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2CSR253001R1205 ABB DS203 AC-B20/0.03 RCBO 3P AC Type B 20A 30mA 6kA
ABB DS203 AC-B20/0.03 is a 3-pole AC Type RCBO with B tripping characteristic, 20 A rated current, 30 mA residual current sensitivity and 6 kA short-circuit breaking capacity for commercial and industrial circuit protection.
£201.65
Why Choose the ABB DS203 AC-B20/0.03 RCBO?
The ABB DS203 AC-B20/0.03 is a dependable 3-pole residual current circuit breaker with overcurrent protection (RCBO) designed to provide combined protection against overloads, short circuits and earth fault currents. As part of the ABB DS200 RCBO series, it combines residual current and overcurrent protection in a single DIN rail-mounted device for commercial and industrial electrical installations.
This AC Type RCBO detects sinusoidal alternating residual currents, while its B tripping characteristic is suited to circuits with relatively low inrush currents. By integrating residual current and miniature circuit-breaker functions within one protective device, the DS203 AC-B20/0.03 helps simplify distribution-board design while providing dedicated protection for individual three-phase circuits.
With a rated current of 20 A, a rated residual operating current of 30 mA and a rated short-circuit breaking capacity of 6 kA, the DS203 AC-B20/0.03 provides reliable circuit and additional personal protection. Its three-pole configuration and DIN rail format make it suitable for commercial distribution boards, industrial control panels and other fixed electrical installations.
Key Advantages
- Combined residual current, overload and short-circuit protection in one device.
- 20 A rated current for protected three-phase circuits.
- 30 mA residual current sensitivity for additional protection against electric shock.
- AC Type residual current detection for sinusoidal alternating earth fault currents.
- B tripping characteristic suitable for circuits with relatively low inrush currents.
- 6 kA rated short-circuit breaking capacity.
- DIN rail-mounted construction simplifies installation in distribution boards and control panels.
Key Features
- ABB DS200 RCBO series.
- 3-pole configuration.
- 20 A rated current.
- 30 mA rated residual operating current.
- AC Type residual current characteristic.
- B overcurrent tripping characteristic.
- 6 kA short-circuit breaking capacity.
- Combined residual current and overcurrent protection.
- Integrated test facility for checking residual current operation.
- DIN rail mounting for electrical distribution boards and control panels.
Reliable Protection for Three-Phase Circuits
RCBOs combine residual current protection with overload and short-circuit protection in a single device. This allows individual electrical circuits to be protected against several common electrical fault conditions while reducing the need for separate residual current devices and miniature circuit breakers.
The DS203 AC-B20/0.03 uses an AC Type residual current characteristic for sinusoidal alternating earth fault currents and a B tripping characteristic for circuits with relatively low starting currents. Its integrated protection functions make it suitable for a broad range of commercial and industrial three-phase distribution applications.
Typical Applications
- Commercial electrical distribution boards.
- Industrial three-phase circuits.
- Control panels and electrical enclosures.
- Lighting and general-purpose electrical circuits.
- Circuits with relatively low starting currents.
- Installations requiring combined residual current and overcurrent protection.
Technical Specifications
| Series | DS200 |
|---|---|
| ABB order code | 2CSR253001R1205 |
| Product type | Residual current circuit breaker with overcurrent protection (RCBO) |
| Number of poles | 3 |
| Rated current | 20 A |
| Rated residual current | 30 mA |
| Residual current type | AC Type |
| Tripping characteristic | B |
| Rated voltage | 400 V AC |
| Rated short-circuit breaking capacity | 6 kA |
| Frequency | 50 / 60 Hz |
| Mounting type | DIN rail |
| Standards | IEC/EN 61009-1 |
Frequently Asked Questions
What is the ABB DS203 AC-B20/0.03 used for?
It is used to protect three-phase electrical circuits against overloads, short circuits and sinusoidal alternating earth fault currents in commercial and industrial installations.
What is the rated current of the DS203 AC-B20/0.03?
The ABB DS203 AC-B20/0.03 has a rated current of 20 A.
What residual current sensitivity does this RCBO provide?
It has a rated residual operating current of 30 mA and uses an AC Type residual current characteristic.
What does the B characteristic mean?
The B tripping characteristic is suited to circuits with relatively low inrush currents, making the RCBO suitable for many general-purpose electrical loads.
What is the breaking capacity of the ABB DS203 AC-B20/0.03?
The DS203 AC-B20/0.03 has a rated short-circuit breaking capacity of 6 kA.
Trusted ABB Circuit Protection
ABB DS200 RCBOs provide integrated residual current and overcurrent protection for commercial and industrial electrical systems, combining dependable circuit protection with convenient DIN rail installation.
