Use a Legrand DX3 C curve SP MCB of 6 or 10 A for lights on 1.5 sq mm wire and 16 A for sockets on 2.5 sq mm, a DP 20 or 25 A for geysers and 1.5-ton ACs on 4.0 sq mm, a DP 32 A for 2-ton ACs on 6.0 sq mm, a D curve for pumps, and a DP 40 or 63 A incomer with a 30 mA RCCB.
Circuit by circuit
| Circuit | Finolex wire | Legrand DX3 MCB | MCB MRP | Mount Cable price |
|---|---|---|---|---|
| Lighting and fans | 1.5 sq mm | SP 6 or 10 A, C curve | ₹494 | ₹173 |
| 6A and 16A sockets | 2.5 sq mm | SP 16 A, C curve | ₹494 | ₹173 |
| Geyser | 4.0 sq mm | DP 20 A, C curve | ₹1,693 | ₹593 |
| 1.5-ton AC | 4.0 sq mm | DP 20 or 25 A, C curve | ₹1,693 | ₹593 |
| 2-ton AC | 6.0 sq mm | DP 32 A, C curve | ₹1,693 | ₹593 |
| Borewell or sump pump | Submersible / 2.5 to 4.0 sq mm | DP, D curve, rated to the motor | ₹1,754 | ₹614 |
| Main incomer, single phase | 6.0 to 10 sq mm | DP 40 or 63 A + 30 mA RCCB | ₹2,663 | ₹932 |
MCB prices are Legrand MRP inclusive of GST (Corp MPL 2026) and Mount Cable India's price at 65% off. Final ratings depend on the appliance and run length; send us the load list to confirm.
Do not skip the RCCB
The MCB protects the wire from overload and short circuit. Only an RCCB protects a person from shock. Every home needs a 30 mA RCCB on the incomer, or RCBOs on wet-area circuits. Prices are on the Legrand RCCB price list.
Every Legrand MCB price list
All Legrand MCBs · DP MCB · 4 pole and TPN · D curve · Distribution boards. Check any circuit with the MCB selector.
Talk to us before you buy
Not sure yet? WhatsApp your electrician's list or a photo of the memo to 88676 76700. Mount Cable India replies within 60 minutes with the right grade and brand for each point and an itemised price. No obligation to buy from us.