ABB S203P-D1NA 3+NP 1 A miniature circuit breaker with D tripping characteristic for high inrush circuit protection in industrial, commercial and panel building applications.
The ABB S203P-D1NA is a high performance 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 offers premium circuit protection with a compact DIN rail mounted design.
This MCB features a D tripping characteristic, making it suitable for circuits with high inrush currents such as transformers, motors, solenoids and other inductive loads. Its current limiting design helps reduce fault energy, protecting connected cables, switchgear and electrical equipment during abnormal operating conditions.
With a 1 A rated current, 3+NP configuration and high breaking capacity performance, the ABB S203P-D1NA is ideal for control circuits, three-phase systems with neutral switching and specialist electrical installations where reliable protection and precise circuit isolation are required.
Miniature circuit breakers such as the ABB S203P-D1NA automatically disconnect the electrical supply when overload or short-circuit conditions occur. This helps protect wiring, equipment and switchgear from damage caused by excessive current.
The D curve is especially useful in applications where connected equipment may draw high starting currents during normal operation. This helps reduce unwanted tripping while maintaining dependable protection during genuine electrical faults.
| Current | 1 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | ABB |
| Series | S200P |
| Model | S203P-D1NA |
| Product ID | 2CDS283103R0011 |
| Product type | Miniature circuit breaker (MCB) |
| Rated current | 1 A |
| Number of poles | 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 |
| Current limiting class | 3 |
| Pollution degree | 3 |
| Mounting type | DIN rail |
| Protection rating | IP20 |
| Built-in depth | 69 mm |
| Width | 4 modular spacings |
| EAN | 4016779592055 |
The ABB S203P-D1NA is used to protect low-current electrical circuits against overloads and short circuits, especially in applications requiring a 3+NP configuration 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-D1NA has a 1 A rated current.
3+NP means the breaker has three protected poles plus a 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, compact installation 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...