ABB DS203NC C16 A100 3P+N RCBO with 16 A rated current, 100 mA Type A residual current protection and C tripping characteristic.
£253.65
The ABB 2CSR256140R2164, also identified as the DS203NC C16 A100, is a high quality residual current circuit breaker with overcurrent protection (RCBO) designed for three-phase electrical installations. Combining residual current, overload and short-circuit protection in a single compact device, it provides comprehensive protection for electrical systems while reducing the space required within distribution boards.
Part of ABB's proven System pro M compact DS203NC series, this RCBO features a 3P+N configuration housed within four DIN modules. It protects all three phase conductors against overload and short-circuit faults while monitoring earth leakage across the complete circuit, making it suitable for commercial, industrial and infrastructure applications.
The DS203NC C16 A100 has a rated current of 16 A, a C tripping characteristic and a rated residual operating current of 100 mA. Its Type A residual current detection responds to sinusoidal AC and pulsating DC residual currents, while operating from a standard 400–415 V AC three-phase supply.
The ABB DS203NC C16 A100 continuously monitors current flowing through the protected conductors while providing automatic disconnection in the event of overloads, short circuits or earth leakage faults. This integrated protection helps improve electrical safety while protecting valuable equipment and reducing installation complexity.
Its compact four-module construction makes it an excellent choice for modern distribution boards where space efficiency and dependable circuit protection are equally important.
| Current | 16 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | ABB |
| Series | DS203NC |
| Model | DS203NC C16 A100 |
| Product ID | 2CSR256140R2164 |
| EAN | 8012542839828 |
| Product type | Residual current circuit breaker with overcurrent protection |
| Configuration | 3P+N |
| Number of poles | 4 |
| Protected poles | 3 |
| Rated current | 16 A |
| Tripping characteristic | C |
| Residual current type | Type A |
| Rated residual operating current | 100 mA |
| Rated voltage | 400–415 V AC |
| Rated insulation voltage | 500 V |
| Rated impulse withstand voltage | 4 kV |
| Rated frequency | 50 / 60 Hz |
| Rated short-circuit capacity | 6 kA |
| Ultimate short-circuit breaking capacity | 10 kA |
| Energy limiting class | 3 |
| Overvoltage category | III |
| Electrical endurance | 10,000 operations |
| Mechanical endurance | 20,000 operations |
| Mounting type | DIN rail |
| Module width | 4 modules |
| Standards | IEC/EN 61009-1, IEC/EN 61009-2-1 |
| HS Code | 85363010 |
| Country of Manufacture | Italy |
It protects three-phase electrical circuits against earth leakage, overloads and short circuits using a single compact RCBO.
The ABB DS203NC C16 A100 has a rated current of 16 A.
The device has a rated residual operating current of 100 mA with Type A residual current detection.
It features a 3P+N configuration with four poles and protection applied to the three phase conductors.
The RCBO is designed for quick installation onto a standard DIN rail within electrical distribution boards.
ABB DS203NC RCBOs are trusted by electrical contractors, panel builders and industrial engineers for providing dependable combined residual current and overcurrent protection in three-phase electrical systems.
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...