RVS Twisted Soft Wire Specifications: Sizes, Types, Electrical Parameters & Application Guide (Fire Alarm Cable Series)

Overview of RVS Twisted Soft Wire

RVS twisted soft wire is a PVC insulated copper core flexible twisted cable, widely used in fire alarm systems, building wiring, and low-voltage electrical applications.

It is commonly referred to as:

• Twisted wire

• Flower wire

• Fire alarm cable

Rated voltage:

• 300/300V

1. Standard RVS Twisted Wire (RVS Model)

Product Description

Standard copper core PVC insulated twisted soft wire for general electrical use.

Key Specifications

• Model: RVS

• Core structure: 2-core twisted

• Conductor size: 0.5 mm² – 4 mm²

• Common sizes:

  • 2×0.5 mm²

  • 2×0.75 mm²

  • 2×1.0 mm²

  • 2×1.5 mm²

  • 2×2.5 mm²

  • 2×4 mm²

Color Options

Red, yellow, blue, green, black, dual color (custom colors available)

Electrical Rating

• Rated voltage: 300/300V

Standard Packaging

• 100 meters per roll (full meter standard)

Temperature Range

• Long-term working temperature: ≤ 70°C

• Installation temperature: ≥ 0°C

Applications

• Household wiring

• Lighting circuits

• Air conditioning power connection

• Fire alarm signal wiring

• General building electrical systems

2. Low Smoke Halogen-Free Flame Retardant & Fire Resistant RVS (WDZN-RVS)

Product Description

LSZH (low smoke zero halogen) flame-retardant and fire-resistant twisted wire for high-safety environments.

Key Specifications

• Model: WDZN-RVS

• Structure: 2-core twisted

• Conductor size: 0.5 mm² – 4 mm²

• Common sizes:

  • 2×0.5 mm²

  • 2×0.75 mm²

  • 2×1.0 mm²

  • 2×1.5 mm²

  • 2×2.5 mm²

  • 2×4 mm²

Applications

• Fire protection systems

• Emergency lighting circuits

• Public buildings

• High-rise buildings

• Underground facilities

Key Features

• Low smoke emission

• Halogen-free material

• Fire-resistant performance

• Safe for evacuation environments

3. Fire Resistant RVS Cable (NH-RVS)

Product Description

Fire-resistant twisted wire designed to maintain circuit operation under fire conditions.

Key Specifications

• Model: NH-RVS

• Structure: 2-core twisted

• Size range: 0.5 mm² – 4 mm²

• Common sizes:

  • 2×0.5 mm²

  • 2×0.75 mm²

  • 2×1.0 mm²

  • 2×1.5 mm²

  • 2×2.5 mm²

  • 2×4 mm²

Applications

• Fire alarm control circuits

• Emergency power systems

• Safety-critical building systems

4. Flame Retardant RVS Cable (ZR-RVS)

Product Description

Flame-retardant twisted soft wire designed to slow down fire spread.

Key Specifications

• Model: ZR-RVS

• Structure: 2-core twisted

• Size range: 0.5 mm² – 4 mm²

• Common sizes:

  • 2×0.5 mm²

  • 2×0.75 mm²

  • 2×1.0 mm²

  • 2×1.5 mm²

  • 2×2.5 mm²

  • 2×4 mm²

Applications

• Building wiring systems

• Fire alarm networks

• Industrial control systems

Common Technical Parameters (All RVS Types)

• Rated voltage: 300/300V

• Core structure: 2-core twisted

• Standard length: 100 meters per roll

• Working temperature: ≤ 70°C

• Installation temperature: ≥ 0°C

• Bending radius:

  • OD < 25 mm: ≥ 4D

  • OD ≥ 25 mm: ≥ 6D

Key Advantages of RVS Twisted Wire

• Strong electrical insulation performance

• Good flame retardant properties

• Flexible and easy installation

• Stable signal transmission

• Suitable for fire safety systems

• Wide application in residential and commercial buildings

Conclusion

RVS twisted soft wire series (RVS / ZR-RVS / NH-RVS / WDZN-RVS) provides a complete solution for fire alarm, building wiring, and safety electrical systems. With multiple safety grades and flexible specifications, it is widely used in residential, commercial, and industrial infrastructure projects.