H03S-K Cable

The H03S-K is a range of single core copper conductor cables (bare copper as standard but tinned copper upon request) insulated with silicone rubber. It is specified for applications operating at higher temperatures of up to 180oC; it also supports low temperature applications, down to a low of -60oC. Silicone rubber is a fire retardant LSZH material so the cable is suitable for installation in environments where protection to life and sensitive equipment in the event of a fire is paramount.

The H03S-K is manufactured in accordance with EN 50525-2-41, a harmonised European standard for single core cross-linked silicone low voltage cables for internal applications in high temperature zones. Other cables meeting this standard would include the H05S-K and H03SS-K. The H03S-K is available in cross-sectional conductor sizes from 0.5mm2 to 2.5mm2 as standard, and in the full range of insulation colours. Eland Cables' part numbers have the two letter insulation colour code designation added to them to identify them.

The Silicone insulation provides for flexibility alongside the fine stranded Class 5 conductor, as reflected in the 5x overall diameter minimum bending radius, yet the properties of silicone means it is missing the robustness of other insulation materials. Where additional protection is required, cables such as the SIAF-GL with its fibre glass braid sheath may be more appropriate. For support with high temperature applications and accompanying cables, please contact us for more information.


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Construction Table

  H03S K Cross Section H03S-K Cable



Class 5 fine stranded flexible Copper (bare or tinned)


Si (Silicone Rubber)

H03S-K Cable

1 product(s)


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Product name Part No Cores Nominal cross-sectional area (mm²) Sheath colour Length (m)  
H03S-K Cable B3I0100005BK 1 0.5 Black
H03S-K Cable B3I0100075BK 1 0.75 Black
H03S-K Cable B3I010010BK 1 1 Black
H03S-K Cable B3I010015BK 1 1.5 Black
H03S-K Cable B3I010025BK 1 2.5 Black
H03S-K Cable B3I0100005BL 1 0.5 Blue
H03S-K Cable B3I0100075BL 1 0.75 Blue
H03S-K Cable B3I010010BL 1 1 Blue
H03S-K Cable B3I010015BL 1 1.5 Blue
H03S-K Cable B3I010025BL 1 2.5 Blue
H03S-K Cable B3I0100005PK 1 0.5 Pink
H03S-K Cable B3I0100075PK 1 0.75 Pink
H03S-K Cable B3I010010PK 1 1 Pink
H03S-K Cable B3I010015PK 1 1.5 Pink
H03S-K Cable B3I010025PK 1 2.5 Pink
H03S-K Cable B3I0100005BR 1 0.5 Brown
H03S-K Cable B3I0100075BR 1 0.75 Brown
H03S-K Cable B3I010010BR 1 1 Brown
H03S-K Cable B3I010015BR 1 1.5 Brown
H03S-K Cable B3I010025BR 1 2.5 Brown
H03S-K Cable B3I0100005GR 1 0.5 Grey
H03S-K Cable B3I0100075GR 1 0.75 Grey
H03S-K Cable B3I010010GR 1 1 Grey
H03S-K Cable B3I010015GR 1 1.5 Grey
H03S-K Cable B3I010025GR 1 2.5 Grey
H03S-K Cable B3I0100005OR 1 0.5 Orange
H03S-K Cable B3I0100075OR 1 0.75 Orange
H03S-K Cable B3I010010OR 1 1 Orange
H03S-K Cable B3I010015OR 1 1.5 Orange
H03S-K Cable B3I010025OR 1 2.5 Orange
H03S-K Cable B3I0100005TQ 1 0.5 Turquoise
H03S-K Cable B3I0100075TQ 1 0.75 Turquoise
H03S-K Cable B3I010010TQ 1 1 Turquoise
H03S-K Cable B3I010015TQ 1 1.5 Turquoise
H03S-K Cable B3I010025TQ 1 2.5 Turquoise
H03S-K Cable B3I0100005VI 1 0.5 Violet
H03S-K Cable B3I0100075VI 1 0.75 Violet
H03S-K Cable B3I010010VI 1 1 Violet
H03S-K Cable B3I010015VI 1 1.5 Violet
H03S-K Cable B3I010025VI 1 2.5 Violet
H03S-K Cable B3I0100005WH 1 0.5 White
H03S-K Cable B3I0100075WH 1 0.75 White
H03S-K Cable B3I010010WH 1 1 White
H03S-K Cable B3I010015WH 1 1.5 White
H03S-K Cable B3I010025WH 1 2.5 White
H03S-K Cable B3I0100005GN 1 0.5 Green
H03S-K Cable B3I0100075GN 1 0.75 Green
H03S-K Cable B3I010010GN 1 1 Green
H03S-K Cable B3I010015GN 1 1.5 Green
H03S-K Cable B3I010025GN 1 2.5 Green
H03S-K Cable B3I0100005GY 1 0.5 Green/Yellow
H03S-K Cable B3I0100075GY 1 0.75 Green/Yellow
H03S-K Cable B3I010010GY 1 1 Green/Yellow
H03S-K Cable B3I010015GY 1 1.5 Green/Yellow
H03S-K Cable B3I010025GY 1 2.5 Green/Yellow