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ABB S203M-D0.5NA MCB – S200M – 3P+N – D – 0.5A
ABB S203M-D0.5NA miniature circuit breaker featuring a 0.5 A rating, 3P+N configuration, D characteristic and 10 kA breaking capacity for industrial and commercial circuit protection.
£150.39
Why Choose the ABB S203M-D0.5NA Miniature Circuit Breaker?
The ABB S203M-D0.5NA is a high performance miniature circuit breaker (MCB) from the trusted ABB System pro M Compact S200M series, engineered to provide dependable overload and short circuit protection for industrial, commercial and specialist electrical installations. Featuring a D characteristic trip curve, it is particularly suitable for circuits with high inrush currents.
The S200M range incorporates both delayed thermal overload protection and fast electromechanical short circuit protection. Its current limiting design helps reduce fault energy, protecting valuable electrical equipment whilst improving overall system reliability.
With a rated current of 0.5 A, a 3P+N configuration and a 10 kA breaking capacity, the S203M-D0.5NA is ideal for protecting low-current three-phase control circuits, automation equipment and specialist machinery requiring neutral switching.
Key Advantages
- High quality miniature circuit breaker for precision circuit protection.
- 0.5 A rated current for low-current industrial applications.
- D characteristic trip curve designed for circuits with higher inrush currents.
- 3P+N configuration with three protected poles and switched neutral.
- 10 kA breaking capacity for reliable short circuit protection.
- DIN rail mounting for quick installation in control panels and distribution boards.
Key Features
- ABB System pro M Compact S200M series.
- 0.5 A rated current.
- D curve tripping characteristic.
- 3P+N pole configuration.
- 10 kA rated short circuit breaking capacity.
- Thermal overload and electromechanical short circuit protection.
- Current limiting design.
- Compatible with ABB auxiliary contacts and signalling accessories.
Reliable Protection for Specialist Low-Current Circuits
The ABB S203M-D0.5NA automatically disconnects electrical circuits when overloads or short circuits occur. Its thermal tripping mechanism protects against prolonged overload conditions, while the electromechanical trip responds rapidly to fault currents, helping safeguard sensitive electrical equipment.
The D curve characteristic makes this miniature circuit breaker suitable for low-current circuits with higher inrush currents, including control transformers, automation equipment and specialist industrial applications requiring dependable protection.
Typical Applications
- Industrial control panels.
- Automation and PLC systems.
- Control transformer protection.
- Instrumentation circuits.
- OEM machinery.
- Low-current three-phase installations.
Technical Specifications
Tick the specs you need, then view products that match.
| Phase | Three Phase | |
|---|---|---|
| Current | 0.5 A | |
| Poles | 3-pole + N | |
| Device Type | MCB | |
| Trip Curve | D curve | |
| Breaking Capacity | 10 kA | |
| Manufacturer | ABB | |
| Series | System pro M Compact S200M | |
| Model | S203M-D0.5NA | |
| Product ID | 2CDS273103R0981 | |
| EAN | 4016779663311 | |
| Product type | Miniature circuit breaker (MCB) | |
| Rated current | 0.5 A | |
| Number of protected poles | 3 | |
| Neutral pole | Switched neutral | |
| Pole configuration | 3P+N | |
| Trip characteristic | D | |
| Rated operational voltage | 400 V AC | |
| Rated insulation voltage | 440 V | |
| Rated impulse withstand voltage | 4 kV | |
| Frequency | 50 / 60 Hz | |
| Breaking capacity | 10 kA | |
| Protection rating | IP20 | |
| Mounting type | DIN rail | |
| Width | 4 modular spacings | |
| Built-in depth | 69 mm | |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2 |
Frequently Asked Questions
What is the ABB S203M-D0.5NA used for?
It provides overload and short circuit protection for low-current three-phase electrical circuits used in industrial and automation applications.
What does the D trip characteristic mean?
The D curve is intended for circuits with higher inrush currents, such as transformer, motor and inductive load applications.
What is the rated current of this miniature circuit breaker?
The ABB S203M-D0.5NA has a rated current of 0.5 A.
What does the 3P+N configuration provide?
It provides three protected phase poles together with a switched neutral pole for three-phase electrical installations.
How is the ABB S203M-D0.5NA installed?
The device is designed for DIN rail mounting inside electrical control panels and distribution boards.
Trusted by Electrical Professionals Worldwide
ABB System pro M Compact miniature circuit breakers are trusted by electrical engineers, panel builders and machine manufacturers for reliable protection across industrial and commercial electrical installations.
