ABB S203P-D2NA 3+NP 2 A miniature circuit breaker with D tripping characteristic and 25 kA breaking capacity for industrial, commercial and panel building applications.
The ABB S203P-D2NA is a premium 3+NP miniature circuit breaker (MCB) designed to provide dependable overload and short-circuit protection in industrial, commercial and panel building applications. As part of the ABB S200P System pro M compact series, it delivers high performance circuit protection with a compact DIN rail mounted design.
Featuring a D tripping characteristic, the S203P-D2NA is particularly suited to circuits with high inrush currents, including transformers, motors, solenoids and other inductive loads. Its current limiting design helps reduce fault energy, protecting connected wiring, switchgear and electrical equipment during abnormal operating conditions.
With a 2 A rated current, 3+NP configuration and a 25 kA short-circuit breaking capacity, the ABB S203P-D2NA is an excellent choice for three-phase systems requiring neutral switching and reliable protection in demanding electrical installations.
Miniature circuit breakers such as the ABB S203P-D2NA automatically disconnect the electrical supply when overload or short-circuit conditions occur. This helps protect wiring, switchgear and connected electrical equipment from damage caused by excessive current.
The D characteristic is designed for applications where connected equipment may draw high starting currents during normal operation. This helps reduce unwanted tripping while maintaining reliable protection during genuine fault conditions.
| Current | 2 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | ABB |
| Series | S200P System pro M compact |
| Model | S203P-D2NA |
| Product ID | 2CDS283103R0021 |
| EAN | 4016779592079 |
| Product type | Miniature circuit breaker (MCB) |
| Rated current | 2 A |
| Configuration | 3+NP |
| Total poles | 4 |
| Protected poles | 3 |
| Tripping characteristic | D |
| Rated operational voltage | 400 V AC |
| Rated insulation voltage | 440 V |
| Voltage type | AC |
| Rated short-circuit breaking capacity | 25 kA |
| Current limiting class | 3 |
| Pollution degree | 3 |
| Protection rating | IP20 |
| Mounting type | DIN rail |
| Built-in depth | 69 mm |
| Width | 4 modular spacings |
The ABB S203P-D2NA is used to protect low-current electrical circuits against overloads and short circuits, especially in applications requiring 3+NP switching and D curve protection.
The D characteristic is designed for circuits with high inrush currents, making it suitable for transformers, motors, solenoids and other inductive loads.
The ABB S203P-D2NA has a 2 A rated current.
3+NP means the breaker has three protected poles plus a switched neutral pole, providing four-pole switching for three-phase systems with neutral.
The breaker is designed for installation onto a standard DIN rail inside electrical distribution boards and industrial control panels.
ABB S200P miniature circuit breakers are trusted by contractors, panel builders and industrial engineers for premium circuit protection, high breaking capacity and dependable long-term performance.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
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...
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...