Type C1 and C2 cables provide signalling tails between equipment and railway location wiring. Both use 2.5 mm² class 5 tinned copper conductors with GP4 EPR insulation and an RS2 HDPCP outer sheath. C1 is the single-core version; C2 groups several cores within one sheath. The flexible conductor construction assists routing and termination at equipment, with bend limits still applying during installation.
NR/PS/SIG/00005(formerly RT/E/PS/00005)
Electrical Characteristics at 20℃Conductors: Tinned stranded copper, class 5 according to IEC 60228 & BS 6360.
Insulation: EPR Type GP4 to BS 7655.
Core Wrapping: Plastic tape(s) with overlapping.
Sheath: HDPCP Type RS2 to BS 7655.
| Nominal Conductor Cross Section | mm | 2.5 |
| Maximum DC Conductor Resistance | Ω/km | 8.21 |
| Voltage Rating | KV | 0.65/1.1 |
| Nominal Insulation Thickness | mm | 1.05 |
Minimum Bending Radius: 6×OD (static); 15×OD (dynamic)
Temperature Range: -25℃ to +85℃ (during operation); -10℃ to +85℃ (during installation)
| Cable Code | No. of cores& Nominal Conductor Cross Sectional Area No.×mm | No. & Nominal Diameter of Strands No/mm | Nominal Sheath Thickness mm | Overall Diameter Min/Max mm | Nominal Weight kg/km |
|---|---|---|---|---|---|
| Type C1 | |||||
| BRAIL C1-3G5G-1G2.5 | 1×2.5 | 50/0.25 | 3.8 | 11.2/14.0 | 195 |
| Type C2 | |||||
| BRAIL C2-3G5G-2G2.5 | 2×2.5 | 50/0.25 | 3.8 | 14.9/18.8 | 370 |
| BRAIL C2-3G5G-4G2.5 | 4×2.5 | 50/0.25 | 3.8 | 16.4/20.9 | 460 |
| BRAIL C2-3G5G-7G2.5 | 7×2.5 | 50/0.25 | 3.8 | 18.7/23.7 | 610 |
| BRAIL C2-3G5G-10G2.5 | 10×2.5 | 50/0.25 | 3.8 | 22.5/28.6 | 920 |
| BRAIL C2-3G5G-12G2.5 | 12×2.5 | 50/0.25 | 3.8 | 23.2/29.3 | 950 |
| BRAIL C2-3G5G-16G2.5 | 16×2.5 | 50/0.25 | 3.8 | 25.3/32.0 | 1180 |
Routine test voltage: 2.5kV for 5 minutes
2.5 mm² class 5 conductors, with a listed strand construction of 50/0.25 mm.
Single-core C1 and C2 arrangements from 2 to 16 cores in the dimension table.
EPR insulation and HDPCP sheath, with a listed 0.65/1.1 kV voltage rating.
Match the core count to the equipment wiring diagram and select terminals suitable for fine-stranded conductors. Allow the listed 15 times overall-diameter radius while handling the cable and 6 times in its final static position. State any repeated movement, vibration or special environmental duty as a separate application requirement.
Type C3 Screened Railway Signalling Cable for TPWS Connections
Type B1 & B2 Railway Signalling Cable, EPR Insulation and HDPCP Sheath
What is the conductor size?
The C1 and C2 constructions on this page use 2.5 mm² conductors.
How do C1 and C2 differ?
C1 has one insulated conductor inside the sheath. C2 uses the multicore arrangements listed in the table.
Does class 5 mean continuous-flex service?
Class 5 identifies a flexible conductor construction. Repeated-motion service also requires a cable design and testing appropriate to that duty.
Is a screen included?
C1 and C2 are listed without a metallic screen. The related Type C3 construction adds an aluminium tape screen and drain wire.
What should be supplied for a quotation?
Provide the type, core count, route length, terminal arrangement and any project-specific acceptance or environmental requirements.
