Factory-Direct Supply of Certified Wires and Conductors for Diverse Industrial Applications
H07Z1-U Wire
Voltage: 450/750V, test 2.5kV, CPR B2ca-s1,d1,a1 Euroclass
Conductor: Class 1 solid bare copper, BS EN 60228 — simplest LSOH termination
Insulation: HFFR type TI-7 thermoplastic per EN 50363-7, 70°C continuous
Bending: 15×Ø flexing / 10×Ø static — solid wire, bend once, hold shape
Range: 4 sizes 1.5-6mm², 21-65 kg/km, 100m/roll, glass fiber sheathing option
Fire: UNE-EN 60332 + EN 60332-3-24 bunched cable test, EN 50268 smoke, EN 50267 zero halogen
Standard: BS EN 50525-3-31, CE + CPR DoP, UNE + EN + IEC triple fire certification
Product Overview
Halogen Free Wire H07Z1-U is a single-core Class 1 solid copper conductor thermoplastic LSOH building wire manufactured to BS EN 50525-3-31. The -U suffix designates a single solid bare copper core — the simplest, most cost-effective conductor form — paired with HFFR type TI-7 thermoplastic halogen-free flame retardant insulation per EN 50363-7. H07Z1-U is the solid-core companion to the flexible H07Z1-K: identical electrical and fire-safety performance (450/750V, 70°C, 160°C short-circuit, CPR B2ca-s1,d1,a1), but with a solid conductor designed for screw-down terminals and protected fixed installations where the wire, once terminated, never moves. The LSOH safety profile — zero halogen acid gas emission per UNE-EN 50267, low smoke per UNE-EN 50268, self-extinguishing per UNE-EN 60332 — makes H07Z1-U the solid LSOH wire of choice for switchboard and distribution board internal wiring in European public buildings where CPR compliance is mandatory.
The solid conductor (-U) delivers the lowest per-metre cost of any LSOH building wire — no stranding operations, simplest manufacturing process — but at the expense of flexibility. The 15×D flexing and 10×D static bending radii are wider than the 5×D of the flexible H07Z1-K, reflecting the inherent stiffness of a single solid copper core versus a multi-strand flexible bundle. For fixed installations inside equipment enclosures and protected conduits where the wire is routed once during assembly and never moved again, the wider bending radius is irrelevant — the cost advantage and zero strand-separation risk at screw terminals are the dominant selection criteria. The four-size range (1.5, 2.5, 4, 6mm²) is intentionally limited to the cross-sections most commonly used for equipment internal wiring and branch circuit connections — larger solid conductors would be impractical to bend and are therefore not manufactured in the -U variant.
Bare copper conductor — Single solid orange copper core, Class 1 per BS EN 60228 — no stranding, the defining feature of the -U solid LSOH wire
LSOH thermosetting insulation — Black ring, HFFR TI-7 thermoplastic per EN 50363-7, zero halogen, CPR B2ca-s1,d1,a1
Class 1 Solid Copper (-U)
Single solid bare copper core per BS EN 60228 Class 1. Simplest termination — no strand separation. Lowest per-metre cost in the LSOH family.
HFFR TI-7 Thermoplastic LSOH
Halogen Free Flame Retardant insulation per EN 50363-7. 70°C continuous, 160°C short-circuit. Zero halogen emission per UNE-EN 50267.
15×Ø / 10×Ø Bending
Solid conductor bending radius — bend once during assembly, hold shape forever. For protected fixed installations, not repeated flexing.
CPR B2ca-s1,d1,a1
EU Construction Products Regulation fire class — B2ca (limited fire), s1 (low smoke), d1 (no droplets), a1 (low acidity). Mandatory for EU public buildings.
4 Sizes 1.5-6mm²
Equipment internal wiring sizes only — 1.5, 2.5, 4, 6mm² (OD range 2.4-5.0mm). 100m/roll, export wooden case.
BS EN 50525-3-31
Current-generation European thermoplastic LSOH standard. CE marked, CPR Declaration of Performance certified — ready for EU public works tenders.
Technical Characteristics
| Rated Voltage | 450/750V |
| Test Voltage | 2.5 kV |
| Max. Conductor Temperature | +70°C (continuous, thermoplastic limitation) |
| Max. Short-Circuit Temperature | +160°C (max 5 seconds) |
| Flexing Bending Radius | 15 × outer diameter |
| Static Bending Radius | 10 × outer diameter |
| Flexing Temperature | ≥ +5°C |
| CPR Classification | B2ca-s1,d1,a1 per EN 50575 |
| Fire Retardant | UNE-EN 60332 / EN 60332 / IEC 60332 & UNE-EN 60332-3-24 (bunched cable test) |
| Smoke Density | UNE-EN 50268 / EN 50268 |
Applicable Standards
| Standard | Scope |
|---|---|
| BS EN 50525-3-31 | European standard for halogen-free thermoplastic insulated flexible cables 450/750V. Covers H07Z1-U solid conductor LSOH building wire. |
| EN 50363-7 | Insulation compound — HFFR type TI-7 thermoplastic halogen-free flame retardant material for low voltage energy cables. |
| BS EN 60228 Class 1 | Conductor standard — solid copper conductor specification for fixed wiring applications. |
| UNE-EN 60332 / EN 60332 / IEC 60332 | Single cable vertical flame test (IEC 60332-1) + bunched cable vertical flame spread test (EN 60332-3-24) — dual fire certification. |
| UNE-EN 50267 / EN 50267 | Halogen acid gas emission — zero HCl/HF/HBr certified. Spanish (UNE) and CENELEC (EN) dual-standard testing. |
LSOH Family Standards Map
| Type | Standard | Class | Insulation | Temp | Bend | Range |
|---|---|---|---|---|---|---|
| H07Z1-U | EN 50525-3-31 | Class 1 (solid) | HFFR TI-7 (thermo) | 70°C | 15×/10×Ø | 1.5-6mm² |
| H07Z1-K | EN 50525-3-31 | Class 5 (flexible) | HFFR TI-7 (thermo) | 70°C | 5×D | 1.5-240mm² |
| H05Z-U / H07Z-U | VDE 0282-9 | Class 1 (solid) | XLPE (thermoset) | 90°C | 15×/10×Ø | 0.5-10mm² |
| H07Z-R | HD 22.9 S2 | Class 2 (stranded) | XLPE EI5 (thermoset) | 90°C | 8×D | 1.5-240mm² |
| H05Z-K / H07Z-K | HD 22.9 S2 | Class 5 (flexible) | XLPE EI5 (thermoset) | 90°C | 8×D | 0.5-240mm² |
| HFIX | KS C 3341 | Class 1 & 2 | Polyolefin | 90°C | 4×D | 1.5-300mm² |
Technical Specifications
Class 1 solid bare copper per BS EN 60228. HFFR type TI-7 thermoplastic LSOH insulation per EN 50363-7. All 4 sizes single core, 100m per roll. Glass fiber sheathing option available on request.
| Cross Section (No. × mm²) | Insulation (mm) | Overall Dia. (mm) | Copper Weight (kg/km) | Total Weight (kg/km) | 20°C Res. (Ω/km) |
|---|---|---|---|---|---|
| 1 × 1.5 | 0.7 | 2.8 | 14.4 | 20.9 | 12.1 |
| 1 × 2.5 | 0.7 | 3.4 | 24 | 31.5 | 7.41 |
| 1 × 4 | 0.7 | 3.8 | 38 | 47.7 | 4.61 |
| 1 × 6 | 0.7 | 4.4 | 58 | 65.2 | 3.08 |
Packaging & Delivery
| Parameter | Standard |
|---|---|
| Package | 100m per roll, export wooden case & pallet; optional glass fiber sheathing for additional mechanical protection |
| Roll Marking | Manufacturer, H07Z1-U, 450/750V, LSOH HFFR, CPR B2ca-s1,d1,a1, cross-section, length, weight, batch, CE/CPR/UNE marks |
| Colour Options | Standard LSOH identification colours |
| Outer Protection | Wooden case |
| Delivery Condition | Factory-new, tested per BS EN 50525-3-31, CPR DoP certified, UNE & CE marked |
Typical Applications
H07Z1-U solid LSOH wire is the specialist fixed-installation wire for European equipment and switchboard manufacturers where solid copper termination reliability and CPR compliance converge:
Switchboard Internal Wiring
Solid conductor for busbar-to-terminal connections — zero strand separation risk under screw terminals. Critical for quality-controlled switchgear assembly lines.
EU Public Building Equipment
CPR B2ca-s1,d1,a1 certification enables use in equipment installed in European public buildings — mandatory compliance since the 2017 CPR deadline.
Panel Builder Assembly
Solid LSOH wire for volume panel assembly — lowest rework rate from strand-related terminal failures. Preferred by European panel builders for fixed internal wiring.
Triple Fire Standard Certified
UNE-EN 60332 (single cable) + EN 60332-3-24 (bunched cable) + EN 50268 (low smoke) + EN 50267 (zero halogen) — the most comprehensive LSOH fire test suite.
EN 50525 Current Standard
Manufactured to the current-generation European LSOH standard — not the legacy HD 22.9 family. CPR DoP certified and traceable.
Lowest Cost LSOH Wire
4 solid sizes only — the simplest LSOH manufacturing process delivers the lowest per-metre cost. Economic LSOH compliance for fixed internal wiring.
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Frequently Asked Questions
As a factory, we offer flexible MOQ depending on the cable type. For standard stock items, MOQ is low; for customized specifications, please contact our sales team for a detailed quote.
Yes, Qiangli cables are manufactured in compliance with international standards such as UL, CE, TUV, and VDE. We provide full test reports and certificates upon request.
Absolutely. We have a dedicated R&D team that can customize cable structure, material, color, and printing to meet your specific project needs.
For standard products, lead time is usually 7-15 days. For large-scale project orders or customized products, it typically ranges from 20 to 30 days.
Yes, we provide free samples for most standard cables. You only need to cover the international courier costs. Contact us to arrange your sample shipment.