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6491B / H07Z-R Cable

6491B / H07Z-R Cable Click here to view the cable arrow-no-circles.png

Applications Overview

The 6491B cable is a single core stranded copper conductor cable for use in conduits, trunking and other fixed wiring protected installations. It is recommended for use in dry environments, for applications such as wiring lighting fixtures and appliances, distributor boards and switchboards.

Manufactured to harmonised (HAR) European Standard H07Z-R, the 6491B cable has a Low Smoke Zero Halogen (LSZH) insulation, making it suitable for insallations in public buildings where, in the event of fire, smoke and toxic fumes would pose a risk to life and equipment.
This cable has a voltage rating of 450/750V and an operating temperature range of 0
oC to +90oC.


6491B / H07Z-R cable construction

Conductor H07Z-R: Class 2 stranded plain annealed copper conductor to BS EN 60228 (formerly BS6360)
Insulation Low Smoke Zero Halogen (LSZH) Type EI5 according to BS EN 50363 and flame retardant to BS EN 580363


6491B cable dimensions

Some of our most popular 6491B cable sizes include:

Part Number Nominal Cross-Sectional Area Nominal Overall Diameter mm Nominal Weight kg/km
A3Z6491B015* 1.5mm2 3.4 22
A3Z6491B025* 2.5mm2 4.1 35
A3Z6491B040* 4mm2 4.7 50
A3Z6491B060* 6mm2 5.4 72
A3Z6491B10* 10mm2 6.8 121
A3Z6491B16* 16mm2 8.0 182
A3Z6491B25* 25mm2 9.8 285
A3Z6491B35* 35mm2 11.0 390
A3Z6491B50* 50mm2 13.2 510
A3Z6491B70* 70mm2 15.1 710
A3Z6491B95* 95mm2 17.0 980
A3Z6491B120* 120mm2 19.0 1220
A3Z6491B150* 150mm2 21.0 1500
A3Z6491B185* 185mm2 23.5 1910
A3Z6491B240* 240mm2 26.5 2490
A3Z6491B300* 300mm2 29.5 3100
A3Z6491B400* 400mm2 33.5 3950
A3Z6491B500* 500mm2 37.0 5000
A3Z6491B630* 630mm2 41.0 6350

Product codes have the asterisk (*) replaced by the insulation colour code. It is generally supplied in the following colours:

Red (RD), Black(BK), Blue (BL), Yellow (YW), White (WH), Grey (GR), Brown (BR), Green/yellow (GY) (for earthing applications). We also supply 6491B in other colours on request.

Our 6491B is BASEC-approved and manufactured in accordance with harmonised standards.

Refer to our product PDF for full technical specifications or speak to one of our sales team for more information. 

6491B, H07Z-R are also known as

Low Smoke Zero Halogen singles or LSZH earthing wire. The harmonised code is frequently searched for using HO7Z-R.

Range of Cables

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Cable Standards and Approvals

6491B / H07Z-R Cable

BS EN 50525-3-41 (previously BS 7211), BASEC approved

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Call Sales on +44 (0)20 7241 8787

Technical Hotline +44 (0)20 7241 8500

The Cable Lab®

UKAS-accredited specialist cable testing laboratory

About Eland Cables

The Cable Lab® our in-house cable testing facility, is UKAS-accredited to ISO 17025, which is the single most important standard for calibration and testing laboratories around the world. Accreditation to this international standard demonstrates our laboratory's technical competence and the accuracy of its results.

For our customers, it means peace of mind. They can have full confidence in the quality of our products and can demonstrate due diligence in selecting their cable supplier.

Our customers can also rely on the Cable Lab's services for an independent, objective and comprehensive quality assessment of cables procured from third parties.


About Eland Cables

About Eland Cables

Established in 1975, Eland Cables is a supplier of power, data, instrumentation and control cables and cable accessories to the world's most demanding industries and to some of its most prestigious projects. Our reputation is built on an unswerving focus on quality, technical expertise and customer service.


Our focus on quality has resulted in our in-house specialist cable testing facility securing the ISO 17025 accreditation. This certifies the competence, impartiality and performance capability of our laboratory and its evaluations. In turn, it means peace of mind for our customers with regard to the quality of the cables they source from us.

Expert tecHnical support

Our highly-qualified technical team is on hand to provide technical support with all aspects of cable selection, technical specification, regulatory requirements, and bespoke cable design and manufacture.

Complete Cable Solutions

We are a key contributor to projects in over 100 countries every year, adding value through comprehensive technical support, reliable logistics, innovative solutions, and a customer-centric approach.