Heat resistant, flame retardant cable designed for use in the switch control, relay and instrumentation panels of power switchgear and for purposes such as internal connectors in rectifier equipment, motor starters and controllers. Tri-rated cable is sometimes referred to as BS 6231 cable, H07V2-K or panel wire.
Voltage Rating (Uo/U)
Temperature Rating
Minimum Bending Radius
6 x overall diameter
Conductor
Class 5 flexible copper conductor
Insulation
PVC (Polyvinyl Chloride)
Insulation Colour
Red
Black
Pink
Blue
Light Blue
Green/Yellow
Dark Blue
Yellow
Green
Orange
Brown
Grey
White
Purple
Note:- BS EN 50525-2-31 covers harmonised conductor sizes up to 35mm², cables above this size are generally to the specification. Where it is intended to connect cables contained within this datasheet to equipment or accessories confirmation should be obtained to ensure that they are capable of withstanding the operating temperature of the cable.
| Nominal cross sectional area (mm²) | Maximum diameter of wires in conductor (mm) | Nominal thickness of insulation (mm) | Nominal overall diameter (mm) | Nominal weight (kg/km) | Maximum resistance of conductor at 20°C (ohms/km) – plain wires |
|---|---|---|---|---|---|
| 0.5 | 0.21 | 0.8 | 2.7 | 39 | 1111 |
| 0.75 | 0.21 | 0.8 | 2.85 | 26 | 15 |
| 1 | 0.21 | 0.8 | 3.0 | 19.5 | 18 |
| 1.5 | 0.26 | 0.8 | 3.3 | 13.3 | 23 |
| 2.5 | 0.31 | 0.8 | 3.75 | 7.98 | 35 |
| 4 | 0.31 | 0.8 | 4.35 | 4.95 | 48 |
| 6 | 0.41 | 0.8 | 4.85 | 3.3 | 69 |
| 10 | 0.41 | 1.0 | 6.3 | 1.91 | 117 |
| 16 | 0.41 | 1.0 | 8.1 | 1.21 | 191 |
| 25 | 0.41 | 1.2 | 9.4 | 0.78 | 281 |
| 35 | 0.41 | 1.2 | 10.9 | 0.554 | 389 |
| 50 | 0.41 | 1.4 | 13.1 | 0.386 | 560 |
| 70 | 0.51 | 1.4 | 15.1 | 0.272 | 774 |
| 95 | 0.51 | 1.6 | 16.1 | 0.206 | 991 |
| 120 | 0.51 | 1.6 | 17.9 | 0.161 | 1231 |
| 150 | 0.51 | 1.8 | 20.2 | 0.129 | 1534 |
| 185 | 0.51 | 2.0 | 22.85 | 0.106 | 1878 |
| 240 | 0.51 | 2.2 | 24.4 | 0.0801 | 2381 |
Eurogrid Electricals is a manufacturer, positioned as a trusted MCB Changeover Manufacturer in India rather than a reseller.
Eurogrid's MCB changeover switches are built to IEC 60947-3, the international standard for low-voltage switchgear and switching devices.
Check for compliance with relevant IEC standards, a documented product range across amperage ratings, and manufacturing (not just trading) credentials.
Key features to look for include compact design, double-break contacts for safer isolation, DIN rail mounting for easy panel integration, and energy-efficient operation.
It transfers electrical load from the main power source to a backup source (like a generator) during an outage, ensuring uninterrupted power supply.
A manual changeover requires someone to physically switch the source, while an automatic transfer switch (ATS) detects a power failure and switches sources without human intervention.
It depends on the electrical system: 2-pole (2P) suits single-phase setups, while 4-pole (4P) is used for three-phase systems where neutral switching is also required.
Yes — MCB changeover switches are specifically designed to transfer load between mains and a backup source like a generator during outages.
It's based on the connected load's current draw and the cable's current-carrying capacity — the MCB rating should protect the cable, not just the appliance, typically matched via a load calculation rather than guesswork.
Eurogrid Industrial Corporation operates out of Ghatkopar East, Mumbai, and is contactable via phone or WhatsApp for product and pricing queries.
Eurogrid Industrial Corporation,
Unit No. 6, Sahakar Apartments,
Hingwala Cross Lane,
Ghatkopar East, Mumbai- 400077.
