What Is Tri-rated H05V2-K PVC Flexible Cable?

Tri-rated H05V2-K PVC flexible cable is a high-temperature, flame-retardant single-core panel wire designed for internal wiring within switchgear, control gear, and electrical cabinets. It conforms simultaneously to three major global standards: [1] BS 6231 (Type CK), UL Style 1015/1283, and CSA C22.2 No. 127. Constructed with a flexible Class 5 fine-wired annealed copper conductor and a specialized heat-resistant PVC insulation, it operates continuously at temperatures up to 105°C. The “H05V2-K” designation indicates a harmonized European standard rating of 300/500V for small cross-sectional areas ($\le 1.0\text{ mm}^2$), delivering high flexibility and heat endurance for dense panel layouts.

Technical Parameter Comparison Matrix

Core Standards Compliance and Triple Rating

The term “Tri-rated” signifies that the cable meets the manufacturing and safety specifications of three distinct international standardization bodies within a single construction:

• British Standard (BS 6231 Type CK): [1] Governs flexible PVC-insulated cables used in power and control switchgear circuits. Specifies a maximum continuous operating temperature of 90°C in Europe.
• Underwriters Laboratories (UL 758 / Style 1015): [2] Qualifies the wire for Appliance Wiring Material (AWM) applications in North America, raising the continuous temperature rating to 105°C at a 600V nominal rating.
• Canadian Standards Association (CSA C22.2 No. 127): Certifies the wire as Type TEW (Thermoplastic Electrical Wire) for internal wiring of equipment under Canadian electrical codes.

This triple certification allows original equipment manufacturers (OEMs) to standardize inventory across panel assemblies destined for European, North American, and global markets without replacing internal wiring specifications.

Structural and Material Specifications

H05V2-K cable is engineered specifically to balance tight bending radii with thermal resilience:

• Conductor Construction: Utilizes high-purity Class 5 plain annealed copper wires according to [3] IEC 60228. The fine stranding provides exceptional flexibility, resisting fatigue caused by mechanical vibration in industrial switchgear.
• Insulation Compound: Features a high-grade Heat-Resistant Polyvinyl Chloride (HR-PVC) insulation layer. It offers high dielectric strength, oil resistance, and self-extinguishing flame retardancy compliant with IEC 60332-1-2 and UL VW-1.

Harmonized Designation Breakdown:

• H: Harmonized standard designation.
• 05: Rated voltage of 300/500V.
• V2: PVC compound rated for continuous 90°C operation under HAR rules.
• K: Flexible conductor for fixed installation (Class 5 stranding).

Primary Applications and Installation Guidelines

Tri-rated H05V2-K cables are optimized for low-voltage signal, control, and instrumentation circuits where space is limited and temperature elevation is anticipated.

Key Application Environments

• Control Panels & Switchgear: Wiring signal lines, relays, and microcontrollers inside power distribution boards.
• Motor Starters & Controllers: Internal connections where localized thermal dissipation from coils and contactors exceeds 70°C.
• Rectifiers and Inverters: High-density cabinet layouts requiring small-diameter flex wire with 600V dielectric insulation.

Installation & Mechanical Constraints

• Minimum Bending Radius: $6 \times$ overall cable diameter for fixed installation; $10 \times$ overall diameter for free flexing.
• Temperature Limits: Static installation from $-15^\circ\text{C}$ to $+105^\circ\text{C}$; flexing movement down to $+5^\circ\text{C}$.
• Conductor Termination: Must be crimped using appropriate insulated bootlace ferrules or ring lugs to maintain stranded conductor integrity before clamping into terminal blocks.

CJDL CABLE Engineering Insight: In dense panel layouts where coil and contactor heat exceeds 70°C, tri-rated H05V2-K with HR-PVC insulation is the recommended replacement for standard H07V-K. All CJDL CABLE tri-rated wires are manufactured and routinely tested to BS 6231, UL 758, and CSA C22.2 No. 127, letting OEMs standardize inventory across European, North American, and global panel markets.

References

[1] Tratos Group. BS 6231 Cable Standard [EB/OL]. 2026-09-22.

[2] Wikipedia. UL (Safety Organization) [EB/OL]. 2026-09-22.

[3] Wikipedia. IEC 60228 [EB/OL]. 2026-09-22.