ABB DS201 C20 AC30 1P+N RCBO with 20 A rated current, 30 mA Type AC residual current protection, C tripping characteristic and 6 kA breaking capacity.
£88.98
The ABB 2CSR255170R1204, also known as the DS201 C20 AC30, is a high performance residual current circuit breaker with overcurrent protection (RCBO) designed to protect single-phase electrical circuits against overloads, short circuits and earth leakage faults. Combining multiple protection functions within one compact device, it improves electrical safety while reducing installation space.
Part of the proven ABB System pro M compact DS201 series, this RCBO features a 1P+N configuration occupying only two DIN modules. It incorporates Type AC residual current protection, making it suitable for circuits where protection against sinusoidal alternating residual currents is required.
The DS201 C20 AC30 has a rated current of 20 A, a C tripping characteristic and a rated residual operating current of 30 mA. Operating from a standard 230 / 240 V AC supply, it is ideal for residential, commercial and light industrial electrical installations.
The ABB DS201 C20 AC30 continuously monitors both load current and residual current, disconnecting the supply whenever overloads, short circuits or earth leakage faults occur. This integrated protection helps protect people, wiring and connected equipment while reducing the number of protective devices required inside the distribution board.
Its compact design, simple DIN rail installation and proven ABB reliability make it an excellent choice for new installations and electrical upgrades requiring dependable combined protection.
| Current | 20 A |
|---|---|
| Phase | Single Phase |
| Manufacturer | ABB |
| Series | DS201 |
| Model | DS201 C20 AC30 |
| Product ID | 2CSR255170R1204 |
| Product type | Residual current circuit breaker with overcurrent protection (RCBO) |
| Configuration | 1P+N |
| Number of modules | 2 |
| Rated current | 20 A |
| Tripping characteristic | C |
| Residual current type | AC |
| Rated residual operating current | 30 mA |
| Rated operating voltage | 230 / 240 V AC |
| Rated insulation voltage | 500 V |
| Rated impulse withstand voltage | 4 kV |
| Rated frequency | 50 / 60 Hz |
| Rated breaking capacity | 6 kA |
| Mounting type | DIN rail |
| Protection rating | IP20 |
| Mechanical endurance | 20,000 operations |
| Electrical endurance | 10,000 operations |
| Standards | IEC/EN 61009-1, IEC/EN 61009-2-1 |
| HS Code | 85363030 |
| Country of Manufacture | Italy |
It protects single-phase electrical circuits against overloads, short circuits and earth leakage faults using one compact RCBO.
The ABB DS201 C20 AC30 has a rated current of 20 A.
The device provides 30 mA Type AC residual current protection.
It features a 1P+N configuration occupying two DIN modules.
The RCBO is designed for installation on a standard DIN rail inside electrical distribution boards.
ABB DS201 RCBOs are trusted by electricians and panel builders for providing dependable combined overload and residual current protection in modern electrical installations.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...