ABB S203M-C40 3-pole 40 A Type C miniature circuit breaker with 10 kA breaking capacity for commercial, industrial and OEM electrical protection.
£105.55
The ABB S203M-C40 is a robust 3-pole miniature circuit breaker (MCB) designed to provide dependable protection against overloads and short circuits in commercial, industrial and OEM electrical installations. As part of the proven ABB System pro M Compact S200M series, it combines compact dimensions, reliable performance and long service life for demanding three-phase electrical systems.
Featuring a Type C tripping characteristic, the S203M-C40 is ideally suited to circuits with moderate inrush currents, including motors, transformers, HVAC equipment, automation systems and industrial machinery. Its current-limiting design reduces fault energy whilst providing dependable overload and short-circuit protection.
With a 40 A rated current, 3-pole configuration and a 10 kA breaking capacity, the ABB S203M-C40 offers professional-grade circuit protection whilst complying with IEC/EN 60898-1 and IEC/EN 60947-2 standards.
The ABB S203M-C40 automatically disconnects electrical circuits whenever overload or short-circuit conditions occur, helping to protect cables, switchgear and connected equipment from excessive current. Its current-limiting technology reduces the energy released during fault conditions, improving both equipment protection and electrical safety.
Designed for professional installations, the S200M range delivers long mechanical endurance, dependable operation and compatibility with ABB modular accessories. It is widely used in industrial control panels, commercial distribution boards and machine building applications.
| Current | 40 A |
|---|---|
| Phase | Single Phase |
| Manufacturer | ABB |
| Series | System pro M Compact S200M |
| Model | S203M-C40 |
| Manufacturer part number | 2CDS273001R0404 |
| EAN | 4016779550499 |
| Product type | Miniature Circuit Breaker (MCB) |
| Rated current | 40 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) | 88 × 52.5 × 69 mm |
| Weight | approx. 0.36 kg |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2, UL 1077 |
| HS Code | 85362010 |
| Country of Manufacture | Germany |
The ABB S203M-C40 protects three-phase electrical circuits against overloads and short circuits in industrial, commercial and automation applications.
The S203M-C40 has a rated current of 40 A.
Type C circuit breakers are designed for circuits with moderate inrush currents, making them suitable for motors, transformers, HVAC equipment and general power distribution.
This model is a 3-pole miniature circuit breaker, providing simultaneous protection and isolation across three conductors.
The ABB S203M-C40 has a rated short-circuit breaking capacity of 10 kA.
ABB System pro M Compact miniature circuit breakers are trusted by electricians, panel builders and automation engineers worldwide for dependable circuit protection, compact installation and long-term reliability.
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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...