ABB S203P-K16 three-pole 16 A miniature circuit breaker with K tripping characteristic for industrial and commercial circuit protection.
The ABB S203P-K16 is a premium three-pole miniature circuit breaker (MCB) from the proven ABB System pro M compact S200P series. Engineered for reliable overload and short circuit protection, it is designed for industrial machinery, OEM equipment, automation systems and commercial electrical installations where dependable circuit protection is essential.
Featuring a K tripping characteristic, the S203P-K16 is ideal for circuits supplying motors, transformers and other inductive loads with moderate inrush currents. Its thermal overload protection and fast electromechanical short circuit protection help safeguard electrical equipment while reducing downtime and maintenance costs.
With a 16 A rated current, three-pole configuration and a high 25 kA breaking capacity, the ABB S203P-K16 provides dependable protection for demanding industrial and commercial applications. Its compact DIN rail mounted design also allows easy installation alongside ABB modular accessories.
The ABB S203P-K16 automatically disconnects electrical circuits during overload or short circuit conditions, protecting cables, machinery and electrical equipment from damage. Its current limiting design reduces the thermal and mechanical stresses produced during fault conditions, helping extend equipment life.
The K characteristic is particularly suited to circuits with higher starting currents, making the S203P-K16 an excellent choice for motors, transformers, compressors, conveyors and industrial automation equipment.
| Current | 16 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | ABB |
| Series | System pro M compact S200P |
| Model | S203P-K16 |
| Product ID | 2CDS283001R0467 |
| Product type | Miniature circuit breaker (MCB) |
| Rated current | 16 A |
| Number of poles | 3 |
| Tripping characteristic | K |
| Rated operational voltage | 400 V AC |
| Maximum operating voltage | 480Y / 277 V AC (UL) |
| Frequency | 50 / 60 Hz |
| Rated ultimate breaking capacity (Icu) | 25 kA at 400 V AC |
| Protection rating | IP20 (IP40 when installed in an enclosure) |
| Mounting type | DIN rail |
| Terminal type | Screw terminals |
| Dimensions (H × W × D) | 88 × 52.5 × 69 mm |
| Weight | approx. 0.42 kg |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2, UL1077, CSA 22.2 No. 235 |
The S203P-K16 protects industrial and commercial electrical circuits against overloads and short circuits, particularly where inductive loads are present.
The K curve is designed for circuits with moderate inrush currents, making it suitable for motors, transformers and similar inductive equipment.
The ABB S203P-K16 has a 16 A rated current.
The S203P-K16 is a three-pole miniature circuit breaker.
The breaker is designed for installation onto standard DIN rails within electrical control panels and distribution boards.
ABB System pro M compact miniature circuit breakers are trusted worldwide by panel builders, OEM manufacturers and industrial engineers for dependable circuit protection, high breaking performance and long service life.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...