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2CDS273061R0404 ABB S203M-C40UC 40 A 3-Pole Type C 10 kA Miniature Circuit Breaker
ABB S203M-C40UC is a 40 A three-pole Type C miniature circuit breaker with 10 kA short-circuit breaking capacity, designed for reliable AC and DC circuit protection.
£330.68
Why Choose the ABB S203M-C40UC Miniature Circuit Breaker?
The ABB S203M-C40UC is a high-performance three-pole miniature circuit breaker (MCB) designed to provide reliable overload and short-circuit protection in AC and DC electrical systems. Part of the established ABB System pro M compact® S200 M UC series, this universal-current circuit breaker combines flexible AC/DC operation with robust fault protection for industrial, control and traction-related applications.
With a rated current of 40 A, a Type C tripping characteristic and three protected poles, the S203M-C40UC is suitable for circuits where moderate inrush currents can occur during normal operation. Its C characteristic makes it well suited to industrial distribution, machinery, control equipment and other electrical loads requiring dependable overload and short-circuit protection.
The S203M-C40UC provides a 10 kA short-circuit breaking capacity and is suitable for AC and DC applications. Its compact modular construction, DIN-rail mounting and compatibility with ABB System pro M compact® accessories make it a flexible circuit-protection solution for distribution boards, control panels, machinery and industrial electrical installations.
Key Advantages
- Universal AC/DC miniature circuit breaker for flexible circuit protection.
- 40 A rated current for industrial and electrical distribution circuits.
- Three-pole configuration for simultaneous protection of three conductors.
- Type C tripping characteristic suitable for circuits with moderate inrush currents.
- 10 kA short-circuit breaking capacity for robust fault protection.
- Suitable for industrial, machinery and traction-related electrical applications.
- Compatible with the established ABB System pro M compact® accessory range.
Key Features
- ABB S200 M UC / System pro M compact® series.
- 40 A rated current.
- 3-pole configuration.
- C-curve tripping characteristic.
- 10 kA short-circuit breaking capacity.
- Suitable for AC and DC circuit protection.
- Compliance with IEC/EN 60898-1 and IEC/EN 60947-2.
- Standard modular DIN-rail mounting.
- IP20 protection rating.
- Compatible with ABB System pro M compact® accessories.
Reliable AC and DC Circuit Protection
Miniature circuit breakers protect electrical circuits by automatically interrupting current when an overload or short-circuit condition occurs. The ABB S203M-C40UC combines thermal overload protection with magnetic short-circuit protection, helping prevent excessive current from damaging conductors, equipment and connected electrical systems.
The S200 M UC range is designed specifically for flexible AC and DC applications and combines high short-circuit breaking performance with broad system compatibility. The S203M-C40UC provides a practical solution for engineers requiring a 40 A three-pole protective device with C-curve characteristics, while compatibility with System pro M compact® accessories simplifies integration into modular electrical installations.
Typical Applications
- Industrial AC and DC electrical distribution systems.
- Machinery and automation control panels.
- Electrical distribution boards.
- Industrial power and auxiliary circuits.
- Motor and equipment supply circuits with moderate inrush currents.
- Transportation and traction-related electrical systems.
- OEM machinery and industrial equipment.
Technical Specifications
| Series | S200 M UC / System pro M compact® |
|---|---|
| ABB order code | 2CDS273061R0404 |
| Product type | Miniature circuit breaker (MCB) |
| Rated current | 40 A |
| Number of poles | 3 |
| Tripping characteristic | Type C |
| Short-circuit breaking capacity | 10 kA |
| Rated voltage | 400 V AC / 400 V DC |
| Application | AC/DC circuit protection |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2 |
| Mounting type | DIN rail |
| Protection rating | IP20 |
| Operating temperature | -25 to +55 °C |
| Electrical endurance | 20,000 cycles |
| Weight | approx. 0.375 kg |
| EAN | 4013614435270 |
Frequently Asked Questions
What is the ABB S203M-C40UC used for?
The ABB S203M-C40UC is a three-pole miniature circuit breaker designed to protect AC and DC electrical circuits against overload and short-circuit currents.
What is the rated current of the S203M-C40UC?
The S203M-C40UC has a rated current of 40 A.
What tripping characteristic does this MCB use?
The S203M-C40UC uses a Type C tripping characteristic, making it suitable for circuits that can experience moderate inrush currents during normal operation.
What is the short-circuit breaking capacity?
The ABB S203M-C40UC has a 10 kA short-circuit breaking capacity, providing robust protection against high fault currents.
Can the ABB S203M-C40UC be used for DC circuits?
Yes. The ABB S200 M UC series is designed for flexible AC and DC applications, and the S203M-C40UC is suitable for appropriately rated DC circuit protection.
Trusted ABB Circuit Protection
ABB System pro M compact® miniature circuit breakers provide dependable circuit protection for industrial, automation and infrastructure applications, combining robust electrical performance with modular installation and flexible AC/DC operation.
