ABB S203M-C50 miniature circuit breaker from the System pro M Compact S200M series, 3-pole, 50 A, Type C, 10 kA breaking capacity for reliable three-phase circuit protection.
£110.86
The ABB S203M-C50 is a robust 3-pole miniature circuit breaker (MCB) designed to protect electrical circuits against overloads and short circuits in commercial, industrial and OEM installations. As part of the proven ABB System pro M Compact S200M series, it delivers high-performance protection in a compact DIN rail mounted format.
Featuring a Type C tripping characteristic, the S203M-C50 is suitable for circuits with moderate inrush currents, including motors, transformers, HVAC equipment, automation systems and industrial machinery. Its thermal and magnetic trip mechanisms provide dependable overload and short-circuit protection for demanding electrical systems.
With a 50 A rated current, 3-pole configuration and 10 kA breaking capacity, the ABB S203M-C50 is ideal for higher load three-phase circuits where reliable disconnection, ABB build quality and standards-compliant protection are required.
The ABB S203M-C50 automatically disconnects electrical circuits when overload or short-circuit conditions occur. This helps protect cables, switchgear, control equipment and connected devices from damage caused by excessive current.
Its Type C characteristic makes it suitable for equipment that may draw a temporary inrush current during start-up. The 3-pole design provides simultaneous protection and disconnection across three conductors, making it a practical choice for industrial panels, machinery and commercial distribution systems.
| Current | 50 A |
|---|---|
| Phase | Single Phase |
| Manufacturer | ABB |
| Series | System pro M Compact S200M |
| Model | S203M-C50 |
| Manufacturer part number | 2CDS273001R0504 |
| EAN | 4016779543996 |
| Product type | Miniature Circuit Breaker (MCB) |
| Rated current | 50 A |
| Tripping characteristic | Type C |
| Number of poles | 3P |
| Rated operational voltage | Up to 440 V AC |
| Rated DC voltage | Up to 125 V DC |
| Frequency | 50 / 60 Hz |
| Breaking capacity | 10 kA |
| Protection rating | IP20 |
| Mounting type | DIN rail |
| Dimensions (H × W × D) | approx. 88 × 52.5 × 69 mm |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2, UL 1077 |
| HS Code | 85362010 |
| Country of Manufacture | Germany |
The ABB S203M-C50 is used to protect electrical circuits against overloads and short circuits in industrial, commercial and automation applications.
The S203M-C50 has a rated current of 50 A.
Type C means the breaker is designed for circuits with moderate inrush currents, such as motors, transformers, automation equipment and general power circuits.
This model is a 3-pole miniature circuit breaker, providing protection and disconnection across three conductors.
The ABB S203M-C50 has a rated breaking capacity of 10 kA.
ABB System pro M Compact miniature circuit breakers are trusted by electricians, panel builders and automation engineers for reliable protection, compact installation and long-term performance in demanding electrical systems.
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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...