| Quantity: | |
|---|---|
Confirm the system voltage does not exceed the cable rating:
H07Z-U/R: 450/750V (U₀/U), suitable for low-voltage power and control circuits.
For three-phase 400V systems, 450/750V is standard. For lower-voltage control circuits, this rating provides adequate margin.
H07Z-U (solid): Suitable for fixed installations where the cable is not subject to movement or repeated bending. Easier to terminate in some terminal types.
H07Z-R (stranded, flexible): Better for routing through conduits with bends, and for connections requiring some flexibility during installation. Not intended for continuous flexing; use H07Z-K for higher flexibility.
Select U for simple fixed wiring; select R when installation requires easier pulling and bending.
Choose the conductor size based on:
Continuous load current
Permissible voltage drop
Ambient temperature and grouping
Short-circuit withstand
Typical range: 0.5 mm² to 240 mm². Common sizes for panel and building wiring: 1.5, 2.5, 4, 6, 10, 16, 25, 35 mm².
Halogen-free thermoplastic insulation: Rated 70°C continuous conductor temperature.
Low smoke and zero halogen: Meets IEC 60754 (halogen acid gas) and IEC 61034 (smoke density) when tested.
Flame retardant: Complies with IEC 60332-1 for single cable vertical flame propagation.
Confirm that the selected product meets the specific fire performance requirements of the project.
Public buildings and high-occupancy areas: Required where toxic gas and smoke emission must be minimized.
Tunnels, underground stations, and enclosed spaces: Low smoke emission aids evacuation and firefighting.
Hospitals, schools, data centers: Protect sensitive equipment and people from corrosive gases.
Outdoor or wet locations: H07Z-U/R is primarily for indoor fixed installations. For outdoor or wet areas, confirm suitability or consider alternative insulation.
High-temperature areas: Verify ambient temperature against the 70°C conductor limit.
Fixed installation: Typically 4 × outer diameter for unarmoured cable.
During installation: Avoid sharp bends that could damage insulation.
Select colors for phase, neutral, and protective earth:
Phase: Black, brown, grey.
Neutral: Blue.
Protective earth: Green/yellow.
Other: Red, white, orange for control or signal wiring.
Confirm against local wiring codes and project specifications.
H07Z-U/R: EN 50525-3-31, IEC 60227 (where applicable), VDE 0281-9.
Halogen-free: IEC 60754-1/2.
Smoke density: IEC 61034-1/2.
Flame retardance: IEC 60332-1.
RoHS / REACH: Confirm compliance if required.
Request test reports or certificates of conformity as needed.
Coils: 100 m, 200 m, or custom.
Drums: For larger cross-sections or long lengths.
Cut lengths: Pre-cut with ferrules or terminals if required.
Confirm packaging to protect insulation during transport and storage.
| Parameter | Unit | Typical Range / Option |
|---|---|---|
| Standard | — | EN 50525-3-31, VDE 0281-9 |
| Type | — | H07Z-U (solid) / H07Z-R (stranded), single-core |
| Rated Voltage U₀/U | V | 450/750 |
| Conductor | — | Plain copper, Class 1 (solid) or Class 2 (stranded) |
| Insulation | — | Halogen-free thermoplastic |
| Conductor Temperature | °C | 70 (continuous) |
| Ambient Temperature | °C | -15 to +70 (fixed installation) |
| Cross-Section Range | mm² | 0.5 – 240 |
| Outer Diameter | mm | Depends on cross-section |
| Bending Radius (fixed) | — | ≥ 4 × outer diameter |
| Halogen Content | — | Zero halogen per IEC 60754 |
| Smoke Density | — | Low smoke per IEC 61034 |
| Flame Retardance | — | IEC 60332-1 |
| Color | — | Black, blue, brown, grey, green/yellow, red, white, orange, custom |
| Packaging | — | Coil, drum, cut length |
| Length | m | 100, 200, 500, 1000, custom |
| RoHS / REACH | — | Available on request |
Note: Specifications vary by manufacturer and standard. Confirm actual dimensions, temperature rating, and approvals before ordering.
Public buildings: airports, railway stations, shopping centers
Tunnels, underground passages, and enclosed parking areas
Hospitals, schools, and other high-occupancy facilities
Data centers and telecommunication rooms
Control panels and distribution boards requiring low smoke
Emergency lighting and fire alarm circuits
Fixed wiring in areas where halogen-free cable is specified
H07Z-U/R
450/750V
Code:H07Z-U/R
Standard:CENELEC HD 22.9.BS 7211
Construcion:1-Solid or stranded copper conductor
2-Special LSFOH thermosetting insulation
Application:Places where there is risk of fire and crowded places like shopping malls, business centers, hotels,
schools, tunnels etc.
Technical Data:Max.operating temperature 70℃
Nominal Cross section | Number and Dia.of wires | Thickness of insulation | Average Overall Diameter | Approx Total Weight | Conductor DC resistance at 20℃ | Mas. Current Carrying Capacity at 30℃ |
mm² | No. ×mm | mm | mm | Kg/km | Ω/km | Air A |
H⁰7Z-U | ||||||
1.5 | 1.35 | 0.7 | 2.8 | 20.0 | 12.1 | 25 |
2.5 | 1.73 | 0.8 | 3.4 | 31.2 | 7.41 | 34 |
4 | 2.19 | 0.8 | 3.8 | 45.1 | 4.61 | 45 |
6 | 2.68 | 0.8 | 4.3 | 63.8 | 3.08 | 57 |
H⁰7Z-R | ||||||
1.5 | 7×0.51 | 0.7 | 3.0 | 21.5 | 12.1 | 25 |
2.5 | 7×0.66 | 0.8 | 3.6 | 32.9 | 7.41 | 34 |
4 | 7×0.83 | 0.8 | 4.1 | 47.7 | 4.61 | 45 |
6 | 7×1.02 | 0.8 | 4.7 | 67.8 | 3.08 | 57 |
10 | 7×1.34 | 1.0 | 5.9 | 109.2 | 1.83 | 75 |
16 | 7×1.70 | 1.0 | 7.0 | 167.6 | 1.15 | 100 |
25 | 7×2.20 | 1.2 | 8.4 | 262.3 | 0.727 | 130 |
35 | 7×2.55 | 1.2 | 9.4 | 348.1 | 0.524 | 160 |
50 | 7×3.00 | 1.4 | 10.9 | 471.6 | 0.387 | 200 |
