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ABB S203M-D3NA MCB – S200M – 3P+N – D – 3A
ABB S203M-D3NA 3+NP 3 A miniature circuit breaker with D characteristic tripping curve and 10 kA short circuit capacity for residential, commercial and industrial circuit protection.
£150.39
Why Choose the ABB S203M-D3NA Miniature Circuit Breaker?
The ABB S203M-D3NA is a premium 3+NP miniature circuit breaker (MCB) engineered to provide reliable overload and short circuit protection for residential, commercial and industrial electrical installations. As part of the trusted ABB System pro M compact S200M series, it delivers dependable low voltage circuit protection with a compact DIN rail mounted design.
The circuit breaker combines a delayed thermal tripping mechanism for overload protection with an electromechanical tripping mechanism for short circuit protection. Its D characteristic tripping curve is specifically designed for circuits with high inrush currents, making it ideal for motors, transformers, solenoids and other inductive electrical loads.
With a 3 A rated current, 3+NP configuration and 10 kA rated short circuit capacity, the ABB S203M-D3NA provides dependable protection for three-phase and neutral circuits. The switched neutral pole enables safe isolation whilst maintaining compact installation inside distribution boards and control panels.
Key Advantages
- Compact 3+NP miniature circuit breaker for professional installations.
- 3 A rated current for low current protection applications.
- D characteristic tripping curve for high inrush current loads.
- 10 kA rated short circuit capacity for dependable fault protection.
- Compatible with ABB System pro M compact accessories.
- DIN rail mounting for quick installation and maintenance.
Key Features
- ABB System pro M compact S200M series.
- 3 A rated current.
- 3+NP pole configuration.
- D characteristic tripping curve.
- 10 kA rated short circuit capacity.
- Thermal overload and electromechanical short circuit protection.
- Current limiting construction.
- Suitable for residential, commercial and industrial applications.
Reliable Circuit Protection for Low Voltage Installations
ABB System pro M compact S200M miniature circuit breakers are current limiting protective devices designed to safeguard electrical circuits against overload and short circuit conditions. They comply with both IEC/EN 60898-1 and IEC/EN 60947-2, making them suitable for residential, commercial and industrial applications.
The D curve characteristic of the S203M-D3NA provides a higher magnetic trip threshold than B or C curve devices, allowing temporary starting currents to pass without nuisance tripping whilst maintaining rapid protection during genuine fault conditions.
Typical Applications
- Industrial control panels.
- Three-phase distribution boards.
- Motor starter circuits.
- Transformer protection.
- Automation and machinery.
- Commercial and industrial electrical installations.
Technical Specifications
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| Phase | Three Phase | |
|---|---|---|
| Current | 3 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-D3NA | |
| Product ID | 2CDS273103R0031 | |
| EAN | 4016779663359 | |
| Product type | Miniature circuit breaker (MCB) | |
| Rated current | 3 A | |
| Number of poles | 3+NP | |
| Number of protected poles | 3 | |
| Tripping characteristic | D | |
| Rated short circuit capacity | 10 kA | |
| Rated ultimate short circuit capacity | 25 kA at 230 V AC / 15 kA at 440 V AC | |
| Rated service short circuit capacity | 7.5 kA | |
| Rated operational voltage | 400 V AC | |
| Rated insulation voltage | 440 V | |
| Rated impulse withstand voltage | 4 kV | |
| Frequency | 50 / 60 Hz | |
| Protection rating | IP20 | |
| Mounting type | DIN rail | |
| Current limiting class | Class 3 |
Frequently Asked Questions
What is the ABB S203M-D3NA used for?
The S203M-D3NA protects three-phase and neutral electrical circuits against overloads and short circuits in residential, commercial and industrial installations.
What current rating does this circuit breaker have?
The ABB S203M-D3NA has a 3 A rated current.
What does the D tripping characteristic mean?
The D curve is designed for circuits with high inrush currents, making it suitable for motors, transformers and other inductive loads.
How many poles does the S203M-D3NA have?
This model features a 3+NP configuration, providing protection for three phases together with a switched neutral.
Where is the S203M-D3NA typically installed?
It is designed for DIN rail mounting inside distribution boards, switchboards and industrial control panels.
Trusted by Electrical Professionals Worldwide
ABB System pro M compact miniature circuit breakers are trusted worldwide by electricians, panel builders and industrial engineers for dependable protection, compact installation and long service life.
