Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
2CSR273101R1504 ABB DS203MAC500.03 DS203 M A-C50/0.03 50 A 30 mA RCBO
ABB DS203MAC500.03 is a 3-pole 50 A C-curve Type A RCBO with 30 mA residual-current sensitivity and 10 kA nominal short-circuit breaking capacity for three-phase commercial and industrial circuit protection.
£299.34
Why Choose the ABB DS203MAC500.03 RCBO?
The ABB DS203MAC500.03 is a high-performance 3-pole residual current circuit breaker with overcurrent protection (RCBO) designed to provide combined protection against overloads, short circuits and residual earth fault currents. Part of the established ABB DS200 / DS203 M series, it integrates residual-current and overcurrent protection into a single DIN-rail mounted device for commercial and industrial three-phase electrical installations.
With a rated current of 50 A, 30 mA residual-current sensitivity and Type C tripping characteristic, the DS203 M A-C50/0.03 provides dependable protection for circuits with moderate starting or inrush currents. Its Type A residual-current detection responds to sinusoidal alternating and pulsating DC residual currents, making it suitable for circuits supplying equipment incorporating electronic components.
The DS203MAC500.03 provides a nominal short-circuit breaking capacity of 10 kA and is designed for three-phase electrical distribution applications. ABB supplies this model under order code 2CSR273101R1504, combining robust circuit protection with a modular format suitable for professional distribution boards and control panels.
Key Advantages
- Combined residual-current, overload and short-circuit protection in one device.
- 3-pole configuration for three-phase circuit protection.
- 50 A rated current for higher-current commercial and industrial circuits.
- 30 mA residual-current sensitivity for additional protection against electric shock.
- Type C tripping characteristic suitable for circuits with moderate starting and inrush currents.
- Type A residual-current detection for sinusoidal AC and pulsating DC residual currents.
- 10 kA nominal short-circuit breaking capacity for demanding electrical installations.
- Integrated test facility enables routine verification of residual-current operation.
Key Features
- ABB DS203 M Type A RCBO from the DS200 series.
- 3-pole configuration.
- 50 A rated current.
- 30 mA rated residual operating current.
- C characteristic overcurrent release.
- Type A residual-current protection.
- 10 kA nominal short-circuit breaking capacity.
- Combined overload, short-circuit and residual-current protection.
- Detection of sinusoidal alternating and pulsating DC residual currents.
- DIN-rail format for modular electrical distribution equipment.
- Integrated test pushbutton for checking residual-current functionality.
Reliable Type A Three-Phase Circuit Protection
RCBOs combine overcurrent and residual-current protection within a single protective device. The ABB DS203 M A-C50/0.03 protects three-phase circuits against overload and short-circuit currents while also detecting sinusoidal AC and pulsating DC residual currents that can occur in modern electrical equipment incorporating electronic components.
The ABB DS200 range is designed for professional electrical distribution applications where dependable protection and efficient panel installation are required. Combining circuit-breaker and residual-current functions within one device reduces the need for separate protective components, while the integrated test facility supports routine functional checks during inspection and maintenance.
Typical Applications
- Commercial three-phase electrical distribution boards.
- Industrial electrical installations.
- Higher-current three-phase final circuits.
- Industrial control and automation circuits.
- Circuits supplying equipment incorporating electronic components.
- Electrical control and distribution panels.
- Circuits requiring combined 30 mA Type A residual-current and overcurrent protection.
Technical Specifications
| Series | DS200 / DS203 M |
|---|---|
| SKU | DS203MAC500.03 |
| ABB order code | 2CSR273101R1504 |
| Product type | Residual current circuit breaker with overcurrent protection (RCBO) |
| Number of poles | 3 |
| Rated current | 50 A |
| Tripping characteristic | C |
| Residual-current type | A |
| Rated residual current | 30 mA |
| Nominal short-circuit breaking capacity | 10 kA |
| Rated voltage | 400 V AC |
| Mounting | DIN rail |
Frequently Asked Questions
What is the ABB DS203MAC500.03 used for?
The ABB DS203MAC500.03 provides combined protection against overloads, short circuits and residual currents in three-phase commercial and industrial electrical installations.
What is the rated current of the DS203 M A-C50/0.03?
The RCBO has a rated current of 50 A and uses a Type C tripping characteristic.
What residual-current protection does this RCBO provide?
The DS203 M A-C50/0.03 is a Type A RCBO with a rated residual operating current of 30 mA, providing detection of sinusoidal AC and pulsating DC residual currents.
What is the short-circuit capacity of the ABB DS203MAC500.03?
The DS203MAC500.03 has a nominal short-circuit breaking capacity of 10 kA.
What is the ABB order code for the DS203 M A-C50/0.03?
The ABB order code is 2CSR273101R1504.
Trusted ABB Circuit Protection
ABB DS200 series RCBOs provide integrated residual-current and overcurrent protection for commercial and industrial electrical systems, combining dependable circuit protection with practical modular installation and straightforward functional testing.
