliant with EN 50525-2-31 and IEC 60227-3
- Available in multiple cross-sections and color options
| Operating Temperature | Installation Temperature | Minimum Bending Radius | Flame Retardancy | Standard | Cross Section Range |
| -15°C to +70°C | ≥ +5°C | ≥ 4 x outer diameter | IEC 60332-1-2 | EN 50525-2-31, IEC 60227-3 | 0.5 mm² to 35 mm² |
H07V-U Cable
H07V-U Cable is a single-core solid copper conductor PVC insulated cable suitable for fixed installation of indoor 450/750V low-voltage power distribution and lighting lines.
- Conductor: Solid class 1 bare copper conductor (complies with EN 60228)
- Insulation: PVC insulation, type TI1 according to EN 50363-3
- Sheath: No outer sheath (single-core wire)
- Color: Available in various standard colors (black, blue, brown, green/yellow, grey, red, white, etc.)
- Internal wiring of electrical distribution boards
- Installation in conduits, trunking, and fixed protected routes
- Residential, commercial, and industrial building wiring
- Suitable for lighting circuits and general power supply
- Solid conductor ensures shape stability for fixed wiring
- High dielectric strength and electrical safety
- Flame-retardant PVC insulation (IEC 60332-1)
- Easy stripping and installation
- Available in a wide range of colors for phase identification
- Operating voltage: up to 450/750V
| Rated Voltage | Operating Temp. | Max. Conductor Temp. | Min. Bending Radius | Flame Retardant | Standard |
| 450/750V | -5°C to +70°C (fixed installation) | +70°C | 4 × overall diameter | IEC 60332-1-2 | EN 50525-2-31, IEC 60227-3 |
H07RN-F Cable is a flexible rubber-insulated power cable designed for heavy-duty industrial use, providing excellent mechanical strength, weather resistance, and oil resistance.
- Conductor: Class 5 flexible stranded copper (IEC 60228)
- Insulation: EPR (Ethylene Propylene Rubber), heat-resistant up to 90°C
- Sheath: Heavy-duty rubber sheath type PCP (Polychloroprene) or equivalent
- Color: Core colors according to HD 308 S2 (e.g., brown, blue, green/yellow)
- Voltage Rating: 450/750V
- Standards: IEC 60245-4 / EN 50525-2-21 / VDE 0282-4
- Industrial machinery and equipment power supply
- Construction site tools and lighting systems
- Stage and event power distribution
- Agricultural and outdoor installations
- Temporary power supply for fairs and exhibitions
- Suitable for dry, damp, and wet environments, indoor or outdoor, and direct contact with water
- Excellent mechanical impact and abrasion resistance
- Flexible at low temperatures (down to -25°C)
- UV, ozone, and weather-resistant
- Oil and chemical resistant
- Heat resistant up to 90°C in continuous operation
- Flame retardant and self-extinguishing according to IEC 60332-1
Conductor Cross Section (mm²) | Conductor Strands (No./mm) | Insulation Thickness (mm) | Outer Diameter (mm) | Max. Conductor Resistance (Ω/km) | Current Rating (A) |
1.5 | 30/0.25 | 0.8 | 6.8 | 13.3 | 16 |
2.5 | 50/0.25 | 0.9 | 8.0 | 7.98 | 25 |
4 | 56/0.30 | 1.0 | 9.5 | 4.95 | 32 |
6 | 84/0.30 | 1.0 | 10.8 | 3.30 | 41 |
10 | 80/0.40 | 1.2 | 13.6 | 1.91 | 57 |
NYM cable
NYM Cable is a multi-core PVC insulated and sheathed fixed installation low-voltage cable widely used in power and lighting wiring in residential and industrial buildings.
- Conductor: Finely stranded bare copper wire, conforming to IEC 60228 Class 5.
- Insulation: PVC insulation, Type TI1, heat-resistant and flame-retardant.
- Sheath: PVC sheath, mechanically and chemically resistant.
- Color: The sheath is gray or black, with the core color coded according to VDE standards.
- Indoor and outdoor fixed wiring;
- Power and lighting systems in residential, commercial, and industrial buildings;
- Wiring in distribution boxes and control cabinets;
- Can be installed in conduits, cable trays, and walls
- Excellent mechanical strength, flame retardancy, and corrosion resistance.
- Outstanding heat resistance, suitable for environments up to 70°C, in compliance with EN 60332-1.
- Flexible installation and long service life.
- Suitable for dry, humid, and indirect burial environments.
Rated Voltage | Operating Temperature | Minimum Bending Radius | Standards | Typical Cross Section |
450/750V | -5°C to +70°C | 6 × cable outer diameter | EN 50525-2-21, VDE 0250 | 1.5 mm² – 50 mm² |
NYY Cable is a multi-core low-voltage cable suitable for fixed installation. It has a strong PVC sheath and is suitable for underground, pipeline, and outdoor installation.
- Conductor: Multiple fine-stranded bare copper wires, conforming to IEC 60228 Class 2 or 5.
- Insulation: PVC insulation, Type TI1.
- Sheath: Typically gray PVC hard jacket, resistant to mechanical shock and corrosion.
- Color: Gray jacket, with cores colored as specified by the standard.
- Suitable for fixed installation in underground pipelines or trenches.
- Suitable for industrial equipment and power lines in residential buildings, such as shopping malls, office buildings, and hospitals.
- For outdoor overhead installation, additional protection is required because it only has a PVC sheath.
- Suitable for both wet and dry environments.
- High mechanical strength, abrasion resistance, and high tensile strength.
- Excellent corrosion and aging resistance in humid environments.
- Compliant with EN 50525 and VDE 0250 standards, suitable for a variety of installation environments, including direct burial.
- Compared to the entire project, NYY’s price was relatively economical and offered excellent value for money.
Rated Voltage | Operating Temperature | Minimum Bending Radius | Standards | Typical Cross Section |
450/750V | -25°C to +70°C | 6 × cable outer diameter | EN 50525-2-21, VDE 0250 | 1.5 mm² – 240 mm² |
HO5V-K & H05V-U cable
H05V-K & H05V-U Cable is a single-core PVC-insulated cable that complies with EN 50525 standards and is widely used for indoor fixed wiring and control equipment wiring. H05V-K has a multi-strand flexible conductor, while H05V-U has a single-strand solid conductor.
- Conductor:
H05V-K: Stranded fine copper wire (Class 5)
H05V-U: Solid copper wire (Class 1) - Insulation: Heat-resistant PVC insulation, available in brown, blue, black, gray, yellow/green, etc.
- Rated voltage: 300/500V
- Indoor fixed installation, lighting circuits, control cabinet wiring
- Wiring inside household appliances, distribution boards, and switch cabinets
- Suitable for dry environments (can be used inside enclosed pipes or equipment)
- The H05V-K offers excellent flexibility and tensile strength, making it suitable for applications requiring curved installations.
- The H05V-U offers increased rigidity and stability, making it suitable for straight or fixed wiring.
- Both models offer excellent insulation and heat resistance (maximum operating temperature 70°C).
- Both comply with EN 50525-2-31/2-11 standards.
Item | H05V-K | H05V-U |
Conductor Structure | Stranded copper wire (Class 5） | Single strand solid copper wire (Class 1) |
Insulation Materials | PVC | PVC |
Temperature Range | -5°C ~ +70°C | -5°C ~ +70°C |
Reference Standards | EN 50525-2-31 | EN 50525-2-11 |
Common Cross-sections | 0.5~1.5 mm² | 0.5~1.5 mm² |
Differences Between Low Voltage Cables
Low-voltage cables are commonly categorized by three voltage levels, such as 300/500V, 450/750V, and 0.6/1kV. However, these differences extend beyond voltage. Cables of the same voltage may vary in insulation material and sheath, while cables of different voltages may also differ in structure and cross-section. Users should contact ZMS to purchase the appropriate cable based on their project requirements. ZMS can also provide high-quality cables tailored to specific product specifications.
Comparison Within The Same Voltage Level
Comparing Different Insulation Materials — for example, PVC insulation vs. XLPE insulation—can vary in temperature resistance, flexibility, price, and service life.
Single-Core vs. Multi-Core — Choose the appropriate one based on your needs. Different core counts can affect cable flexibility and installation methods, leading to price differences.
Shielded vs. Unshielded — Electromagnetic interference protection differs. ZMS generally recommends shielded or unshielded cable based on the application scenario.
Fixed Installation vs. Mobile Installation — Compare the structure, sheath abrasion resistance, and flexibility.
The Difference Between 450/750V & 300/500V Cable
450/750V Cable | – Rated at 450/750V, it can withstand higher operating voltages and is suitable for powering higher-power devices. – The conductor cross-sectional area range is wider, up to 1.5mm², 2.5mm², or even larger, to accommodate higher currents. – It is mostly used in high power applications such as industrial power distribution, building wiring, power supply for motors, and large electrical equipment. – The insulation thickness is greater, the mechanical strength and voltage resistance are higher, and the long-term operation is safer and more reliable. |
– The rated voltage is 300/500V, and it is mainly used for low-voltage signal transmission or connection of light electrical equipment. – Usually, the conductor cross-sectional area is small, mostly in specifications such as 0.5mm², 0.75mm², and 1mm². – Commonly used in light-load applications such as household appliances, lighting fixtures, and internal wiring of electronic equipment. – The insulation layer is thin, light, and flexible, making it suitable for wiring in small spaces. |
Why Choose ZMS for Your Cable Needs?
- International Standard Compliance— All ZMS cables meet IEC, BS, VDE and other global standards, ensuring reliable quality.
- Custom Cable Solutions— Tailored conductor sizes, insulation materials, colors, and packaging to fit your exact needs.
- Strict Quality Control— Every production stage is monitored to maintain consistency and performance.
- Global Export Expertise— 30+ years of experience delivering cables to over 100 countries with professional logistics and documentation support.
- Comprehensive After-Sales Service— Technical support, installation guidance, and quick-response customer service for worry-free operation.
Our Certification Advantages
Since its establishment over 30 years ago, ZMS Cable has been researching major cable standards worldwide every year. We actively provide product certification standards so that customers can buy the safest and most reliable cable products. Our cable products have been verified by authoritative organizations, whether from American standards or British standards. In recent years, we have also been deeply involved in other standard fields, such as Portuguese standards and Turkish standards. Look for ZMS cables.
Ready to order Low Voltage 450/750V Cables or need a customized quote?