CY JB/OB clear PVC screened control cable, coloured

CY JB/OB clear screened control cable with colour coded cores has a bedded tinned copper wire braid screen which provides excellent protection against electrical interference.

These flexible and versatile CY JB/OB cables are used for connecting, measuring, checking and control applications.

Suitable for installation in dry and moist rooms, outdoor installation not recommended.

If protection against electrical interference is not required please see our range of YY control cables, If protection against mechanical damage is required please see our range of SY armoured control . 


Construction – CY JB/OB clear
stranded plain copper conductors
polyvinylchloride (PVC) core insulation
grey PVC bedding
tinned copper wire braid screen
clear oil resistant PVC outer sheath


Technical – CY JB/OB clear
conductor make-up: class 5 (flexible fine stranded), see Stranding/Resistance page
bend radius: 6 x overall diameter (O/D) fixed, 20 x O/D flexing
voltage rating: 300/500V operating, 2000V test
current rating: as per YY, CY or SY style cables chart, see Current Ratings page
temperature range: -15°C to +80°C flexible, -40°C to +80°C static
max. +70°C flexibleat conductor
construction: generally according to BS6500 & VDE0250
flame retardant: according to IEC 60332-1
oil resistant: according to EN 50525-2-51
core identification: OB, usually 2 core = coloured to VDE 0293 without earth (green/yellow)
  JB, 3-5 cores = coloured to VDE0293 with earth (inc. in core count)
JB, 6+ cores = coloured to JB Chart with earth (inc. in core count)
– see Colour Codes page


A printable PDF specification is available here: CY JB/OB clear PVC screened control cable, coloured cores.


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

Low smoke zero halogen sheathed (number coded, unbedded, outer grey): CY LSZH

Smaller conductor sizes (cores coloured to Din47100, unbedded, outer grey): LIYCY

Highly flexible version (number coded, unbedded, outer grey): EF CY

Polyurethane sheathed (number coded, unbedded, outer grey): PUR CY


For alternative constructions (colours, braiding, etc.) return to the PVC 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.