SY LSZH NR armoured black control cable

SY LSZH NR armoured black control cable is designed for connecting, measuring, checking and control applications where there is a need for armouring. The galvanised steel wire braid (GSWB) provides protection against mechanical damage.

Suitable for use in internal, external or ducted installations, not recommended for immersion in water. 

These SY LSZH cables ensure increased safety in the case of fire due to the virtual elimination of toxic fumes if burnt. Pronounced advantages when compared to PVC cabling: low fire load, low smoke emission, reduced fire propagation.

Note: low smoke zero halogen / halogen free (LSZH, LSOH, LSHF, OHLS) should not be confused with LSF (low smoke and fume), an in-depth explanation is shown on our Customer Support page.


Construction – SY LSZH NR
stranded plain copper conductors
halogen free core insulation
cores twisted into layers
low smoke zero halogen bedding
galvanised steel wire braid (GSWB) armour
black low smoke zero halogen (LSZH) sheath


Technical –  SY LSZH NR
conductor make-up: class 5 (flexible fine stranded), see Stranding/Resistance page
bend radius: 10 x overall diameter (O/D) fixed, 20 x O/D flexing
voltage rating: 300/500V operating, 3000V test
current rating: as per YY, CY or SY style cables chart, see Current Ratings page
temperature range: -25°C to +70°C flexible, -40°C to +70°C static
construction: generally according to BS6500 & VDE0250
smoke emission: according to EN 50268-2
flame retardant: according to EN 50265-2-1, IEC 60332-1
acid gas emission: according to EN 50267-2-1, EN 50267-2-3
core identification: numbered black cores with earth (included in core count)


A printable PDF specification is available here: SY LSZH NR armoured black control cable.


Similar cables can be found elsewhere on our site as listed below.

Standard version with polyvinylchloride (PVC) sheath: SY NR-OZ


For armoured or unbraided versions return to the LSZH Control Flex front page.


All measurements should be considered nominal and images for illustration purposes only. Although Central Cables Ltd has made every reasonable effort to ensure its accuracy, the information contained herein is subject to error or omission and to change without notice. In no event will Central Cables Ltd be liable for any damages whatsoever, arising in connection with the information described.