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2CSR256140R3064 ABB DS203NCC6A300 DS203NC C6 A300 3P+N Type A RCBO 6A 300mA
ABB DS203NCC6A300 is a 3P+N Type A RCBO with 6 A rated current, C tripping characteristic, 300 mA residual-current sensitivity and 6 kA breaking capacity for three-phase circuit protection.
£164.87
Why Choose the ABB DS203NCC6A300 RCBO?
The ABB DS203NCC6A300 is a compact and dependable 3P+N residual current circuit breaker with overcurrent protection (RCBO) designed to protect three-phase electrical circuits against overloads, short circuits and earth leakage faults. As part of the ABB DS203NC series, it combines residual-current and overcurrent protection in a single four-module device for space-efficient distribution boards.
This RCBO features a 6 A rated current, C tripping characteristic and Type A residual-current detection. Type A protection detects sinusoidal AC residual currents as well as pulsating DC residual currents, making the device suitable for a wide range of modern commercial and industrial electrical loads.
With a rated residual operating current of 300 mA and a rated short-circuit breaking capacity of 6 kA to EN/IEC 61009, the DS203NCC6A300 provides coordinated circuit and earth-fault protection. Its compact 3P+N, four-module construction helps reduce switchboard space compared with separate residual-current and miniature circuit-breaker devices.
Key Advantages
- Combined residual-current, overload and short-circuit protection in one device.
- 3P+N configuration designed for three-phase circuits with neutral.
- 6 A rated current with C tripping characteristic.
- 300 mA Type A residual-current sensitivity.
- 6 kA rated short-circuit breaking capacity according to EN/IEC 61009.
- Compact four-module design helps save distribution-board space.
- Integrated test pushbutton enables periodic verification of residual-current operation.
- Earth-fault and contact-position indication assists inspection and fault identification.
Key Features
- ABB DS203NC RCBO series.
- 3P+N configuration with three protected poles.
- 6 A rated current.
- C tripping characteristic.
- Type A residual-current detection.
- 300 mA rated residual operating current.
- 415 V AC rated voltage.
- 50/60 Hz rated frequency.
- 6 kA Icn breaking capacity according to EN/IEC 61009.
- Test pushbutton for checking residual-current functionality.
- Contact position indicator and earth-fault indicator.
- DIN-rail modular format for electrical distribution boards.
Reliable Protection for Three-Phase Electrical Circuits
RCBOs combine the functions normally provided by a miniature circuit breaker and residual-current device. The ABB DS203NCC6A300 monitors the circuit for overcurrent conditions while also detecting residual currents to earth, allowing a single modular device to provide comprehensive protection against overloads, short circuits and earth faults.
The ABB DS203NC range is particularly suited to installations where distribution-board space is limited. Its four-module 3P+N format provides a compact alternative to separate MCB and residual-current protection devices, while integrated status and earth-fault indication simplify inspection, maintenance and fault identification.
Typical Applications
- Three-phase commercial electrical distribution systems.
- Industrial electrical distribution boards.
- Machinery and automation power circuits.
- Three-phase circuits requiring Type A residual-current protection.
- Electrical installations requiring combined overload and earth-fault protection.
- Space-constrained switchboards and retrofit installations.
Technical Specifications
| Series | DS203NC |
|---|---|
| SKU | DS203NCC6A300 |
| ABB order code | 2CSR256140R3064 |
| Product type | Residual current circuit breaker with overcurrent protection (RCBO) |
| Number of poles | 3P+N |
| Protected poles | 3 |
| Rated current | 6 A |
| Tripping characteristic | C |
| Residual-current type | Type A |
| Rated residual operating current | 300 mA |
| Rated voltage | 415 V AC |
| Frequency | 50/60 Hz |
| Rated short-circuit breaking capacity Icn | 6 kA |
| Rated insulation voltage Ui | 500 V |
| Rated impulse withstand voltage Uimp | 4 kV |
| Width | 4 modules / 71 mm |
| Dimensions (W × H × D) | 71 × 85 × 69 mm |
| Weight | approx. 0.48 kg |
| Standards | IEC/EN 61009-1, IEC/EN 61009-2-1 |
Frequently Asked Questions
What is the ABB DS203NCC6A300 used for?
The ABB DS203NCC6A300 is a 3P+N RCBO used to protect three-phase electrical circuits against overloads, short circuits and residual earth-fault currents.
What is the rated current of the DS203NCC6A300?
The RCBO has a rated current of 6 A and uses a C tripping characteristic.
What residual-current sensitivity does this RCBO provide?
The DS203NCC6A300 has a rated residual operating current of 300 mA and uses Type A residual-current detection.
What is the breaking capacity of the ABB DS203NCC6A300?
The device has a rated short-circuit breaking capacity Icn of 6 kA according to EN/IEC 61009.
How much space does the DS203NC RCBO require?
The DS203NCC6A300 uses a compact four-module 3P+N format, allowing combined residual-current and overcurrent protection to be installed efficiently in electrical distribution boards.
Trusted ABB Circuit Protection
ABB DS203NC RCBOs combine residual-current and overcurrent protection in a compact modular format, providing dependable protection for modern three-phase commercial and industrial electrical installations.
