Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
ABB S203-K1.6NA MCB – S200 – 3P+N – K – 1.6A
ABB S203-K1.6NA System pro M Compact miniature circuit breaker with 3P+N configuration, 1.6 A rated current, K tripping characteristic and 6 kA breaking capacity for industrial circuit protection.
£110.41
Why Choose the ABB S203-K1.6NA Miniature Circuit Breaker?
The ABB S203-K1.6NA is a premium 3P+N miniature circuit breaker (MCB) from the trusted ABB System pro M Compact S200 series, engineered to provide dependable overload and short circuit protection for industrial, commercial and OEM electrical installations. Featuring a K tripping characteristic, this breaker is specifically designed for circuits with higher inrush currents, making it ideal for protecting motors, transformers, control equipment and other inductive loads.
Built using ABB's advanced thermal and electromagnetic tripping technology, the S203-K1.6NA delivers reliable circuit protection while providing excellent current limiting performance. Its compact DIN rail mounted design enables straightforward installation within switchboards, distribution boards and industrial control panels.
With a 1.6 A rated current, 3P+N configuration and a 6 kA breaking capacity, the ABB S203-K1.6NA offers dependable protection for three-phase electrical systems requiring a switched neutral, ensuring reliable operation in demanding industrial environments.
Key Advantages
- 3P+N miniature circuit breaker for three-phase systems with switched neutral.
- 1.6 A rated current for specialised low-current protection.
- K characteristic trip curve designed for circuits with higher starting currents.
- 6 kA breaking capacity for dependable fault interruption.
- Compact DIN rail mounting for simple installation.
- Compatible with ABB S200 series accessories for expanded functionality.
Key Features
- ABB System pro M Compact S200 series.
- Model: S203-K1.6NA.
- Rated current: 1.6 A.
- 3P+N pole configuration.
- K tripping characteristic.
- 6 kA rated short circuit capacity.
- Thermal overload and electromagnetic short circuit protection.
- Current limiting design.
- DIN rail mounting.
Reliable Protection for Industrial Power Systems
The ABB S203-K1.6NA automatically disconnects electrical circuits during overload and short circuit conditions, helping protect wiring, machinery and connected equipment from damage while maintaining electrical safety and system reliability.
Its K characteristic magnetic trip curve is designed for circuits with elevated starting currents, making it particularly suitable for motors, transformers, solenoids and other inductive loads that require higher magnetic trip thresholds than standard C curve devices.
Typical Applications
- Industrial motor circuits.
- Machine building and OEM equipment.
- Industrial control panels.
- Transformer protection.
- Automation systems.
- Commercial and industrial power distribution.
Technical Specifications
Tick the specs you need, then view products that match.
| Phase | Three Phase | |
|---|---|---|
| Current | 1.6 A | |
| Poles | 3-pole + N | |
| Device Type | MCB | |
| Trip Curve | K curve | |
| Breaking Capacity | 6 kA | |
| Manufacturer | ABB | |
| Series | System pro M Compact S200 | |
| Model | S203-K1.6NA | |
| Product ID | 2CDS253103R0257 | |
| Product type | Miniature Circuit Breaker (MCB) | |
| Rated current | 1.6 A | |
| Tripping characteristic | K | |
| Number of poles | 3P+N | |
| Rated operational voltage | 400 V AC | |
| Maximum operational voltage | 440 V AC | |
| Rated frequency | 50 / 60 Hz | |
| Rated short circuit capacity | 6 kA | |
| Energy limiting class | 3 | |
| Mounting type | DIN rail | |
| Dimensions (H × W × D) | 88 × 70 × 69 mm | |
| Weight | Approx. 0.50 kg | |
| Protection rating | IP20 (IP40 when installed in a suitable enclosure) | |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2, UL 1077 | |
| HS Code | 85362010 | |
| Country of Manufacture | Germany |
Frequently Asked Questions
What is the ABB S203-K1.6NA used for?
The ABB S203-K1.6NA protects three-phase electrical circuits with a neutral against overloads and short circuits in industrial and commercial installations.
What does the K trip characteristic mean?
The K characteristic is intended for circuits with higher inrush currents, making it suitable for motors, transformers and inductive loads.
What is the rated current of this breaker?
This miniature circuit breaker has a 1.6 A rated current.
How is the S203-K1.6NA installed?
The breaker is designed for installation on a standard 35 mm DIN rail inside switchboards and industrial control panels.
Can ABB accessories be fitted?
Yes. The ABB S200 range supports auxiliary contacts, shunt trips, undervoltage releases, motor operators and other compatible accessories.
Trusted by Electrical Professionals Worldwide
ABB System pro M Compact miniature circuit breakers are trusted by panel builders, electrical contractors and industrial engineers worldwide for dependable circuit protection, excellent build quality and long operational life.
