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2CDS273445R0081 ABB S203MT-D8 MCB 10kA 3P Type D 8A
ABB S203MT-D8 is an 8 A three-pole D-characteristic miniature circuit breaker with 10 kA breaking capacity for reliable overload and short-circuit protection in demanding industrial and railway electrical applications.
£141.32
Why Choose the ABB S203MT-D8 Miniature Circuit Breaker?
The ABB S203MT-D8 is a robust three-pole miniature circuit breaker (MCB) designed to provide reliable overload and short-circuit protection in demanding electrical installations. As part of the specialised ABB S200 MT series, it is particularly suited to industrial and railway applications where dependable circuit protection, mechanical durability and reliable operation are essential.
This miniature circuit breaker combines an 8 A rated current, D tripping characteristic and 10 kA short-circuit breaking capacity. The D characteristic accommodates high transient starting currents, making the S203MT-D8 particularly suitable for circuits supplying inductive equipment such as motors, transformers and other loads with substantial inrush current.
With its three-pole configuration and compact modular construction, the S203MT-D8 provides coordinated protection across three conductors and is designed for straightforward DIN-rail installation in distribution boards, control panels and industrial switchgear. ABB order code 2CDS273445R0081 uniquely identifies this 8 A D-characteristic model.
Key Advantages
- Reliable overload and short-circuit protection for demanding electrical circuits.
- 8 A rated current for industrial control and equipment circuits.
- Three-pole configuration provides coordinated multi-pole protection.
- D tripping characteristic suited to loads with high starting and inrush currents.
- 10 kA breaking capacity provides robust fault-current interruption.
- Designed for demanding industrial and railway applications.
- Compact DIN-rail format simplifies installation in control panels and switchgear.
Key Features
- ABB S200 MT series miniature circuit breaker.
- 8 A rated current.
- 3-pole (3P) configuration.
- D characteristic tripping curve.
- 10 kA short-circuit breaking capacity.
- Thermal-magnetic protection against overload and short-circuit conditions.
- IP20 degree of protection.
- 50 / 60 Hz rated frequency.
- DIN-rail modular construction with a width of three module units.
- ABB order code 2CDS273445R0081.
Reliable Circuit Protection for High-Inrush Industrial Loads
Miniature circuit breakers such as the ABB S203MT-D8 protect electrical wiring and connected equipment by automatically interrupting the circuit when excessive current occurs. Thermal operation responds to sustained overload conditions, while magnetic operation provides rapid disconnection during severe short-circuit faults, helping protect conductors and equipment against damage.
The D characteristic is particularly useful where equipment produces substantial but legitimate transient currents during energisation. This makes the S203MT-D8 a practical choice for motors, transformers and other inductive loads, while the S200 MT platform is engineered to meet the demanding requirements encountered in industrial and railway electrical installations.
Typical Applications
- Industrial electrical distribution systems.
- Railway and traction-related electrical installations.
- Motor circuits with high starting currents.
- Transformer supply and protection circuits.
- Industrial machinery and automation equipment.
- Control panels and electrical switchboards.
- Circuits supplying inductive loads with substantial inrush currents.
Technical Specifications
| Series | S200 MT |
|---|---|
| ABB order code | 2CDS273445R0081 |
| EAN | 4016779125284 |
| Product type | Miniature circuit breaker (MCB) |
| Product group | DC / Traction MCB |
| Number of poles | 3 |
| Rated current | 8 A |
| Tripping characteristic | D |
| Rated short-circuit breaking capacity | 10 kA |
| Rated frequency | 50 / 60 Hz |
| Protection principle | Thermal-magnetic |
| Protection rating | IP20 |
| Mounting type | DIN rail |
| Width | 3 module units / approx. 52 mm |
| Unit weight | approx. 0.375 kg |
| Pack quantity | 1 piece |
Frequently Asked Questions
What is the ABB S203MT-D8 used for?
The ABB S203MT-D8 provides overload and short-circuit protection for industrial and railway electrical circuits, particularly applications involving loads with high starting currents.
What is the rated current of the S203MT-D8?
The S203MT-D8 has a rated current of 8 A.
What does the D characteristic mean?
The D tripping characteristic is suited to circuits containing equipment with high transient starting or inrush currents, such as motors and transformers.
What is the breaking capacity of the ABB S203MT-D8?
The S203MT-D8 has a rated short-circuit breaking capacity of 10 kA.
How many poles does the S203MT-D8 have?
The S203MT-D8 is a three-pole (3P) miniature circuit breaker designed to provide coordinated protection across three conductors.
Trusted ABB Circuit Protection
ABB S200 MT miniature circuit breakers provide dependable modular circuit protection for demanding industrial and railway installations, combining robust overload and short-circuit protection with characteristics suited to specialised electrical loads.
