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ABB S203MT-K8H01 MCB – S200M – 3P – K – 8A
ABB S203MT-K8H01 three pole 8A K characteristic miniature circuit breaker designed for railway, traction and industrial electrical protection with 10 kA short circuit capacity.
Why Choose the ABB S203MT-K8H01 Miniature Circuit Breaker?
The ABB S203MT-K8H01 is a reliable 3-pole miniature circuit breaker (MCB) designed for overload and short circuit protection in railway, traction and industrial electrical systems. Part of the ABB S200MT miniature circuit breaker series, it is built for demanding installations where dependable protection, compact design and long service life are essential.
With a K characteristic tripping curve, the S203MT-K8H01 is suitable for circuits with higher inrush currents, including motors, transformers, solenoids and inductive loads. Its thermal and electromagnetic trip mechanisms help protect electrical equipment against overloads and fault currents while supporting reliable operation in industrial control systems.
Featuring an 8 A rated current, 3-pole configuration and 10 kA rated short circuit capacity, the ABB S203MT-K8H01 is ideal for railway vehicles, control panels, OEM machinery and industrial distribution systems requiring dependable three-phase circuit protection.
Key Advantages
- High quality ABB miniature circuit breaker for railway and industrial applications.
- 3-pole MCB for three-phase circuit protection.
- 8 A rated current for control and distribution circuits.
- K characteristic tripping curve suitable for inductive loads and higher inrush currents.
- 10 kA short circuit breaking capacity for dependable fault protection.
- Compact DIN rail format for distribution boards, machine cabinets and control panels.
Key Features
- ABB S200MT series.
- Model: S203MT-K8H01.
- Rated current: 8 A.
- K characteristic tripping curve.
- 3 protected poles (3P).
- 10 kA rated short circuit capacity.
- Thermal overload and electromagnetic short circuit protection.
- DIN rail mounting for modular electrical installations.
Reliable Protection for Railway and Industrial Installations
Miniature circuit breakers such as the ABB S203MT-K8H01 protect electrical installations by disconnecting circuits during overload or short circuit conditions. The delayed thermal trip mechanism responds to overloads, while the electromagnetic trip mechanism reacts quickly to short circuit faults.
The K curve characteristic makes this MCB a practical choice for circuits where normal operation may involve short-duration inrush currents. This helps deliver dependable protection while reducing the risk of nuisance tripping in suitable inductive load applications.
Typical Applications
- Railway and rolling stock electrical systems.
- Industrial control panels and automation systems.
- Motor and transformer protection circuits.
- OEM machinery and panel building.
- Three-phase distribution boards.
- Inductive load and control circuit protection.
Technical Specifications
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| Current | 8 A | |
|---|---|---|
| Phase | Three Phase | |
| Poles | 3-pole | |
| Device Type | MCB | |
| Trip Curve | K curve | |
| Breaking Capacity | 10 kA | |
| Manufacturer | ABB | |
| Series | S200MT | |
| Model | S203MT-K8H01 | |
| Alternative model | S203MT-K8 | |
| Product type | Miniature Circuit Breaker (MCB) | |
| Rated current | 8 A | |
| Tripping characteristic | K | |
| Number of poles | 3 | |
| Rated operational voltage | Up to 400 V AC | |
| Rated insulation voltage | 440 V | |
| Frequency | 50 / 60 Hz | |
| Rated short circuit capacity | 10 kA | |
| Product ID | 2CDS273006R0407 | |
| EAN | 4016779770200 | |
| Protection rating | IP20 | |
| Mounting type | DIN rail | |
| Dimensions (H × W × D) | approx. 88 × 52.5 × 69 mm | |
| Weight | approx. 0.375 kg |
Frequently Asked Questions
What is the ABB S203MT-K8H01 used for?
The ABB S203MT-K8H01 is used to protect three-phase electrical circuits against overloads and short circuits in railway, industrial and automation applications.
What is the rated current of this MCB?
This miniature circuit breaker has an 8 A rated current.
What does the K tripping curve mean?
The K characteristic is designed for circuits with higher inrush currents, making it suitable for inductive loads such as motors, transformers and solenoids.
How many poles does the S203MT-K8H01 have?
The ABB S203MT-K8H01 has a 3-pole (3P) configuration for three-phase circuit protection.
How is this circuit breaker installed?
It is designed for standard DIN rail mounting inside electrical distribution boards, control panels and machine cabinets.
Trusted by Railway and Industrial Engineers Worldwide
ABB S200MT miniature circuit breakers are widely used by panel builders, OEMs and railway engineers for reliable protection of electrical circuits in demanding transport and industrial environments.
