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2CSR256040R3325 ABB DS203NCB32AC300 RCBO 3P+N B32 Type AC 300mA
ABB DS203NCB32AC300 is a 32 A 3P+N Type B RCBO with 300 mA Type AC residual-current protection for compact three-phase electrical distribution systems.
£151.14
Why Choose the ABB DS203NCB32AC300 RCBO?
The ABB DS203NCB32AC300 is a compact 3P+N residual current circuit breaker with overcurrent protection (RCBO) designed to protect three-phase electrical circuits against overloads, short circuits and residual earth-fault currents. Part of the ABB DS203NC series, it integrates residual-current and overcurrent protection into a space-saving four-module device.
This RCBO has a rated current of 32 A, a Type B tripping characteristic and a rated residual operating current of 300 mA. Its Type AC residual-current characteristic provides detection of sinusoidal alternating residual currents, making it suitable for appropriate AC circuits where Type AC protection is specified.
The DS203NC B32 AC300 is designed for three-phase plus neutral distribution circuits and combines multiple protective functions within one DIN-rail device. Its compact four-module construction helps conserve valuable switchboard space while providing dependable ABB circuit protection for commercial, industrial and building-services applications.
Key Advantages
- Combined residual-current, overload and short-circuit protection in one device.
- 32 A rated current with Type B tripping characteristic.
- 300 mA rated residual operating current.
- Type AC residual-current detection for sinusoidal alternating residual currents.
- 3P+N configuration for three-phase circuits with neutral.
- Compact four-module construction for efficient distribution-board installation.
Key Features
- ABB DS203NC RCBO series.
- 32 A rated current.
- Type B tripping curve.
- 300 mA residual-current sensitivity.
- Type AC residual-current characteristic.
- 3P+N four-pole configuration with three protected poles.
- 500 V rated insulation voltage (Ui).
- 4 kV rated impulse withstand voltage (Uimp).
- DIN-rail mounting for modular electrical distribution systems.
- Compact four-module format.
Reliable Protection for Three-Phase Circuits
RCBOs such as the ABB DS203NCB32AC300 combine overcurrent and residual-current protection within a single modular device. The overcurrent function responds to overload and short-circuit conditions, while the residual-current function detects earth-fault currents, providing coordinated protection for suitable three-phase electrical circuits.
The DS203NC series is designed for compact three-phase distribution systems. Its 3P+N arrangement and four-module construction help reduce the panel space required compared with separate protective devices, while the Type B characteristic provides defined tripping behaviour for appropriate final circuits.
Typical Applications
- Three-phase electrical distribution circuits.
- Commercial and industrial distribution boards.
- Electrical control panels and switchboards.
- Three-phase circuits requiring 3P+N protection.
- Circuits requiring combined overcurrent and residual-current protection.
- Building services and infrastructure electrical systems.
Technical Specifications
| Series | DS203NC |
|---|---|
| SKU | DS203NCB32AC300 |
| ABB order code | 2CSR256040R3325 |
| Product group | DS200 / DSH200 RCBO |
| Product type | Residual current circuit breaker with overcurrent protection (RCBO) |
| Rated current | 32 A |
| Tripping characteristic | B |
| Rated residual operating current | 300 mA |
| Residual-current type | AC |
| Number of poles | 4 (3P+N) |
| Number of protected poles | 3 |
| Rated insulation voltage (Ui) | 500 V |
| Rated impulse withstand voltage (Uimp) | 4 kV |
| Mounting type | DIN rail |
| Width | 4 modules |
| Installation depth | 69 mm |
| Weight | approx. 0.480 kg |
| Standard | IEC 61009-1 |
Frequently Asked Questions
What is the ABB DS203NCB32AC300 used for?
The ABB DS203NCB32AC300 is an RCBO designed to protect suitable three-phase plus neutral electrical circuits against overloads, short circuits and residual earth-fault currents.
What is the rated current and tripping curve of the DS203NCB32AC300?
The DS203NCB32AC300 has a rated current of 32 A and a Type B tripping characteristic.
What residual-current protection does the DS203NCB32AC300 provide?
The RCBO has a rated residual operating current of 300 mA and uses a Type AC residual-current characteristic for detecting sinusoidal alternating residual currents.
What pole configuration does the ABB DS203NCB32AC300 use?
The DS203NCB32AC300 has a 3P+N configuration with four poles and three protected phase poles, making it suitable for appropriate three-phase plus neutral circuits.
How much panel space does the DS203NCB32AC300 require?
The ABB DS203NCB32AC300 uses a compact four-module DIN-rail format, integrating residual-current and overcurrent protection within one device.
Trusted ABB Circuit Protection
ABB DS203NC residual current circuit breakers with overcurrent protection provide compact combined protection for three-phase electrical distribution systems, integrating overcurrent and residual-current protection in a space-saving four-module design.
