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

The LSZH-0.5-BROWN-1 is a 0.5mm² 2491B single core LSZH panel wiring cable rated 300/500V, supplied in brown on a 100m reel.

This H05Z-K flexible equipment wire is designed for internal wiring of appliances, switchgear, instrument panels, and metering equipment. Its low smoke zero halogen (LSZH) construction makes it the safe choice for enclosed environments where toxic fumes from burning cable could endanger life or damage sensitive equipment. The Class 5 flexible copper conductor ensures easy routing and termination in tight spaces.

Key Features

• LSZH Insulation (Type EI5): Cross-linked zero halogen insulation significantly reduces toxic smoke and fume emission in fire situations, protecting personnel and equipment.
• Class 5 Flexible Conductor: Plain annealed copper with 16/0.2mm stranding provides excellent flexibility for routing through panels and equipment enclosures.
• 300/500V Voltage Rating: Rated to H05Z-K standards, suitable for a wide range of low-voltage panel wiring and equipment applications.
• Compact 2.5mm Approximate Diameter: Keeps cable density manageable in crowded panels and trunking systems.
• Wide Temperature Range: Operates from -15°C to +90°C, suitable for demanding industrial environments.
• Equivalent to 20 AWG: Useful cross-reference for specifying against international equipment requirements.
• 100m Reel Length: Supplied in a practical quantity for panel building and equipment wiring projects.

Applications

This 0.5mm² 2491B LSZH cable is specifically suited to internal wiring of control panels, switchgear assemblies, instrument panels, and metering equipment. It is widely used in environments where fire safety is critical, such as public buildings, transport infrastructure, data centres, and industrial facilities. The LSZH properties make it the preferred choice wherever smoke and toxic fume reduction is a regulatory or safety requirement, replacing older PVC-insulated equivalents.

Standards and Certifications

Manufactured to BS EN 50525-3-41 (formerly BS7211), Cenelec HD22.9, and compliant with BS EN/IEC 60332-1-2 (flame propagation), BS EN 50267-2-1 (halogen-free), and BS EN/IEC 61034-1 (smoke density); BASEC certified.

Supplied in 100m lengths. Order code: 2491b-h05z-k-lszh-cable-0-5-brown-100m.

Frequently Asked Questions

What is the conductor stranding of this 0.5mm² 2491B LSZH cable?

The conductor comprises 16 strands of 0.2mm plain annealed copper wire, giving it Class 5 flexibility.

What is the difference between 2491B LSZH cable and standard PVC tri-rated cable?

The key difference is the insulation material — 2491B uses cross-linked LSZH insulation that emits minimal smoke and no halogen gases during a fire, whereas PVC cables produce dense, toxic fumes. This makes 2491B the required choice in life-safety and enclosed environments.

What is the minimum bending radius for this cable?

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

Can this 0.5mm² cable be used for mains power circuits?

No — at 0.5mm², this cable is intended for low-current panel wiring, control circuits, and instrument connections, not mains power distribution.

Where can I buy 0.5mm² 2491B Cable (H05Z-K) LSZH Brown Class 5 Flexible 300-500V LSZH-0.5-BROWN-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 for over 50 years, CSE are known for expert technical support, same-day despatch, and hundreds of highly positive customer reviews.