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ABB S203MT-C40 MCB – S200M – 3P – C – 40A
ABB S203MT-C40 miniature circuit breaker, a 3-pole 40 A C curve MCB from the S200MT range with 10 kA breaking capacity for traction, railway and industrial circuit protection.
£108.30
Why Choose the ABB S203MT-C40 Miniature Circuit Breaker?
The ABB S203MT-C40 is a high-performance 3-pole miniature circuit breaker (MCB) designed to provide reliable overload and short-circuit protection in demanding electrical installations. Part of the specialist ABB S200MT range, it is developed for traction, railway and industrial applications where dependable modular protection is essential.
With a C tripping characteristic, the S203MT-C40 is suitable for general-purpose circuits with moderate inrush currents. This makes it a practical choice for distribution boards, control panels, machine circuits and industrial electrical systems requiring consistent and reliable protection.
Rated at 40 A with a 3-pole configuration and 10 kA short-circuit breaking capacity, the ABB S203MT-C40 provides robust circuit protection in a compact DIN rail format. Its current-limiting design helps reduce fault energy and supports safe operation in demanding environments.
Key Advantages
- 3-pole miniature circuit breaker for three-phase circuit protection.
- 40 A rated current suitable for industrial distribution circuits.
- C curve tripping characteristic for circuits with moderate inrush currents.
- 10 kA breaking capacity for demanding electrical installations.
- Designed for traction, railway and industrial applications.
- Compatible with ABB System pro M compact accessories.
Key Features
- ABB S203MT-C40 miniature circuit breaker.
- S200MT series modular protection device.
- 3 protected poles.
- 40 A rated current.
- C characteristic trip curve.
- 10 kA rated short-circuit capacity.
- Thermal-magnetic tripping for overload and short-circuit protection.
- DIN rail mounting for panel and distribution board installation.
Reliable Protection for Three-Phase Circuits
Miniature circuit breakers such as the ABB S203MT-C40 automatically disconnect electrical circuits when excessive current is detected. The delayed thermal tripping mechanism provides overload protection, while the electromechanical tripping mechanism responds rapidly to short-circuit faults.
The S200MT range is designed for demanding transport and industrial environments. Its current-limiting performance, robust construction and compatibility with ABB modular accessories make the S203MT-C40 a dependable choice for panel builders, railway engineers and industrial electrical contractors.
Typical Applications
- Railway and traction electrical systems.
- Three-phase distribution boards.
- Industrial control panels and switchboards.
- Machine building and OEM electrical equipment.
- Commercial and industrial low-voltage installations.
- Power distribution circuits with moderate inrush currents.
Technical Specifications
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| Current | 40 A | |
|---|---|---|
| Phase | Three Phase | |
| Poles | 3-pole | |
| Device Type | MCB | |
| Trip Curve | C curve | |
| Breaking Capacity | 10 kA | |
| Manufacturer | ABB | |
| Series | S200MT | |
| Model | S203MT-C40 | |
| Product ID | 2CDS273445R0404 | |
| EAN | 4016779124065 | |
| Product type | Miniature circuit breaker | |
| Number of poles | 3P | |
| Protected poles | 3 | |
| Rated current | 40 A | |
| Tripping characteristic | C curve | |
| Rated short-circuit capacity | 10 kA | |
| Rated operational voltage | 400 V AC | |
| Maximum operational voltage | 440 V AC | |
| Rated insulation voltage | 440 V | |
| Rated impulse withstand voltage | 4 kV | |
| Frequency | 50 / 60 Hz | |
| Protection rating | IP20 | |
| Pollution degree | 3 | |
| Overvoltage category | III | |
| Mounting type | DIN rail | |
| Width | 3 modules | |
| Dimensions (H × W × D) | approx. 88 × 52.5 × 69 mm | |
| HS Code | 85362010 | |
| Country of Manufacture | Germany |
Frequently Asked Questions
What is the ABB S203MT-C40 used for?
The ABB S203MT-C40 is used to protect three-phase electrical circuits against overloads and short circuits in traction, railway, industrial and commercial installations.
What is the rated current of the ABB S203MT-C40?
The S203MT-C40 has a rated current of 40 A.
How many poles does the S203MT-C40 have?
This miniature circuit breaker has a 3-pole configuration with three protected poles.
What does the C curve mean on this breaker?
The C curve tripping characteristic is designed for circuits with moderate inrush currents, making it suitable for general distribution, control panel and industrial applications.
Where is the ABB S203MT-C40 typically installed?
It is typically installed on a DIN rail inside distribution boards, control panels, switchboards or industrial electrical enclosures.
Trusted by Electrical Engineers Worldwide
ABB S200MT miniature circuit breakers are trusted by railway engineers, panel builders and electrical contractors for reliable modular circuit protection in demanding industrial and transport applications.
