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ABB S203M-D1NA MCB – S200M – 3P+N – D – 1A
ABB S203M-D1NA 3+NP 1 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-D1NA Miniature Circuit Breaker?
The ABB S203M-D1NA is a high quality 3+NP miniature circuit breaker (MCB) designed for reliable overload and short circuit protection in residential, commercial and industrial electrical installations. As part of the proven ABB System pro M compact S200M series, it provides dependable circuit protection in a compact DIN rail mounted format.
This 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 suitable for circuits with high inrush currents, making it ideal for transformers, motors, solenoids and other inductive loads.
With a 1 A rated current, 3+NP configuration and 10 kA short circuit capacity, the ABB S203M-D1NA provides robust protection for three-phase and neutral circuits. The switched neutral design supports safe isolation and reliable operation within control panels, distribution boards and automation systems.
Key Advantages
- Compact 3+NP miniature circuit breaker for low voltage installations.
- 1 A rated current for low current protection circuits.
- D characteristic tripping curve for circuits with high inrush currents.
- 10 kA short circuit capacity for dependable fault protection.
- Part of the trusted ABB System pro M compact S200M range.
- DIN rail mounting for quick installation inside electrical panels.
Key Features
- ABB S200M miniature circuit breaker series.
- 1 A rated current.
- 3+NP pole configuration.
- D characteristic tripping curve.
- 10 kA rated short circuit capacity.
- Delayed thermal overload protection.
- Electromechanical short circuit protection.
- 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 devices designed to protect electrical circuits from overload and short circuit conditions. They are widely used across residential, commercial and industrial applications where reliable low voltage protection is required.
The D curve characteristic of the S203M-D1NA provides a higher instantaneous trip threshold than B or C curve devices, making it suitable for circuits where short duration start-up currents are expected. This helps reduce nuisance tripping whilst maintaining effective protection under fault conditions.
Typical Applications
- Industrial control panels.
- Three-phase and neutral distribution boards.
- Automation and control circuits.
- Transformer protection circuits.
- Motor and solenoid circuits.
- Commercial and industrial low voltage installations.
Technical Specifications
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| Phase | Three Phase | |
|---|---|---|
| Current | 1 A | |
| Poles | 3-pole + N | |
| Device Type | MCB | |
| Trip Curve | D curve | |
| Breaking Capacity | 10 kA | |
| Manufacturer | ABB | |
| Series | S200M | |
| Model | S203M-D1NA | |
| Product type | Miniature circuit breaker (MCB) | |
| Product ID | 2CDS273103R0011 | |
| EAN | 4016779663328 | |
| Rated current | 1 A | |
| Number of poles | 3+NP | |
| Tripping characteristic | D | |
| Rated short circuit capacity | 10 kA | |
| Rated operational voltage | 400 V AC | |
| Rated insulation voltage | 440 V | |
| Frequency | 50 / 60 Hz | |
| Protection rating | IP20 | |
| Mounting type | DIN rail | |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2 | |
| Typical applications | Distribution boards, control panels, automation systems and inductive load circuits |
Frequently Asked Questions
What is the ABB S203M-D1NA used for?
The S203M-D1NA is used to protect low current three-phase and neutral electrical circuits against overloads and short circuits.
What current rating does this MCB have?
The ABB S203M-D1NA has a 1 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 inductive loads such as motors, transformers and solenoids.
How many poles does the S203M-D1NA have?
This model has a 3+NP configuration, providing protection for three phases with a switched neutral pole.
Where is the S203M-D1NA typically installed?
It is typically installed on a DIN rail inside distribution boards, control panels and industrial electrical enclosures.
Trusted by Electrical Professionals Worldwide
ABB S200M miniature circuit breakers are trusted by electricians, panel builders and industrial engineers for dependable protection, compact installation and long-term reliability in low voltage electrical systems.
