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2CSR275051R1204 ABB DSE201 M C20 AC30 Residual Current Circuit Breaker with Overcurrent Protection DSE201 M – 1P+N – 30 mA – 20 A – C – Type AC
ABB DSE201 M C20 AC30 electronic RCBO with 20 A Type C overcurrent protection, 30 mA Type AC residual current protection and compact one-module DIN rail design.
£83.42
Why Choose the ABB 2CSR275051R1204 RCBO?
The ABB 2CSR275051R1204, also known as the DSE201 M C20 AC30 - N Blue, is a high-performance 20 A Type C RCBO that combines residual current protection and overcurrent protection within a single compact DIN rail module. Designed for modern residential, commercial and industrial installations, it provides comprehensive protection against overloads, short circuits and earth leakage faults while minimising valuable panel space.
This electronic 1P+N Residual Current Circuit Breaker with Overcurrent Protection (RCBO) features a 30 mA Type AC residual current sensitivity, helping protect both people and electrical installations from electric shock and earth fault conditions. The integrated thermal-magnetic tripping mechanism delivers dependable circuit protection with fast fault clearance.
With a 20 A rated current, Type C tripping characteristic and a 10 kA breaking capacity, the DSE201 M C20 AC30 is ideal for circuits supplying equipment with moderate inrush currents. Its compact one-module design, together with a blue flying neutral lead and white functional earth lead, makes installation straightforward while maintaining excellent operational reliability.
Key Advantages
- Combines overload, short-circuit and earth leakage protection in one compact device.
- Compact one-module width saves valuable DIN rail space.
- 20 A Type C characteristic suitable for circuits with moderate inrush currents.
- 30 mA Type AC residual current protection for enhanced safety.
- 10 kA short-circuit breaking capacity.
- Supplied with blue neutral lead and functional earth lead for simplified installation.
Key Features
- ABB DSE201 M electronic RCBO.
- 1P+N configuration.
- 20 A rated current.
- Type C tripping characteristic.
- 30 mA Type AC residual current protection.
- Thermal-magnetic overcurrent release.
- DIN rail mounting.
- One-module (18 mm) construction.
- Blue flying neutral conductor.
- White functional earth conductor.
Dependable Protection for Modern Electrical Installations
The ABB DSE201 M C20 AC30 combines the functionality of a miniature circuit breaker and residual current device into one compact protective device. It rapidly disconnects the circuit during overloads, short circuits and earth leakage faults, helping to protect personnel, electrical equipment and installation wiring.
Its Type C characteristic makes it particularly suitable for lighting, commercial equipment, small motors, HVAC controls and other circuits with moderate start-up currents. The single-module design allows installers to maximise distribution board capacity without compromising safety or performance.
Typical Applications
- Commercial distribution boards.
- Residential consumer units.
- Lighting circuits.
- HVAC control systems.
- Small motor circuits.
- Industrial control panels.
Technical Specifications
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| Poles | 1-pole + N | |
|---|---|---|
| Current | 20 A | |
| Phase | Single Phase | |
| Device Type | RCBO | |
| Trip Curve | C curve | |
| Breaking Capacity | 15 kA | |
| Residual Current | 30 mA | |
| RCD Type | Type AC | |
| Manufacturer | ABB | |
| Series | DSE201 M / System pro M Compact | |
| Extended Product Type | DSE201 M C20 AC30 - N Blue | |
| Product ID | 2CSR275051R1204 | |
| EAN | 8012542265931 | |
| Product Type | Electronic RCBO | |
| Configuration | 1P+N | |
| Protected Poles | 1 | |
| Rated Current | 20 A | |
| Tripping Characteristic | Type C | |
| Residual Current Type | Type AC | |
| Rated Residual Operating Current | 30 mA | |
| Rated Voltage | 230–240 V AC | |
| Rated Frequency | 50–60 Hz | |
| Rated Short-Circuit Capacity (Icn) | 10 kA | |
| Rated Ultimate Breaking Capacity (Icu) | 15 kA | |
| Rated Service Breaking Capacity (Ics) | 7.5 kA | |
| Rated Insulation Voltage (Ui) | 500 V | |
| Rated Impulse Withstand Voltage (Uimp) | 4 kV | |
| Energy Limiting Class | 3 | |
| Mounting | 35 mm DIN rail | |
| Terminal Type | Screw terminals | |
| Dimensions (W × H × D) | 18 × 115 × 69 mm | |
| Weight | Approx. 0.20 kg | |
| Operating Temperature | -25°C to +55°C | |
| Standards | IEC 61009-1, IEC 61009-2-2, BS EN 61009-1, AS/NZS 61009 |
Frequently Asked Questions
What is the ABB 2CSR275051R1204 used for?
The ABB 2CSR275051R1204 protects single-phase circuits against overloads, short circuits and Type AC earth leakage faults using a compact one-module RCBO.
What are the current and trip ratings?
This RCBO has a 20 A rated current, a Type C tripping characteristic and a 30 mA Type AC residual current sensitivity.
What is the breaking capacity?
The device provides a 10 kA rated short-circuit breaking capacity in accordance with IEC 61009, with a 15 kA ultimate breaking capacity (Icu).
What does Type AC residual current protection detect?
Type AC RCBOs detect sinusoidal alternating residual currents typically found on standard AC electrical circuits.
How much panel space does this RCBO require?
The ABB DSE201 M occupies only one DIN rail module (18 mm), making it ideal for compact distribution boards.
Trusted ABB Electrical Protection
ABB DSE201 M RCBOs are relied upon by electrical contractors, panel builders and industrial engineers for dependable protection, compact installation and long-term performance in low-voltage electrical systems.
