S4 or S4/S8 BFOU(c) 250V Applications
These cables are fire resistant, flame retardant, low smoke, halogen free and mud resistant, used for instrumentation, communication, control and alarm systems.
S4 or S4/S8 BFOU(c) 250V Standards
IEC 60092-376 | IEC 60092-351 |
IEC 60092-359 | IEC 60332-1 |
IEC 60332-3-22 | IEC 60754-1,2 |
IEC 61034-1,2 | NEK 606:2004 |
IEC 60331-21 |
S4 or S4/S8 BFOU(c) 250V Construction
- Conductors : Circular tinned annealed stranded copper wire to IEC 60228 class 2.
- Insulation : Mica tape + Halogen free EPR compound.
- Twinning : Colour coded cores twisted together.
- Collective Shielding : Pairs/triples are layed up and collectively screened by copper backed polyester tape in contact with a stranded tinned copper drain wire. Pairs/triples are numbered with numbered tape or by numbers printed directly on the insulated conductors.
- Bedding : Halogen free compound.
- Armour : Tinned copper wire braid.
- Outer Sheath : Halogen free thermosetting compound, SHF2 (for TYPE S4). Halogen free MUD resistant thermosetting compound, SHF MUD (for TYPE S4/S8), coloured grey (blue for intrinsically safe).
S4 or S4/S8 BFOU(c) 250V Electrical Characteristics
Nominal Cross Section Area | mm² | 0.75 | 1.0 | 1.5 | 2.5 |
Nominal Conductor Diameter | mm | 1.1 | 1.3 | 1.6 | 2.0 |
Maximum Resistant@20℃ | Ω/km | 26.3 | 19.3 | 12.9 | 8.02 |
Mutual Capacitance | nF/km | 75 | 80 | 85 | 95 |
Nominal Inductance@1KHz | MH/km | 0.727 | 0.686 | 0.667 | 0.623 |
Maximum L/R@1KHz | μH/Ω | 20 | 25 | 35 | 55 |
Operating Voltage | V | 250 | 250 | 250 | 250 |
Mechanical and Thermal Properties
- Bending Radius : 8×OD (during installation); 6×OD (fixed installed).
- Temperature Range : -20℃ ~ +90℃.
S4 or S4/S8 BFOU(c) 250V Dimensions and Weight
Construction No. of elements×No. of cores in element×Cross section (mm²) | Nominal Insulation Thickness mm | Nominal Sheath Thickness mm | Nominal Overall Diameter mm | Nominal Weight kg/km | |
Inner | Outer | ||||
1×2×0.75 | 0.6 | 1.1 | 1.2 | 12.1 | 230 |
2×2×0.75 | 0.6 | 1.1 | 1.3 | 16.4 | 340 |
3×2×0.75 | 0.6 | 1.1 | 1.4 | 17.2 | 495 |
4×2×0.75 | 0.6 | 1.1 | 1.4 | 18.2 | 555 |
5×2×0.75 | 0.6 | 1.1 | 1.5 | 19.8 | 640 |
6×2×0.75 | 0.6 | 1.1 | 1.5 | 21.2 | 725 |
7×2×0.75 | 0.6 | 1.1 | 1.5 | 21.2 | 740 |
8×2×0.75 | 0.6 | 1.1 | 1.6 | 23.1 | 805 |
9×2×0.75 | 0.6 | 1.1 | 1.6 | 24.3 | 880 |
10×2×0.75 | 0.6 | 1.1 | 1.7 | 25.6 | 900 |
12×2×0.75 | 0.6 | 1.1 | 1.7 | 26.2 | 950 |
14×2×0.75 | 0.6 | 1.1 | 1.7 | 27.3 | 1035 |
15×2×0.75 | 0.6 | 1.1 | 1.8 | 29.2 | 1130 |
16×2×0.75 | 0.6 | 1.1 | 1.8 | 29.7 | 1175 |
18×2×0.75 | 0.6 | 1.1 | 1.9 | 31.3 | 1275 |
19×2×0.75 | 0.6 | 1.1 | 1.9 | 31.6 | 1315 |
20×2×0.75 | 0.6 | 1.2 | 2.0 | 33.3 | 1475 |
21×2×0.75 | 0.6 | 1.2 | 2.0 | 34.1 | 1530 |
23×2×0.75 | 0.6 | 1.2 | 2.0 | 34.6 | 1635 |
24×2×0.75 | 0.6 | 1.2 | 2.1 | 36.8 | 1730 |
27×2×0.75 | 0.6 | 1.2 | 2.1 | 37.5 | 1850 |
30×2×0.75 | 0.6 | 1.2 | 2.2 | 38.9 | 1965 |
33×2×0.75 | 0.6 | 1.2 | 2.2 | 40.3 | 2155 |
37×2×0.75 | 0.6 | 1.2 | 2.3 | 41.7 | 2325 |
1×3×0.75 | 0.6 | 1.1 | 1.2 | 12.6 | 255 |
2×3×0.75 | 0.6 | 1.1 | 1.4 | 17.7 | 545 |
3×3×0.75 | 0.6 | 1.1 | 1.4 | 18.3 | 585 |
4×3×0.75 | 0.6 | 1.1 | 1.5 | 19.7 | 670 |
5×3×0.75 | 0.6 | 1.1 | 1.5 | 21.2 | 770 |
6×3×0.75 | 0.6 | 1.1 | 1.6 | 23.5 | 900 |
7×3×0.75 | 0.6 | 1.1 | 1.6 | 23.5 | 935 |
8×3×0.75 | 0.6 | 1.1 | 1.7 | 25.2 | 1015 |
9×3×0.75 | 0.6 | 1.1 | 1.7 | 26.7 | 1135 |
10×3×0.75 | 0.6 | 1.1 | 1.8 | 28.7 | 1140 |
12×3×0.75 | 0.6 | 1.1 | 1.8 | 29.6 | 1230 |
14×3×0.75 | 0.6 | 1.1 | 1.9 | 31.0 | 1375 |
15×3×0.75 | 0.6 | 1.1 | 1.9 | 31.9 | 1455 |
16×3×0.75 | 0.6 | 1.2 | 2.0 | 33.3 | 1545 |
18×3×0.75 | 0.6 | 1.2 | 2.0 | 34.8 | 1690 |
19×3×0.75 | 0.6 | 1.2 | 2.0 | 35.1 | 1750 |
20×3×0.75 | 0.6 | 1.2 | 2.1 | 36.6 | 1985 |
21×3×0.75 | 0.6 | 1.2 | 2.1 | 37.3 | 2055 |
23×3×0.75 | 0.6 | 1.2 | 2.2 | 38.8 | 2215 |
24×3×0.75 | 0.6 | 1.2 | 2.2 | 39.5 | 2245 |
27×3×0.75 | 0.6 | 1.2 | 2.3 | 41.5 | 2435 |
30×3×0.75 | 0.6 | 1.2 | 2.3 | 43.3 | 2645 |
32×3×0.75 | 0.6 | 1.4 | 2.4 | 44.9 | 2840 |
1×2×1.0 | 0.6 | 1.1 | 1.2 | 12.5 | 245 |
2×2×1.0 | 0.6 | 1.1 | 1.4 | 17.2 | 375 |
3×2×1.0 | 0.6 | 1.1 | 1.4 | 17.9 | 550 |
4×2×1.0 | 0.6 | 1.1 | 1.4 | 19.0 | 615 |
5×2×1.0 | 0.6 | 1.1 | 1.5 | 20.6 | 710 |
6×2×1.0 | 0.6 | 1.1 | 1.6 | 22.4 | 820 |
7×2×1.0 | 0.6 | 1.1 | 1.6 | 22.4 | 845 |
8×2×1.0 | 0.6 | 1.1 | 1.6 | 24.1 | 905 |
9×2×1.0 | 0.6 | 1.1 | 1.7 | 25.7 | 995 |
10×2×1.0 | 0.6 | 1.1 | 1.7 | 26.8 | 1035 |
12×2×1.0 | 0.6 | 1.1 | 1.7 | 27.4 | 1095 |
14×2×1.0 | 0.6 | 1.1 | 1.8 | 28.9 | 1195 |
15×2×1.0 | 0.6 | 1.1 | 1.9 | 30.9 | 1305 |
16×2×1.0 | 0.6 | 1.1 | 1.9 | 31.4 | 1355 |
18×2×1.0 | 0.6 | 1.2 | 2.0 | 33.4 | 1500 |
19×2×1.0 | 0.6 | 1.2 | 2.0 | 33.7 | 1550 |
20×2×1.0 | 0.6 | 1.2 | 2.0 | 35.0 | 1685 |
21×2×1.0 | 0.6 | 1.2 | 2.1 | 36.5 | 1850 |
23×2×1.0 | 0.6 | 1.2 | 2.1 | 37.0 | 1975 |
24×2×1.0 | 0.6 | 1.2 | 2.2 | 38.9 | 1990 |
27×2×1.0 | 0.6 | 1.2 | 2.2 | 39.6 | 2135 |
30×2×1.0 | 0.6 | 1.2 | 2.2 | 40.9 | 2300 |
33×2×1.0 | 0.6 | 1.2 | 2.3 | 42.5 | 2495 |
37×2×1.0 | 0.6 | 1.4 | 2.4 | 44.3 | 2735 |
1×3×1.0 | 0.6 | 1.1 | 1.2 | 13.0 | 280 |
2×3×1.0 | 0.6 | 1.1 | 1.4 | 18.0 | 550 |
3×3×1.0 | 0.6 | 1.1 | 1.4 | 18.7 | 600 |
4×3×1.0 | 0.6 | 1.1 | 1.5 | 20.0 | 690 |
5×3×1.0 | 0.6 | 1.1 | 1.6 | 22.4 | 880 |
6×3×1.0 | 0.6 | 1.1 | 1.6 | 24.6 | 1020 |
7×3×1.0 | 0.6 | 1.1 | 1.6 | 24.6 | 1060 |
8×3×1.0 | 0.6 | 1.1 | 1.7 | 26.4 | 1150 |
9×3×1.0 | 0.6 | 1.1 | 1.8 | 28.2 | 1305 |
10×3×1.0 | 0.6 | 1.1 | 1.8 | 30.2 | 1290 |
12×3×1.0 | 0.6 | 1.1 | 1.9 | 31.3 | 1435 |
14×3×1.0 | 0.6 | 1.2 | 1.9 | 32.9 | 1605 |
15×3×1.0 | 0.6 | 1.2 | 2.0 | 34.0 | 1720 |
16×3×1.0 | 0.6 | 1.2 | 2.0 | 35.0 | 1765 |
18×3×1.0 | 0.6 | 1.2 | 2.1 | 37.2 | 2050 |
19×3×1.0 | 0.6 | 1.2 | 2.1 | 37.5 | 2120 |
20×3×1.0 | 0.6 | 1.2 | 2.2 | 38.7 | 2300 |
21×3×1.0 | 0.6 | 1.2 | 2.2 | 39.4 | 2380 |
23×3×1.0 | 0.6 | 1.2 | 2.2 | 40.8 | 2515 |
24×3×1.0 | 0.6 | 1.2 | 2.3 | 41.7 | 2575 |
27×3×1.0 | 0.6 | 1.2 | 2.3 | 43.7 | 2815 |
30×3×1.0 | 0.6 | 1.4 | 2.4 | 46.1 | 3125 |
32×3×1.0 | 0.6 | 1.4 | 2.5 | 47.5 | 3310 |
1×2×1.5 | 0.7 | 1.1 | 1.3 | 14.3 | 335 |
2×2×1.5 | 0.7 | 1.1 | 1.5 | 20.5 | 740 |
3×2×1.5 | 0.7 | 1.1 | 1.5 | 21.2 | 805 |
4×2×1.5 | 0.7 | 1.1 | 1.6 | 22.9 | 945 |
5×2×1.5 | 0.7 | 1.1 | 1.6 | 24.8 | 1095 |
6×2×1.5 | 0.7 | 1.1 | 1.8 | 27.8 | 1300 |
7×2×1.5 | 0.7 | 1.1 | 1.8 | 27.8 | 1355 |
8×2×1.5 | 0.7 | 1.1 | 1.8 | 29.6 | 1455 |
9×2×1.5 | 0.7 | 1.1 | 1.9 | 31.7 | 1660 |
10×2×1.5 | 0.7 | 1.1 | 2.0 | 34.4 | 1680 |
12×2×1.5 | 0.7 | 1.1 | 2.0 | 35.5 | 1855 |
14×2×1.5 | 0.7 | 1.2 | 2.1 | 37.6 | 2150 |
15×2×1.5 | 0.7 | 1.2 | 2.2 | 38.9 | 2300 |
16×2×1.5 | 0.7 | 1.2 | 2.2 | 40.0 | 2415 |
18×2×1.5 | 0.7 | 1.2 | 2.3 | 42.0 | 2630 |
19×2×1.5 | 0.7 | 1.2 | 2.3 | 42.4 | 2725 |
20×2×1.5 | 0.7 | 1.2 | 2.3 | 43.5 | 2940 |
21×2×1.5 | 0.7 | 1.2 | 2.4 | 44.9 | 3110 |
23×2×1.5 | 0.7 | 1.2 | 2.5 | 46.7 | 3400 |
24×2×1.5 | 0.7 | 1.2 | 2.5 | 47.5 | 3360 |
27×2×1.5 | 0.7 | 1.4 | 2.6 | 50.0 | 3710 |
30×2×1.5 | 0.7 | 1.4 | 2.7 | 52.3 | 4060 |
32×2×1.5 | 0.7 | 1.4 | 2.7 | 53.8 | 4285 |
33×2×1.5 | 0.7 | 1.4 | 2.5 | 48.5 | 3245 |
37×2×1.5 | 0.7 | 1.4 | 2.6 | 50.2 | 3515 |
1×3×1.5 | 0.7 | 1.1 | 1.3 | 14.3 | 335 |
2×3×1.5 | 0.7 | 1.1 | 1.5 | 20.5 | 740 |
3×3×1.5 | 0.7 | 1.1 | 1.5 | 21.2 | 805 |
4×3×1.5 | 0.7 | 1.1 | 1.6 | 22.9 | 945 |
5×3×1.5 | 0.7 | 1.1 | 1.6 | 24.8 | 1095 |
6×3×1.5 | 0.7 | 1.1 | 1.8 | 27.8 | 1300 |
7×3×1.5 | 0.7 | 1.1 | 1.8 | 27.8 | 1355 |
8×3×1.5 | 0.7 | 1.1 | 1.8 | 29.6 | 1455 |
9×3×1.5 | 0.7 | 1.1 | 1.9 | 31.7 | 1660 |
10×3×1.5 | 0.7 | 1.2 | 2.0 | 34.4 | 1680 |
12×3×1.5 | 0.7 | 1.2 | 2.0 | 35.5 | 1855 |
14×3×1.5 | 0.7 | 1.2 | 2.1 | 37.6 | 2150 |
15×3×1.5 | 0.7 | 1.2 | 2.2 | 38.9 | 2300 |
16×3×1.5 | 0.7 | 1.2 | 2.2 | 40.0 | 2405 |
18×3×1.5 | 0.7 | 1.2 | 2.3 | 42.0 | 2630 |
19×3×1.5 | 0.7 | 1.2 | 2.3 | 42.4 | 2710 |
20×3×1.5 | 0.7 | 1.2 | 2.3 | 43.5 | 2940 |
21×3×1.5 | 0.7 | 1.4 | 2.4 | 44.9 | 3110 |
23×3×1.5 | 0.7 | 1.4 | 2.5 | 46.7 | 3400 |
24×3×1.5 | 0.7 | 1.4 | 2.5 | 47.5 | 3430 |
27×3×1.5 | 0.7 | 1.4 | 2.6 | 50.0 | 3710 |
30×3×1.5 | 0.7 | 1.4 | 2.7 | 52.3 | 4060 |
32×3×1.5 | 0.7 | 1.4 | 2.7 | 53.8 | 4285 |
1×2×2.5 | 0.7 | 1.1 | 1.3 | 14.5 | 335 |
2×2×2.5 | 0.7 | 1.1 | 1.5 | 20.4 | 740 |
3×2×2.5 | 0.7 | 1.1 | 1.5 | 21.3 | 800 |
4×2×2.5 | 0.7 | 1.1 | 1.6 | 22.8 | 930 |
5×2×2.5 | 0.7 | 1.1 | 1.6 | 24.7 | 1075 |
6×2×2.5 | 0.7 | 1.1 | 1.7 | 26.9 | 1245 |
7×2×2.5 | 0.7 | 1.1 | 1.7 | 26.9 | 1290 |
8×2×2.5 | 0.7 | 1.1 | 1.8 | 29.3 | 1405 |
9×2×2.5 | 0.7 | 1.1 | 1.9 | 31.3 | 1585 |
10×2×2.5 | 0.7 | 1.2 | 2.0 | 33.2 | 1605 |
12×2×2.5 | 0.7 | 1.2 | 2.0 | 34.0 | 1745 |
14×2×2.5 | 0.7 | 1.2 | 2.0 | 35.6 | 1920 |
15×2×2.5 | 0.7 | 1.2 | 2.2 | 38.8 | 2205 |
16×2×2.5 | 0.7 | 1.2 | 2.2 | 39.4 | 2230 |
18×2×2.5 | 0.7 | 1.2 | 2.3 | 41.5 | 2500 |
19×2×2.5 | 0.7 | 1.2 | 2.3 | 41.9 | 2590 |
20×2×2.5 | 0.7 | 1.2 | 2.3 | 43.5 | 2815 |
21×2×2.5 | 0.7 | 1.4 | 2.4 | 45.2 | 2990 |
23×2×2.5 | 0.7 | 1.4 | 2.4 | 45.8 | 3215 |
24×2×2.5 | 0.7 | 1.4 | 2.5 | 48.2 | 3270 |
27×2×2.5 | 0.7 | 1.4 | 2.6 | 49.4 | 3515 |
30×2×2.5 | 0.7 | 1.4 | 2.6 | 51.0 | 3810 |
33×2×2.5 | 0.7 | 1.4 | 2.7 | 53.1 | 4145 |
37×2×2.5 | 0.7 | 1.4 | 2.8 | 54.9 | 4500 |
1×3×2.5 | 0.7 | 1.1 | 1.3 | 15.1 | 385 |
2×3×2.5 | 0.7 | 1.1 | 1.5 | 22.0 | 880 |
3×3×2.5 | 0.7 | 1.1 | 1.6 | 23.0 | 990 |
4×3×2.5 | 0.7 | 1.1 | 1.6 | 24.6 | 1150 |
5×3×2.5 | 0.7 | 1.1 | 1.7 | 26.9 | 1350 |
6×3×2.5 | 0.7 | 1.1 | 1.8 | 30.0 | 1595 |
7×3×2.5 | 0.7 | 1.1 | 1.8 | 30.0 | 1670 |
8×3×2.5 | 0.7 | 1.1 | 1.9 | 32.2 | 1820 |
9×3×2.5 | 0.7 | 1.2 | 2.0 | 34.8 | 2105 |
10×3×2.5 | 0.7 | 1.2 | 2.1 | 37.9 | 2190 |
12×3×2.5 | 0.7 | 1.2 | 2.2 | 39.2 | 2455 |
14×3×2.5 | 0.7 | 1.2 | 2.2 | 40.9 | 2715 |
15×3×2.5 | 0.7 | 1.2 | 2.3 | 42.3 | 2905 |
16×3×2.5 | 0.7 | 1.2 | 2.3 | 43.5 | 3060 |
18×3×2.5 | 0.7 | 1.4 | 2.4 | 46.1 | 3380 |
19×3×2.5 | 0.7 | 1.4 | 2.5 | 46.7 | 3530 |
20×3×2.5 | 0.7 | 1.4 | 2.5 | 47.9 | 3800 |
21×3×2.5 | 0.7 | 1.4 | 2.5 | 48.9 | 3950 |
23×3×2.5 | 0.7 | 1.4 | 2.6 | 50.9 | 4290 |
24×3×2.5 | 0.7 | 1.4 | 2.6 | 51.8 | 4325 |
27×3×2.5 | 0.7 | 1.4 | 2.7 | 54.5 | 4745 |
30×3×2.5 | 0.7 | 1.6 | 2.9 | 57.7 | 5300 |
32×3×2.5 | 0.7 | 1.6 | 2.9 | 59.3 | 5595 |
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