H07V-K 6mm² Flexible Copper Wire | CE Control Panel & Machinery Wiring

A rigid wire pulled around a tight corner inside a control panel. Insulation crackles at the bend radius. Weeks later, a dead short halts the whole assembly line. Diagnostics are slow. Rework costs mount. The root cause is almost always the same: wiring that was never designed to flex where it needed to. This H07V-K 6mm² cable removes that failure point. Its Class 5 fine-stranded conductor routes cleanly through deep enclosures, hinged doors, and oily machinery. Full compliance with EN 50525‑2‑31 and CE marking helps your panels clear EU site acceptance without a single non‑conformity note.

Why This 6mm² H07V-K Wire Reduces Assembly Risk

Fine‑Stranded Copper · Class 5 Flexibility
[Feature] Annealed bare copper conductor built to Class 5 according to EN 60228. 6.0 mm² cross‑section with a maximum single‑strand diameter of 0.31 mm.
[Advantage] Requires minimal bending force, even when routed through densely populated trunking and behind DIN rails.
[Benefit] Panel fitters terminate each wire faster. Strand breaks at screw‑clamp terminals drop to near zero. Per‑panel wiring hours fall, and hot‑joint failures during thermal cycling become rare.

Control‑Room‑Grade PVC Insulation
[Feature] PVC compound type TI3, extruded with consistent wall thickness and a smooth surface finish.
[Advantage] Resists mineral oils, soluble cutting fluids, and intermittent condensation found on factory floors.
[Benefit] No swollen, tacky insulation after months of exposure to hydraulic mist inside a CNC machine tool. Maintenance crews spend less time tracing intermittent earth faults caused by degraded sleeving.

Built to a Harmonised European Standard – No Paperwork Surprises
[Feature] Manufactured strictly to EN 50525‑2‑31 and CE marked under the Low Voltage Directive 2014/35/EU.
[Advantage] Third‑party inspectors recognise the printed legend immediately.
[Benefit] Export shipments to the EEA clear customs without belated requests for supplementary cable certificates. Qualified control panel builders can file the cable test report directly with their IEC 61439‑1 technical dossier.

450/750 V Rating with Proven Dielectric Integrity
[Feature] U₀/U rated at 450/750 V; routine test voltage of 2.5 kV AC.
[Advantage] Handles temporary overvoltages that routinely appear on the mains side of servo drives and contactor coils.
[Benefit] Protects downstream PLCs, safety relays, and I/O modules from cross‑circuit flashovers during commissioning. One less root cause to investigate when a logic fault triggers a line stop.

Consistent Outer Diameter · Repeatable Ferrule Crimping
[Feature] Outer diameter held to approx. 5.0 mm – 5.4 mm.
[Advantage] A predictable diameter means standard tube‑type ferrules slide on cleanly without tearing.
[Benefit] Wire preparation time stays constant across production batches. Automated wire‑processing machines feed and cut the cable with fewer recalibrations.

Technical Specifications of 6 mm² H07V-K

Applications Where 6mm² H07V-K Replaces Rigid Wire

• Industrial control panels (IEC 61439 assemblies). The flexible Class 5 conductor routes from the main circuit breaker to busbar tap‑offs without stressing terminal blocks, even inside enclosures only 200 mm deep.
• CNC machine tool internal wiring. Resists cutting‑oil mist and micro‑vibrations that crack standard semi‑rigid insulation over time.
• Frequency inverters and servo drive cubicles. Low bundle‑inductance wiring for motor outputs keeps conducted EMI within the drive manufacturer’s limits and simplifies CE‑EMC declarations.
• Generator sets and CHP containers. Absorbs constant low‑amplitude vibration from the prime mover, preventing conductor fatigue at alternator terminals.
• HVAC control compartments. Eliminates cable‑tie de‑rating when routing behind hinged access panels in air‑handling units, where the insulation must survive repetitive flexing during maintenance.

Compliance and Certification

• ✅ EN 50525‑2‑31 – Harmonised design for flexible wiring
• ✅ CE Marked – LVD 2014/35/EU, EMC 2014/30/EU (where installed)
• ✅ RoHS 3 (2011/65/EU) – restricted substances tested
• ✅ IEC 60332‑1‑2 – Flame retardant single‑cable test
• ✅ EN 60228 – Class 5 conductor construction
• ✅ ISO 9001:2015 – Certified factory quality management system

H07V‑K 6mm² – Engineers’ Most Asked Questions

When should I use H07V‑K instead of H05V‑K for 6mm² wiring inside a control panel?
H05V‑K is rated at 300/500 V with a thinner TI2 insulation layer. It works for 24 V signal circuits but not for the supply side of a 400 V three‑phase network. Use H07V‑K for any connection downstream of the main isolator that carries phase voltage—servo mains feeds, VFD inputs, transformer primaries, or motor contactor outputs. The thicker TI3 wall and 450/750 V rating satisfy the clearance and creepage requirements of EN 60204‑1, and it withstands the transient overvoltages that cheap auto‑ranging voltmeters flag during commissioning.

Is a ferrule mandatory when terminating 6mm² Class 5 stranded wire in screw‑type terminals?
Not every terminal manufacturer mandates it, but for M4 or M5 screw‑clamp terminations, a proper tube‑type ferrule eliminates the risk of individual strands splaying and breaking under torque. A crimped ferrule also creates a gas‑tight contact area that stays stable through hundreds of thermal cycles. For safety earth (PE) connections, many test houses now require ferrules to pass the IEC 60204‑1 earth bond test without resistance drift. Skipping the ferrule saves seconds on the assembly bench but often costs hours during field fault‑finding.

Can this 6mm² H07V‑K be used for outdoor motor connections if placed inside a flexible conduit?
The PVC insulation meets the resistance‑to‑aging requirements of EN 50525‑2‑31 but has limited UV stability. Route the wire inside a UV‑resistant nylon or galvanised steel conduit that prevents direct sunlight exposure. Moisture ingress inside the conduit must still be managed: use drainage glands at the lowest point if condensation is expected. For outdoor terminations exposed to wet conditions without conduit, consider a cross‑linked polyolefin wire such as H07Z‑K, which is better suited to high‑humidity environments.

How is the current‑carrying capacity of 6mm² H07V‑K derated when installed in multi‑layer trunking?
According to installation method B2 (inside conduit or trunking) per HD 60364‑5‑52, a single 6 mm² copper conductor carries 40 A at 30 °C ambient. For two loaded circuits side‑by‑side, apply a grouping factor of 0.80, reducing the capacity to 32 A. Ambient temperatures above 30 °C require further derating using the tables in EN 60204‑1 Annex A. We ship a printed derating chart inside every full‑reel order.

Request a Sample, BOM‑Based Quote, or Full Datasheet

Specify your wire list with colour codes and cut‑length requirements. Our engineers return a per‑project price and delivery schedule within one working day.

Request a free 1‑metre sample for your flex‑rig and terminal compatibility tests. Test it against your current semi‑rigid wiring stock—measure the insertion time per terminal, the bend radius you can achieve, and the resistance reading after a 500‑cycle thermal‑rise test. You will see where the production bottleneck moves next.

Send your inquiry through the form on this page. For large annual volume or specific country‑of‑origin documentation needs, ask for our EU‑based warehouse stock list and confirmed IEC 60228 test reports.