ABB S203P-C50 three-pole 50 A miniature circuit breaker with C tripping characteristic for industrial and commercial electrical circuit protection.
The ABB S203P-C50 is a premium three-pole miniature circuit breaker (MCB) from the proven ABB System pro M compact S200P series. Designed to provide dependable overload and short circuit protection, it is ideal for industrial control panels, commercial distribution systems, OEM machinery and electrical installations where reliable circuit protection is essential.
Featuring a C tripping characteristic, the S203P-C50 is well suited to general purpose electrical circuits with moderate inrush currents, including lighting, socket outlets, HVAC equipment and standard industrial loads. Its delayed thermal trip mechanism provides accurate overload protection, while the electromechanical trip mechanism rapidly disconnects fault currents to protect equipment and wiring.
With a 50 A rated current, three-pole configuration and breaking capacities of up to 25 kA at 230 / 400 V AC, the ABB S203P-C50 delivers dependable protection for demanding industrial and commercial applications. Its compact DIN rail mounted design enables straightforward installation alongside ABB modular accessories.
The ABB S203P-C50 automatically disconnects electrical circuits when overload or short circuit conditions occur, helping to protect wiring, connected equipment and electrical systems from damage caused by excessive current. Its current limiting design reduces thermal and mechanical stresses during fault conditions, improving system reliability.
The C characteristic makes this breaker suitable for a wide range of commercial and industrial applications where moderate inrush currents are expected, making it an excellent choice for distribution boards, machinery and general power circuits.
| Current | 50 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | ABB |
| Series | System pro M compact S200P |
| Model | S203P-C50 |
| Product ID | 2CDS283001R0504 |
| EAN | 4016779590662 |
| Product type | Miniature circuit breaker (MCB) |
| Rated current | 50 A |
| Number of poles | 3 |
| Number of protected poles | 3 |
| Tripping characteristic | C |
| Rated operational voltage | 400 V AC |
| Maximum operating voltage | 480Y / 277 V AC |
| Rated insulation voltage | 440 V |
| Frequency | 50 / 60 Hz |
| Breaking capacity | Up to 25 kA at 230 / 400 V AC |
| Protection rating | IP20 terminals, IP40 when installed in an enclosure |
| Mounting type | DIN rail |
| Terminal type | Screw terminals |
| Dimensions (H × W × D) | 88 × 52.5 × 69 mm |
| Weight | approx. 0.42 kg |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2, UL1077, CSA 22.2 No. 235 |
The S203P-C50 protects three-phase electrical circuits against overloads and short circuits in industrial and commercial installations.
The C curve is designed for general purpose circuits with moderate inrush currents, making it suitable for most commercial and industrial electrical loads.
The ABB S203P-C50 has a 50 A rated current.
The S203P-C50 is a three-pole miniature circuit breaker.
The breaker is designed for installation onto standard DIN rails inside electrical control panels, switchboards and distribution boards.
ABB System pro M compact miniature circuit breakers are trusted worldwide by electrical contractors, OEM manufacturers and industrial engineers for dependable circuit protection, high quality construction and long service life.
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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...