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2CSR255170R1204 ABB Residual Current Circuit Breaker with Overcurrent Protection DSH201 – 1P+N – 30 mA – 20 A – C – Type A
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.
£57.84
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.
Technical Specifications
Tick the specs you need, then view products that match.
| Poles | 1-pole + N | |
|---|---|---|
| Current | 20 A | |
| Phase | Single Phase | |
| Device Type | RCBO | |
| Trip Curve | C curve | |
| Breaking Capacity | 6 kA | |
| Residual Current | 30 mA | |
| RCD Type | Type AC | |
| 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 |
Frequently Asked Questions
What is the ABB 2CSR255170R1204 used for?
It protects single-phase electrical circuits against overloads, short circuits and earth leakage faults using one compact RCBO.
What is the rated current?
The ABB DS201 C20 AC30 has a rated current of 20 A.
What residual current sensitivity does it provide?
The device provides 30 mA Type AC residual current protection.
How many poles does the RCBO have?
It features a 1P+N configuration occupying two DIN modules.
How is the device installed?
The RCBO is designed for installation on a standard DIN rail inside electrical distribution boards.
Trusted ABB Circuit Protection
ABB DS201 RCBOs are trusted by electricians and panel builders for providing dependable combined overload and residual current protection in modern electrical installations.
