ABB 2CSR256040R1204

DS203NC C20 AC30 Residual Current Circuit Breaker with Overcurrent Protection

The DS203NC C20 AC30 is a combined residual current circuit breaker with overcurrent protection (RCBO) from ABB’s System pro M compact range, in a compact 3P+N configuration occupying just four modules. It provides earth-leakage protection together with overcurrent and short-circuit protection in a single device for three-phase final circuits.

It is rated at 20 A with a C-trip characteristic, an AC-type residual current trip rated at 30 mA, and a 6 kA breaking capacity. The C characteristic suits general three-phase loads with moderate inrush, while the 30 mA AC-type element detects sinusoidal earth-leakage currents for personal and fire protection.

Typical applications include three-phase socket, machine and distribution circuits where both RCD and MCB protection are required with minimal panel space.

Technical Specifications

Shipping & Warranty: Fast order processing with worldwide delivery available. This item is sold as New Surplus and backed by our 12-month warranty, which covers quality-related replacement or refund. Contact our team for compatibility checks, bulk pricing, or spare-parts sourcing support.

Place your order before 14:00 for earliest possible shipment handover. With round-the-clock transit operated by our partnered global logistics providers, parcels reach most international destinations following routine customs processing. Economy shipping takes 9–14 business days, while express delivery arrives in 5–8 business days, both subject to customs clearance progress.Shipping fees will be charged for all orders under USD 500, and the exact shipping cost will be determined and collected by our logistics carriers. Shipments to remote international regions will incur additional courier surcharges to offset extra cross-border transportation costs.

Factory warranty service is not applicable to this industrial control equipment, and extended warranty packages are not provided for this item.