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2491B / 6701B (H05Z-K & H07Z-K) Cable

2491B / 6701B (H05Z-K & H07Z-K) Cable Click here to view the cable arrow-no-circles.png

Applications Overview

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.  

H05Z-K / H07Z-K

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.

Range of Cables

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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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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.