ABBDS301C
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RESIDUAL CURRENT CIRCUIT BREAKER WITH OVERCURRENT PROTECTION
DS301C B20 AC30
SKU 2CSR255063R1205ABB DS301C B20 AC30: Residual current circuit breaker with overcurrent protection. Rated current: 20 A. Pole configuration: 1P+N. Rated residual operating current: 30 mA. Tripping characteristic: B.
20 ARated current
1P+NPoles
30 mAResidual sensitivity
PRODUCT DATA
Technical specifications
Source: ABB English regional product catalog.
Verified September 08, 2026.
| Product ID | 2CSR255063R1205 |
|---|---|
| Catalog Description | Residual Current Circuit Breaker with Overcurrent Protection DS301C - 1P+N - 30 mA - 20 A - B - Type AC - Instantaneous |
| Type of Residual Current | Type AC |
| Rated Current (In) | 20 A |
| Number of Poles | 1P+N |
| Number of Protected Poles | 1 |
| Tripping Characteristic | B |
| Rated Residual Current | 30 mA |
| Operating Characteristic | Instantaneous |
| Input Voltage Type | AC |
| Rated Operational Voltage | acc. to IEC 60898-1 230 / 240 V AC |
| Rated Short-Circuit Capacity | 6 kA |
| Rated Ultimate Short-Circuit Breaking Capacity (Icu) | 6 kA |
| Rated Service Short-Circuit Breaking Capacity (Ics) | 6 kA |
| Rated Insulation Voltage (Ui) | acc. to IEC/EN 60664-1 500 V |
| Rated Impulse Withstand Voltage (Uimp) | 4 kV |
| Rated Frequency (f) | 50 Hz |
| Standards | IEC/EN 61009-1 IEC/EN 61009-2-1 |
| Electrical Endurance | 7000 cycle |
| Mechanical Endurance | 7000 cycle |
| Power Loss | Average per Pole 1.83 W Phase Pole 2.88 W Neutral Pole 0.78 W Total 3.66 W |
| Degree of Protection | IP20 IP40 |
| Pollution Degree | 2 |
| Ambient Air Temperature | Operation -25 … 55 °C |
| Terminal Type | Screw Terminals |
| Connecting Capacity | Screw Clamp / Rigid 1 … 10 mm² Screw Clamp / With Insulated Ferrule 1 … 6 mm² Screw Clamp / Without Insulated Ferrule 1 … 6 mm² Screw Clamp / Flexible 1 … 10 mm² |
| Tightening Torque | 1.2 N·m |
| Rated Cross-Section | 1 - Solid-Core 1 … 10 mm² 4 - Multi-Wired 1 … 6 mm² |
| Number of Modular Spacings per DIN Rail | 1 |
| Product Net Width | 17.6 mm |
| Product Net Height | 92 mm |
| Product Net Depth / Length | 68 mm |
| Product Net Weight | 110 g |
For complete electrical ratings, applicable standards, connection requirements and installation instructions, consult the official ABB reference ↗.
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