Why Choose the ABB DS201 C20 AC30 RCBO?
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.
Key Advantages
- Combined earth leakage, overload and short-circuit protection.
- 20 A rated current for single-phase circuits.
- 30 mA residual current sensitivity for additional personnel protection.
- Type AC residual current detection.
- C tripping characteristic suitable for general-purpose applications.
- Compact 2-module DIN rail design.
- High mechanical and electrical endurance.
- Ideal for residential and commercial distribution boards.
Key Features
- ABB DS201 RCBO series.
- 1P+N configuration.
- 20 A rated current.
- 30 mA rated residual current.
- Type AC residual current protection.
- C tripping characteristic.
- 230 / 240 V AC rated voltage.
- 6 kA rated breaking capacity.
- DIN rail mounting.
- Thermal magnetic trip mechanism.
- IP20 protected terminals.
- Manufactured to IEC/EN 61009-1 and IEC/EN 61009-2-1.
Reliable Combined Circuit Protection
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.
Typical Applications
- Residential consumer units.
- Commercial distribution boards.
- Lighting circuits.
- Socket outlet circuits.
- Office electrical installations.
- Retail premises.
- General low voltage distribution.
- Electrical refurbishment projects.
