ABB S203MC16-1 three-pole miniature circuit breaker with a 16 A rating, C-curve tripping characteristic and 10 kA short-circuit capacity for commercial and industrial circuit protection.
£99.76
The ABB S203MC16-1, also identified as S203M-C16, is a high-performance three-pole miniature circuit breaker (MCB) designed to protect electrical circuits against overloads and short circuits. As part of the ABB System pro M compact S200M series, it provides reliable circuit protection for residential, commercial and industrial electrical installations.
This miniature circuit breaker uses a delayed thermal tripping mechanism to protect against sustained overloads and an electromechanical tripping mechanism for rapid short-circuit interruption. Its C-curve tripping characteristic is suitable for general distribution circuits and equipment with moderate starting currents, including lighting systems, control equipment, small motors and building-services installations.
With a rated current of 16 A, a three-pole configuration and a rated short-circuit capacity of 10 kA at 230/400 V AC, the S203MC16-1 provides dependable protection for three-phase circuits. Its compact modular format allows straightforward installation on a standard 35 mm DIN rail inside distribution boards, switchboards and industrial control panels.
The ABB S203MC16-1 automatically disconnects the electrical supply when an overload or short circuit is detected. Its thermal mechanism responds to prolonged excess current, while the electromechanical mechanism provides rapid interruption during severe fault conditions.
The C-curve characteristic allows the breaker to tolerate moderate temporary current surges without unnecessary tripping. This makes it suitable for general power distribution, lighting, control systems, HVAC equipment and small motors commonly used in commercial and industrial installations.
| Current | 16 A |
|---|---|
| Phase | Single Phase |
| Manufacturer | ABB |
| Series | System pro M compact S200M |
| Model | S203M-C16 |
| Commercial reference | S203MC16-1 |
| Product ID | 2CDS273001R0164 |
| EAN | 4016779550451 |
| Product type | Miniature circuit breaker |
| Number of poles | 3 |
| Number of protected poles | 3 |
| Rated current | 16 A |
| Tripping characteristic | C curve |
| Rated operational voltage | 230 / 400 V AC |
| Maximum operational voltage | 440 V AC |
| Rated frequency | 50 / 60 Hz |
| Rated short-circuit capacity (Icn) | 10 kA |
| Rated ultimate breaking capacity (Icu) | up to 15 kA |
| Rated insulation voltage | 440 V |
| Rated impulse withstand voltage | 4 kV |
| Protection rating | IP20 |
| Protection in enclosure | IP40 with a suitable cover |
| Terminal type | Screw terminals |
| Mounting type | 35 mm DIN rail |
| Standards | IEC/EN 60898-1 and IEC/EN 60947-2 |
| Dimensions (H × W × D) | approximately 88 × 52.5 × 69 mm |
| Weight | approximately 0.38 kg |
| HS Code | 85362010 |
| Country of Manufacture | Germany |
The ABB S203MC16-1 protects three-phase electrical circuits against overloads and short circuits in commercial, industrial and building-services installations.
The miniature circuit breaker has a rated current of 16 A.
A C-curve circuit breaker is designed for circuits with moderate starting currents, including lighting systems, control equipment, HVAC loads and small motors.
The circuit breaker has a rated short-circuit capacity of 10 kA at 230/400 V AC.
The S203MC16-1 is installed on a standard 35 mm DIN rail inside an electrical distribution board, switchboard or industrial control panel.
ABB System pro M compact S200M miniature circuit breakers are widely used by electrical contractors, panel builders and automation engineers for reliable circuit protection, high breaking capacity and straightforward installation.
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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...