0.5mm² 2491B Cable (H05Z-K) LSZH Blue Class 5 Flexible 300-500V LSZH-0.5-BLUE-1

The LSZH-0.5-BLUE-1 is a 0.5mm² 2491B LSZH single core cable rated 300/500V, supplied in blue on a 100m reel. This flexible H05Z-K panel wiring cable features a Class 5 plain annealed copper conductor with cross-linked low smoke zero halogen insulation, making it ideal for environments where fire safety is critical. It is designed for internal wiring of appliances, switchgear, instrument panels, and metering equipment.

Key Features

• LSZH Insulation (Type EI5): Cross-linked low smoke zero halogen insulation minimises toxic fume and smoke emission in a fire, protecting both personnel and sensitive equipment.
• Class 5 Flexible Conductor: The 16/0.2mm stranded plain annealed copper construction provides excellent flexibility, making routing through tight spaces and termination straightforward.
• 300/500V Voltage Rating: Rated to H05Z-K standards, suitable for a wide range of panel wiring and equipment applications.
• Compact 2.5mm Approximate Diameter: The slim profile allows high-density wiring within control panels and enclosures without excessive cable bulk.
• Wide Operating Temperature: Rated from -15°C to +90°C, ensuring reliable performance across demanding industrial environments.
• BASEC Certified: Independent third-party certification provides assurance of quality and compliance.
• Approximate 20 AWG Equivalent: Useful for cross-referencing with international specifications and imported equipment documentation.

Applications

This 0.5mm² 2491B LSZH cable is specifically suited for internal wiring of appliances, switchgear panels, instrument panels, and metering equipment. Its low smoke zero halogen properties make it the preferred choice in locations where smoke and toxic fumes arising in a fire could threaten life or damage sensitive equipment — such as hospitals, transport infrastructure, data centres, and public buildings. The flexible Class 5 conductor and slim 2.5mm diameter make it particularly well suited to high-density panel builds where space is at a premium.

Standards and Compliance

Manufactured to BS EN 50525-3-41 (formerly BS7211), compliant with IEC 60228, Cenelec HD22.9, BS EN/IEC 60332-1-2, BS EN 50267-2-1, and BS EN/IEC 61034-1, and BASEC certified.

Supplied in blue, 100m length. Order code: 2491b-h05z-k-lszh-cable-0-5-blue-100m.

Frequently Asked Questions

What is the difference between 2491B H05Z-K and H07Z-K cable?

H05Z-K is rated at 300/500V while H07Z-K is rated at 450/750V — both share the same LSZH construction, but H07Z-K is specified for higher voltage applications.

What is the bending radius of this 0.5mm² 2491B LSZH cable?

The minimum bending radius is 3 times the overall diameter, which equates to approximately 7.5mm for this cable.

Can this cable be used in environments with extreme temperatures?

Yes, it is rated for continuous operation from -15°C to +90°C.

Why choose LSZH cable over standard PVC panel wire?

LSZH cable produces significantly less smoke and no halogen-based toxic gases when exposed to fire, making it essential where fire safety regulations demand protection of life and sensitive equipment.

Where can I buy 0.5mm² 2491B Cable (H05Z-K) LSZH Blue Class 5 Flexible 300-500V LSZH-0.5-BLUE-1 in the UK?

CSE Distributors, with branches in Wooburn Green and Southampton, supply this cable alongside a comprehensive range of electrical and industrial products. A family-run business with over 50 years' experience, CSE are backed by hundreds of highly positive customer reviews and offer same-day despatch with next-day UK delivery.