ABB S203-D2 three-pole miniature circuit breaker with a 2 A current rating, D-curve tripping characteristic and 6 kA short-circuit breaking capacity for industrial and commercial circuit protection.
£89.50
The ABB S203-D2 is a compact and reliable three-pole miniature circuit breaker (MCB) designed to protect electrical circuits against overloads and short circuits. As part of the established ABB System pro M compact S200 series, it provides dependable circuit protection for residential, commercial and industrial electrical installations.
This miniature circuit breaker combines a delayed thermal tripping mechanism for overload protection with an electromagnetic tripping mechanism for rapid short-circuit protection. Its D tripping characteristic is suitable for circuits with high inrush currents, including transformers, motors, control equipment and other inductive electrical loads.
With a rated current of 2 A, a three-pole configuration and a rated short-circuit capacity of 6 kA at 400 V AC, the S203-D2 is well suited to low-current three-phase circuits. Its modular construction allows straightforward installation on standard 35 mm DIN rails inside electrical distribution boards and control panels.
Miniature circuit breakers such as the ABB S203-D2 automatically disconnect an electrical circuit when excessive current is detected. Thermal protection responds to sustained overload conditions, while the electromagnetic mechanism reacts rapidly to high short-circuit currents.
The D-curve characteristic permits higher momentary current peaks before magnetic tripping occurs. This makes the S203-D2 particularly suitable for electrical equipment that can draw a significant inrush current during start-up, while still providing reliable protection for conductors and connected components.
| Current | 2 A |
|---|---|
| Phase | Single Phase |
| Manufacturer | ABB |
| Series | System pro M compact S200 |
| Model | S203-D2 |
| Product ID | 2CDS253001R0021 |
| Product type | Miniature circuit breaker |
| Number of poles | 3 |
| Number of protected poles | 3 |
| Rated current | 2 A |
| Tripping characteristic | D curve |
| Rated operational voltage | 440 V AC according to IEC/EN 60947-2 |
| Rated frequency | 50 / 60 Hz |
| Rated short-circuit capacity | 6 kA at 400 V AC |
| Rated insulation voltage | 440 V |
| Rated impulse withstand voltage | 4 kV |
| Energy-limiting class | 3 |
| Protection rating | IP20 |
| Protection in enclosure | IP40 with cover |
| Electrical endurance | 20,000 operating cycles |
| Terminal type | Screw terminals |
| Mounting type | 35 mm DIN rail |
| Operating temperature | -25 to +55 °C |
| Dimensions (H × W × D) | 88 × 52.5 × 69 mm |
| Weight | approximately 0.375 kg |
| HS Code | 85362010 |
| Country of Manufacture | Germany |
The ABB S203-D2 protects three-phase electrical circuits against overloads and short circuits, particularly where connected equipment has a high starting or inrush current.
The miniature circuit breaker has a rated current of 2 A.
A D-curve circuit breaker tolerates higher short-duration inrush currents before magnetic tripping, making it suitable for motors, transformers and other inductive loads.
The S203-D2 has a rated short-circuit capacity of 6 kA at 400 V AC according to IEC/EN 60898-1.
The circuit breaker is designed for mounting on a standard 35 mm DIN rail inside an electrical distribution board, switchboard or control panel.
ABB System pro M compact S200 miniature circuit breakers are widely used by electrical contractors, panel builders and automation engineers for dependable overload and short-circuit protection in modern electrical 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...