H05Z-U / H07Z-U / H07Z-R / H07Z-K LSZH Building Wire

Product Overview

The H05Z/H07Z series matches the H05V/H07V range in conductor types and sizes but uses a low-smoke, zero-halogen (LSZH) insulation. In a fire, ordinary PVC wires emit dense black smoke and corrosive hydrogen chloride that obscures escape routes and destroys electronics; LSZH wires emit minimal smoke and no halogen acids — increasingly mandated by building codes for public spaces.

Our H05Z/H07Z range is certified by TÜV Rheinland to BS EN 50525-3-31, available in solid (U), stranded (R) and flexible (K) conductors from 1.5 mm² to 95 mm².

Range Overview

Type	Conductor	Voltage	Sizes	Typical Use
H05Z-U	Solid Cu, class 1	300/500 V	0.5–1.5 mm²	LSZH zones, lighting circuits
H07Z-U	Solid Cu, class 1	450/750 V	1.5–95 mm²	Fixed installation, public buildings
H07Z-R	Stranded Cu, class 2	450/750 V	1.5–95 mm²	Distribution boards, escape routes
H07Z-K	Flexible Cu, class 5	450/750 V	1.5–95 mm²	Panels, instrumentation wiring

Key Features

Standards & Certifications

• BS EN 50525-3-31 — single-core LSZH insulated, non-sheathed cables
• TÜV Rheinland certificate R 50562586 (view on certificates page)
• Low smoke per IEC 61034; zero halogen per IEC 60754; flame retardant IEC 60332-1-2

Typical Applications

• Hospitals, schools, airports, metros and stadiums
• Evacuation routes and emergency lighting circuits
• Data centers and control rooms with sensitive electronics
• Any public building under modern fire-safety codes