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2CDS273445R0205 ABB S203MT-B20 20A 3P Type B 10kA Miniature Circuit Breaker
ABB S203MT-B20 is a 20 A three-pole Type B miniature circuit breaker with 10 kA breaking capacity, designed for reliable circuit protection in demanding industrial, DC and traction applications.
£88.95
Why Choose the ABB S203MT-B20 Miniature Circuit Breaker?
The ABB S203MT-B20 is a high-performance three-pole miniature circuit breaker (MCB) designed to provide reliable overload and short-circuit protection in demanding electrical systems. As part of the ABB S200 MT series, it is particularly suited to industrial, DC and traction electrical installations requiring dependable multi-pole circuit protection.
This miniature circuit breaker combines a 20 A rated current, Type B tripping characteristic and 10 kA breaking capacity. The B characteristic provides sensitive protection for circuits with relatively low inrush currents, helping safeguard conductors, control equipment and connected electrical loads against overcurrent conditions.
With three protected poles and a compact modular design, the S203MT-B20 provides coordinated protection for three-pole circuits. Its DIN-rail format makes it suitable for distribution boards, control cabinets, traction equipment and industrial electrical panels where reliable protection and efficient use of installation space are required.
Key Advantages
- High-performance three-pole miniature circuit breaker for demanding electrical applications.
- 20 A rated current for dependable circuit protection.
- Type B tripping characteristic suitable for circuits with relatively low inrush currents.
- 10 kA rated breaking capacity for effective short-circuit protection.
- Designed for demanding industrial, DC and traction applications.
- Compact modular construction for straightforward DIN-rail installation.
Key Features
- ABB S200 MT series.
- Three-pole (3P) configuration.
- 20 A rated current.
- Type B tripping characteristic.
- 10 kA breaking capacity.
- Thermal-magnetic overload and short-circuit protection.
- Designed for demanding DC and traction circuit-protection applications.
- Suitable for circuits with relatively low starting and inrush currents.
- Compact DIN-rail format for modular electrical installations.
Reliable Protection for Industrial and Traction Circuits
Miniature circuit breakers such as the ABB S203MT-B20 automatically disconnect a circuit when excessive current occurs due to an overload or short circuit. This helps protect conductors and connected equipment while reducing the risk of damage caused by electrical faults.
The S200 MT range is designed for demanding electrical applications, including industrial and traction systems. The Type B operating characteristic makes the S203MT-B20 particularly suitable for circuits with relatively low inrush currents, combining sensitive overcurrent protection with robust short-circuit interruption.
Typical Applications
- DC and traction electrical systems.
- Rolling-stock electrical installations.
- Industrial control and distribution panels.
- Machinery and automation systems.
- Control and auxiliary circuits.
- Circuits with relatively low inrush currents.
Technical Specifications
| Series | S200 MT |
|---|---|
| ABB order code | 2CDS273445R0205 |
| Product group | DC / Traction MCB |
| Product type | Miniature circuit breaker (MCB) |
| Number of poles | 3 |
| Rated current | 20 A |
| Tripping characteristic | Type B |
| Rated breaking capacity | 10 kA |
| Mounting type | DIN rail |
Frequently Asked Questions
What is the ABB S203MT-B20 used for?
The S203MT-B20 is a three-pole miniature circuit breaker used to protect electrical circuits against overloads and short circuits in demanding industrial, DC and traction applications.
What is the rated current of the S203MT-B20?
The ABB S203MT-B20 has a rated current of 20 A.
What does the Type B characteristic mean?
The Type B tripping characteristic provides sensitive magnetic protection and is generally suited to circuits with relatively low inrush currents.
What is the breaking capacity of this circuit breaker?
The S203MT-B20 has a rated breaking capacity of 10 kA.
Where is the ABB S203MT-B20 typically used?
The S203MT-B20 is suitable for demanding electrical installations including industrial control systems, machinery, rolling stock and traction applications.
Trusted ABB Circuit Protection
ABB S200 MT miniature circuit breakers provide robust overload and short-circuit protection for demanding industrial and traction applications, combining compact modular construction with dependable electrical performance.
