ABB S203P-C0.5NA System pro M compact S200P miniature circuit breaker featuring a 3P+N configuration, 0.5 A rated current and C curve characteristic for commercial and industrial circuit protection.
The ABB S203P-C0.5NA is a premium 3P+N miniature circuit breaker (MCB) from the ABB System pro M compact S200P series. Designed to provide dependable overload and short circuit protection, it is ideal for commercial and industrial electrical installations requiring reliable protection of three-phase circuits with a switched neutral.
Featuring a C tripping characteristic, the S203P-C0.5NA is designed for general-purpose circuits with moderate inrush currents. It is particularly suitable for automation systems, control panels, instrumentation, lighting circuits and low-current distribution applications where reliable protection and long service life are essential.
With a 0.5 A rated current, 3P+N configuration and a breaking capacity of up to 25 kA, this DIN rail mounted miniature circuit breaker delivers outstanding performance while remaining compatible with ABB's extensive range of modular accessories for modern switchboards and industrial control systems.
The ABB S203P-C0.5NA combines thermal overload protection with instantaneous magnetic short circuit protection to safeguard electrical installations. Its C curve characteristic offers an excellent balance between nuisance trip resistance and dependable fault protection for circuits with moderate inrush currents.
As part of ABB's trusted System pro M compact range, the S203P-C0.5NA provides long service life, dependable operation and compatibility with a comprehensive range of modular accessories, making it ideal for industrial automation, control panels and commercial electrical installations.
| Current | 0.5 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | ABB |
| Series | System pro M compact S200P |
| Model | S203P-C0.5NA |
| Product ID | 2CDS283103R0984 |
| EAN | 4016779591027 |
| Product type | Miniature Circuit Breaker (MCB) |
| Rated current | 0.5 A |
| Poles | 3P+N |
| Protected poles | 3 |
| Trip characteristic | C Curve |
| Rated operational voltage | 400 V AC |
| Rated insulation voltage | 440 V |
| Frequency | 50 / 60 Hz |
| Breaking capacity | 25 kA |
| Current limiting class | 3 |
| Protection rating | IP20 |
| Mounting type | DIN rail |
| Terminal type | Screw terminals |
| Dimensions (H × W × D) | approx. 88 × 70 × 69 mm |
| Weight | approx. 0.56 kg |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2, UL1077, CSA 22.2 No. 235 |
The ABB S203P-C0.5NA protects low-current three-phase electrical circuits against overloads and short circuits in commercial and industrial installations.
A C curve MCB is designed for circuits with moderate inrush currents, making it suitable for general power distribution, automation equipment and control systems.
This model features a 3P+N configuration, providing protection for three phases together with a switched neutral.
The ABB S203P-C0.5NA has a rated current of 0.5 A.
Yes. The S203P-C0.5NA is designed for installation on standard DIN rails used in switchboards, distribution boards and industrial control panels.
ABB System pro M compact miniature circuit breakers are trusted by panel builders, electrical contractors and OEM manufacturers for dependable circuit protection, robust construction and long service life in demanding commercial and industrial environments.
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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...