ABB S203M-K0.5 miniature circuit breaker from the System pro M compact S200M range featuring 3-pole protection, K curve tripping characteristic, 0.5 A rating and up to 10 kA breaking capacity.
£140.05
The ABB S203M-K0.5 is a high-performance miniature circuit breaker (MCB) from the ABB System pro M compact S200M range, designed to provide dependable overload and short-circuit protection in residential, commercial and industrial electrical installations. Featuring a 3-pole configuration, K curve tripping characteristic and a 0.5 A rated current, it is suitable for low-current circuits with higher inrush characteristics.
The S200M range uses current-limiting technology with a delayed thermal tripping mechanism for overload protection and an electromechanical tripping mechanism for short-circuit protection. This helps protect wiring, equipment and electrical systems from damaging fault currents.
With its compact DIN rail mounting format and robust ABB construction, the S203M-K0.5 is ideal for distribution boards, control panels and switchgear assemblies where reliable three-pole circuit protection is required.
Miniature circuit breakers such as the ABB S203M-K0.5 automatically disconnect electrical circuits when overload or short-circuit conditions occur. This helps protect cables, connected devices and panel equipment from excessive current and potential damage.
Its K curve characteristic makes it suitable for circuits with elevated inrush currents, including control transformers, motors, solenoids and selected inductive loads. The 3-pole design allows simultaneous protection and switching across three conductors in three-phase installations.
| Current | 0.5 A |
|---|---|
| Phase | Single Phase |
| Manufacturer | ABB |
| Series | System pro M compact S200M |
| Model | S203M-K0.5 |
| Product type | Miniature circuit breaker |
| Product ID | 2CDS273001R0157 |
| EAN | 4016779601016 |
| Number of poles | 3P |
| Number of protected poles | 3 |
| Tripping characteristic | K curve |
| Rated current | 0.5 A |
| Rated operational voltage | 400 V AC |
| Rated insulation voltage | 440 V |
| Rated frequency | 50 / 60 Hz |
| Breaking capacity | up to 10 kA |
| Protection rating | IP20 |
| Mounting type | DIN rail mounting |
| Dimensions (W × H × D) | approx. 52.5 × 88 × 69 mm |
| HS Code | 85362010 |
| Country of Manufacture | Germany |
The ABB S203M-K0.5 protects electrical circuits against overloads and short circuits in distribution boards, control panels and industrial switchgear.
The breaker has a rated current of 0.5 A.
K curve breakers are designed for circuits with relatively high inrush currents, making them suitable for motors, transformers, solenoids and other inductive loads.
The S203M-K0.5 is a 3-pole miniature circuit breaker.
It is designed for DIN rail installation inside distribution boards, industrial control panels and electrical switchgear assemblies.
ABB System pro M compact miniature circuit breakers are widely used by electricians, panel builders and electrical engineers for reliable circuit protection in residential, commercial and industrial installations.
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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...