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NX200+ Cable

BS 5839-1 : 2002 Cat. Standard. 300 / 500 V.  A fire resistant, fire retardant and low smoke cable for use in buildings where systems need to remain operational.

Max conductor temperature 70oC

Types Approval
  • BASEC
  • LPCB

Application :

  • Fire detection and fire alarm systems for buildings
  • Public address systems
  • Emergency lighting

Design :

  1. Conductor :  Bare copper, Solid Class 1 (1, 1.5mm2), Stranded Class 2 (2.5 mm2) according to BS 6360 / IEC 60228
  2. Insulation : Silicon rubber to BS 7655
  3. Un-insulated protective conductor : Tinned copper according to BS6360 : same class and cross sectional area as insulated conductor.
  4. Screen : Aluminium / polyester tape with optional polyester tape
  5. Outer sheath : Halogen free polyolefin. colour : red
   Alsecure NX 200

Marking :
ALSECURE NX 200 - n x s
300 / 500 V - BASEC - LPCB - BS 7629-1 - BS 6387 CWZ - BS 8434-2 - NEXANS - week / year

Core identification :
2 cores : brown - blue
3 cores : brown - black - grey
4 cores : brown - black - grey - blue

Standards :
BS 7629 Part 1
BS 5839-1 : 2002 Cat. Enhanced

Electrical characteristics
Rated Voltage Uo/U 300 / 500 V

Usage characteristics
Fire resistant BS 6387 CWZ, BS 8434-2 : 2003; BS EN 50200 PH 120
Flame retardant BS EN 50265 1 & 2.1; IEC 60332 Part 1
Low smoke BS EN 50268; IEC 61034
Halogen free : BS EN 50267, IEC 60754
Low toxicity : BS EN 50267; IEC 60754
Low corrosivity : BS EN 50267; IEC 60754
Temperature : -20 + 60oC

Cables (mm2) Outer diameter (approx) Current rating (A) Voltage drop (V/A x km) Weight approx
(kg / km)
Min. (mm) Max. (mm) AC/DC 2 cores loaded AC 3 cores loaded
2 x 1 6.9 8.2 15.0 44.0   87
2 x 1.5 7.3 8.7 19.5 29.0   103
2 x 2.5 9.2 10.8 27.0 18.0   164
3 x 1 7.3 9.6 13.5   38.0 102
3 x 1.5 7.8 10.0 17.5   25.0 123
3 x 2.5 9.8 12.7 24.0   15.0 198
4 x 1 8.2 10.6 13.5   38.0 125
4 x 1.5 8.7 11.2 17.5   25.0 151
4 x 2.5 10.9 14.1 24.0   15.0 242

These current and voltage drops data are indicated for continuous duty operation

They are as defined in BS 7671 : 2001

table 4D2A and apply to

On cable in air, clipped direct at ambient temperature = 30 oC

Voltage drop

The data is based on Cos j  = 1

For other laying conditions, refer to BS 7671 : 2001 standard