2491B / 6701B (H05Z-K & H07Z-K) Cable
2491B / 6701B (referred to as H05Z-K & H07Z-K under the European harmonised cable standards) are primarily used for panel wiring in applications where Low Smoke Zero Halogen (LSZH) properties are required. Designed for use in the switch control, relay and instrumentation panels of power switchgear and for purposes such as internal connectors in rectifier equipment, motor starters and controllers, these single core cables can be installed in pipes or ducts, and used in the internal wiring of appliances with maximum operating temperatures of +90oC.
2491B / 6701B (H05Z-K & H07Z-K) cable construction
| Conductor | Flexible copper (Class 5) |
| Insulation | Low Smoke Zero Halogen (LSZH) Type EI5 |
The 2491B / 6701B's Type EI5 thermoset LSZH insulation makes this range suitable for use in environments where smoke and toxic fumes arising in a fire may threaten life or equipment. It is therefore generally for use in public areas and government and commercial buildings.
H05Z-K & H07Z-K Cable Sizes and Voltage Rating
| Sizes | Voltage rating | |
|---|---|---|
| H05Z-K | 0.5mm2 to 1mm2 | 300/500V |
| H07Z-K | 1.5mm2 to 240mm2 | 450/750V |
2491B cable dimensions
Commonly requested 2491B cable sizes include:
| Part Number | Nominal Cross-Sectional Area | Nominal Overall Diameter mm | Nominal Weight kg/km |
|---|---|---|---|
| A2Z*00050 | 0.5mm2 | 2.2 | 8.7 |
| A2Z*00075 | 0.75mm2 | 2.5 | 11.3 |
| A2Z*0010 | 1.0mm2 | 2.7 | 13.9 |
| A2Z*0015 | 1.5mm2 | 3.1 | 19.3 |
| A2Z*0025 | 2.5mm2 | 3.8 | 30.9 |
| A2Z*0040 | 4mm2 | 4.4 | 44.9 |
| A2Z*0060 | 6mm2 | 5.0 | 64.2 |
| A2Z*010 | 10mm2 | 6.4 | 108.2 |
| A2Z*016 | 16mm2 | 7.8 | 163.4 |
| A2Z*025 | 25mm2 | 9.6 | 248.1 |
| A2Z*035 | 35mm2 | 10.9 | 340.6 |
| A2Z*050 | 50mm2 | 13.1 | 484.2 |
| A2Z*070 | 70mm2 | 14.7 | 671.0 |
| A2Z*095 | 95mm2 | 16.9 | 895.8 |
Additional cross sectional sizes are available for the single core 2491B cable. The asterisk in the product codes is replaced by the LSZH insulation colour code.
For a PVC sheathed version of this cable see our 2491X cable.
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Cable Standards and Approvals
2491B / 6701B (H05Z-K & H07Z-K) Cable
BS EN 50525-3-41 (previously BS 7211 Table 3 and 4b CENELEC HD22.9), BS EN/IEC 60332-1-2, BS EN 50267-2-1, BS EN/IEC 61034-1
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