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ABB S202MT-K4H01 MCB – S200M – 2P – K – 4A
ABB S202MT-K4H01 two-pole 4 A miniature circuit breaker with K tripping characteristic and 10 kA short circuit capacity for railway, traction and industrial electrical protection.
Why Choose the ABB S202MT-K4H01 Miniature Circuit Breaker?
The ABB S202MT-K4H01 is a premium two-pole miniature circuit breaker (MCB) engineered for reliable protection in railway, traction and industrial electrical applications. As part of the proven ABB S200MT series, it delivers dependable overload and short circuit protection for demanding control, signalling and automation systems.
Featuring a K tripping characteristic, this circuit breaker is specifically designed for circuits with higher inrush currents, making it ideal for motors, transformers, solenoids and other inductive loads. Its advanced current limiting design helps reduce fault energy, protecting connected equipment and improving overall system reliability.
With a 4 A rated current, two-pole configuration and 10 kA short circuit breaking capacity, the S202MT-K4H01 is ideal for DIN rail installation in railway vehicles, industrial control panels, machinery and specialist electrical installations.
Key Advantages
- Two-pole miniature circuit breaker for railway and industrial applications.
- 4 A rated current with K tripping characteristic.
- 10 kA short circuit capacity for dependable fault protection.
- Designed for circuits with higher inrush currents.
- Current limiting construction helps minimise equipment damage.
- Compatible with the ABB System pro M Compact accessory range.
Key Features
- ABB S200MT miniature circuit breaker series.
- 4 A rated current.
- Two protected poles.
- K tripping characteristic for inductive loads.
- 10 kA rated short circuit capacity.
- Thermal magnetic protection against overloads and short circuits.
- Suitable for 50 / 60 Hz electrical systems.
- 35 mm DIN rail mounting with screw terminals.
Reliable Protection for Railway and Industrial Systems
The ABB S202MT-K4H01 combines thermal and electromagnetic tripping mechanisms to provide dependable protection against overloads and short circuits. Its K characteristic makes it particularly suitable for circuits with elevated inrush currents while maintaining rapid fault disconnection during short circuit conditions.
Designed specifically for railway and industrial environments, the S200MT range offers high current limiting performance, compact dimensions and compatibility with ABB System pro M Compact accessories, making it suitable for both new installations and maintenance projects.
Typical Applications
- Railway and rolling stock electrical systems.
- Traction control equipment.
- Industrial control panels.
- Motor and transformer protection.
- Automation and machine building.
- Control and signalling circuits.
Technical Specifications
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| Current | 4 A | |
|---|---|---|
| Poles | 2-pole | |
| Device Type | MCB | |
| Trip Curve | K curve | |
| Breaking Capacity | 10 kA | |
| Manufacturer | ABB | |
| Series | S200MT | |
| Model | S202MT-K4H01 | |
| Manufacturer Part Number | 2CDS272445R0337 | |
| Product type | Miniature Circuit Breaker (MCB) | |
| Rated current | 4 A | |
| Number of poles | 2 | |
| Tripping characteristic | K | |
| Rated operational voltage | 400 V AC | |
| Rated insulation voltage | 440 V | |
| Frequency | 50 / 60 Hz | |
| Rated short circuit capacity | 10 kA | |
| Protection rating | IP20 (IP40 when installed within an enclosure) | |
| Mounting type | 35 mm DIN rail | |
| Terminal type | Screw terminals | |
| Dimensions (H × W × D) | 88 × 35 × 69 mm | |
| Weight | Approx. 0.25 kg |
Frequently Asked Questions
What is the ABB S202MT-K4H01 used for?
It protects two-pole electrical circuits against overloads and short circuits in railway, industrial and automation applications.
What does the K tripping characteristic provide?
The K characteristic is designed for circuits with higher inrush currents, making it suitable for motors, transformers, coils and other inductive loads.
How many poles does this circuit breaker have?
The ABB S202MT-K4H01 is a two-pole miniature circuit breaker.
What is the rated current?
This miniature circuit breaker has a 4 A rated current.
Where can the S202MT-K4H01 be installed?
It is designed for installation on a standard 35 mm DIN rail inside suitable electrical distribution boards, control panels and railway equipment.
Trusted for Railway and Industrial Protection
ABB S200MT miniature circuit breakers are trusted worldwide by railway manufacturers, OEMs and industrial engineers for dependable circuit protection, compact installation and long-term reliability.
