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ABB 2P 20A 30mA RCBO (DS301C-C20/0.03) – Residential

The ABB DS301C-C20/0.03 is a 20A 2P (1P+N) RCBO specifically engineered for residential final circuit protection. This Type AC device combines earth leakage, overload, and short-circuit protection into a single unit designed for 230V systems. It is primarily installed in domestic distribution boards to provide instantaneous protection against currents exceeding 30mA.

Quick Answer

Yes, the ABB DS301C-C20/0.03 is an excellent choice for upgrading safety in Indian residential circuits. It offers comprehensive 3-in-1 protection against earth leakage, overload, and short circuits, crucial for preventing electrical hazards and ensuring life safety. Its 30mA sensitivity and 20A rating make it ideal for protecting final circuits in homes, especially in areas prone to voltage fluctuations or where sensitive appliances are used.

✓Protects residents from direct contact shocks — 30mA sensitivity trips the circuit instantaneously.
✓6kA breaking capacity ensures the device safely interrupts high fault currents without damage.
✓Reduces heat buildup in your panel — power loss is restricted to just 1.5W per pole.
✓Energy Limiting Class 3 rating provides high-level protection for downstream cables.
✓Fits narrow residential enclosures — the compact design occupies only 1 module (18mm) width.
✓Mechanical endurance of 20,000 cycles guarantees long-term operational reliability.

The ABB DS301C-C20/0.03 is essential for Indian homeowners and electricians needing 20A, 30mA combined protection for residential final circuits, ensuring critical life safety. It's ideal for upgrading domestic safety but not suitable for industrial loads or requirements beyond 20A.

Product Overview
The ABB DS301C-C20/0.03 is a 20A 2P (1P+N) RCBO specifically engineered for residential final circuit protection. This Type AC device combines earth leakage, overload, and short-circuit protection into a single unit designed for 230V systems. It is primarily installed in domestic distribution boards to provide instantaneous protection against currents exceeding 30mA.

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Engineering Analysis
The 30mA sensitivity is critical for life safety as it ensures a trip time of ≤40ms at 5 times the rated residual current. With a 6kA breaking capacity and 10kA conditional short-circuit rating, this Italian-made device manages high-energy faults common in urban residential grids. Its 1P+N configuration is essential for modern neutral protection, ensuring the entire circuit is safely disconnected during a leakage event.

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