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S203-D2 Miniature Circuit Breaker – 3P – D – 2 A
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.
£49.23
Why Choose the ABB S203-D2 Miniature Circuit Breaker?
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.
Key Advantages
- Reliable overload and short-circuit protection for three-phase circuits.
- 2 A rated current for low-current electrical equipment and control circuits.
- D-curve tripping characteristic suitable for loads with high starting currents.
- 6 kA short-circuit breaking capacity at 400 V AC.
- Clear red and green contact-position indication.
- Compact DIN rail mounting for efficient panel installation.
Key Features
- ABB System pro M compact S200 series.
- Three-pole miniature circuit breaker.
- 2 A rated current.
- D tripping characteristic.
- 400 V AC rated operational voltage according to IEC/EN 60898-1.
- 6 kA rated short-circuit capacity at 400 V AC.
- Thermal overload and electromagnetic short-circuit tripping mechanisms.
- Failsafe bi-directional screw terminals.
- Red ON and green OFF contact-position indication.
- Mounting on standard TH35 DIN rail.
Reliable Protection for High-Inrush Electrical Loads
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.
Typical Applications
- Three-phase industrial control circuits.
- Small motors and inductive electrical loads.
- Transformers and power supplies.
- Automation equipment and machinery.
- Commercial and industrial distribution boards.
- Electrical control panels and switchgear assemblies.
Technical Specifications
Tick the specs you need, then view products that match.
| Phase | Three Phase | |
|---|---|---|
| Current | 2 A | |
| Poles | 3-pole | |
| Device Type | MCB | |
| Trip Curve | D curve | |
| Breaking Capacity | 6 kA | |
| 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 |
Frequently Asked Questions
What is the ABB S203-D2 used for?
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.
What is the rated current of the S203-D2?
The miniature circuit breaker has a rated current of 2 A.
What does the D tripping characteristic mean?
A D-curve circuit breaker tolerates higher short-duration inrush currents before magnetic tripping, making it suitable for motors, transformers and other inductive loads.
What is the breaking capacity of this circuit breaker?
The S203-D2 has a rated short-circuit capacity of 6 kA at 400 V AC according to IEC/EN 60898-1.
How is the ABB S203-D2 installed?
The circuit breaker is designed for mounting on a standard 35 mm DIN rail inside an electrical distribution board, switchboard or control panel.
Trusted ABB Circuit Protection
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.
