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2CSR256040R1105 ABB DS203NC B10 AC30 RCBO 3P+N 10A 30mA 6kA
ABB DS203NC B10 AC30 is a 3P+N 10 A B-curve Type AC RCBO with 30 mA residual-current sensitivity and 6 kA short-circuit breaking capacity for three-phase circuit protection.
£137.36
Why Choose the ABB DS203NC B10 AC30 RCBO?
The ABB DS203NC B10 AC30 is a compact 3P+N residual current circuit breaker with overcurrent protection (RCBO) designed to protect three-phase circuits against overloads, short circuits and sinusoidal AC residual currents. As part of the ABB DS200 / DSH200 RCBO family, it combines residual-current and overcurrent protection in a single modular device for commercial and industrial electrical distribution systems.
This RCBO integrates the functions of a miniature circuit breaker and a residual-current protective device, helping simplify panel design while providing comprehensive circuit protection. Its Type AC residual-current characteristic detects sinusoidal alternating residual currents, while thermal-magnetic protection provides dependable operation under overload and short-circuit conditions.
With a rated current of 10 A, a B tripping characteristic, 30 mA residual-current sensitivity and a 6 kA rated short-circuit breaking capacity, the DS203NC B10 AC30 is suited to three-phase circuits with relatively low inrush currents. Its 3P+N configuration provides protection for three-phase circuits with neutral in a compact DIN-rail format.
Key Advantages
- Combines residual-current, overload and short-circuit protection in one device.
- 3P+N configuration for three-phase circuits with neutral.
- 10 A rated current with B-curve tripping characteristic.
- 30 mA residual-current sensitivity for additional protection against electric shock.
- Type AC residual-current characteristic for sinusoidal alternating fault currents.
- 6 kA rated short-circuit breaking capacity.
Key Features
- ABB DS203NC RCBO series.
- 3P+N pole configuration.
- 10 A rated current.
- B tripping characteristic.
- 30 mA rated residual operating current.
- Type AC residual-current protection.
- 6 kA rated short-circuit breaking capacity.
- Combined residual-current and thermal-magnetic overcurrent protection.
- DIN-rail mounting for modular electrical distribution systems.
Reliable Protection for Three-Phase Circuits
RCBOs combine miniature circuit breaker and residual-current protection within one device. They disconnect the protected circuit when excessive current occurs because of an overload or short circuit while also detecting residual earth leakage, providing comprehensive protection for electrical installations.
The ABB DS203NC B10 AC30 combines a B-curve thermal-magnetic characteristic with Type AC residual-current protection. The B characteristic is suited to circuits with relatively low starting currents, while the 30 mA residual-current sensitivity provides additional protection against electric shock in suitable installations.
Typical Applications
- Commercial three-phase electrical installations.
- Industrial electrical distribution systems.
- Three-phase final circuits with neutral.
- Control and auxiliary circuits.
- Electrical distribution boards and panels.
- Circuits with relatively low starting currents requiring combined overcurrent and residual-current protection.
Technical Specifications
| Series | DS203NC |
|---|---|
| Product group | DS200 / DSH200 RCBO |
| ABB order code | 2CSR256040R1105 |
| Product type | Residual current circuit breaker with overcurrent protection (RCBO) |
| Number of poles | 3P+N |
| Rated current | 10 A |
| Tripping characteristic | B |
| Rated residual current | 30 mA |
| Residual-current type | AC |
| Rated short-circuit breaking capacity | 6 kA |
| Rated voltage | 400–415 V AC |
| Frequency | 50 / 60 Hz |
| Mounting type | DIN rail |
Frequently Asked Questions
What is the ABB DS203NC B10 AC30 used for?
It is a 3P+N RCBO used to protect three-phase circuits against overloads, short circuits and sinusoidal AC residual currents.
What is the rated current of the DS203NC B10 AC30?
The RCBO has a rated current of 10 A and uses a B tripping characteristic.
What residual-current sensitivity does this RCBO provide?
The DS203NC B10 AC30 has a rated residual operating current of 30 mA, providing additional protection against electric shock in suitable installations.
What residual-current type is the DS203NC B10 AC30?
It is a Type AC RCBO designed to detect sinusoidal alternating residual currents.
What is the breaking capacity of the ABB DS203NC B10 AC30?
The DS203NC B10 AC30 has a rated short-circuit breaking capacity of 6 kA.
Trusted ABB Circuit Protection
ABB DS203NC RCBOs combine three-phase overcurrent and residual-current protection in a compact modular format, providing dependable protection for commercial and industrial electrical distribution systems.
