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ABB S203-K3 MCB – S200 – 3P – K – 3A
ABB S203-K3 miniature circuit breaker, a 3-pole 3 A K curve MCB from the System pro M compact S200 range with 6 kA breaking capacity for commercial, industrial and control panel circuit protection.
£71.10
Why Choose the ABB S203-K3 Miniature Circuit Breaker?
The ABB S203-K3 is a compact and reliable 3-pole miniature circuit breaker (MCB) designed to protect electrical circuits against overloads and short circuits. Part of the ABB System pro M compact S200 range, it provides dependable modular circuit protection for commercial, industrial and control panel installations.
With a K tripping characteristic, the S203-K3 is suitable for circuits with higher inrush currents, helping reduce nuisance tripping while maintaining effective protection. This makes it a practical choice for selected inductive loads, transformers, control circuits and automation equipment.
Rated at 3 A with a 3-pole configuration and 6 kA short-circuit breaking capacity, the ABB S203-K3 provides effective protection for three-phase low-current circuits. Its DIN rail mounting design allows fast installation in distribution boards, machine panels and electrical enclosures.
Key Advantages
- 3-pole miniature circuit breaker for three-phase circuit protection.
- 3 A rated current suitable for low-current power and control circuits.
- K curve tripping characteristic for circuits with higher inrush currents.
- 6 kA breaking capacity for reliable short-circuit protection.
- Part of the ABB System pro M compact S200 range.
- DIN rail mounting for efficient panel and board installation.
Key Features
- ABB S203-K3 miniature circuit breaker.
- S200 series modular protection device.
- 3 protected poles.
- 3 A rated current.
- K characteristic trip curve.
- 6 kA rated short-circuit capacity.
- Thermal-magnetic tripping for overload and short-circuit protection.
- Compatible with ABB System pro M compact accessories.
Reliable Protection for Low-Current Three-Phase Circuits
Miniature circuit breakers such as the ABB S203-K3 automatically disconnect a circuit when excessive current is detected. The thermal tripping mechanism provides overload protection, while the electromechanical tripping mechanism responds quickly to short-circuit faults.
The K curve characteristic is designed for circuits where inrush currents may occur during normal operation. This makes the S203-K3 suitable for selected inductive loads, transformer circuits, automation equipment and control systems where standard tripping characteristics may not be ideal.
Typical Applications
- Three-phase control circuits.
- Industrial automation panels.
- Transformer and inductive load protection.
- Machine building and OEM equipment.
- Commercial and industrial distribution boards.
- Low-current auxiliary and power circuits.
Technical Specifications
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| Phase | Three Phase | |
|---|---|---|
| Current | 3 A | |
| Poles | 3-pole | |
| Device Type | MCB | |
| Trip Curve | K curve | |
| Breaking Capacity | 6 kA | |
| Manufacturer | ABB | |
| Series | S200 | |
| Model | S203-K3 | |
| Product ID | 2CDS253001R0317 | |
| EAN | 4016779507509 | |
| Product type | Miniature circuit breaker | |
| Number of poles | 3P | |
| Protected poles | 3 | |
| Rated current | 3 A | |
| Tripping characteristic | K curve | |
| Rated short-circuit capacity | 6 kA | |
| Rated operational voltage | 400 V AC | |
| Maximum operational voltage | 440 V AC | |
| Rated insulation voltage | 440 V | |
| Rated impulse withstand voltage | 4 kV | |
| Rated frequency | 50 / 60 Hz | |
| Input voltage type | AC / DC | |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2, UL 1077 | |
| Mounting type | DIN rail | |
| Terminal type | Screw terminals | |
| Dimensions (H × W × D) | approx. 88 × 52.5 × 69 mm | |
| Weight | approx. 0.38 kg | |
| HS Code | 85362010 | |
| Country of Manufacture | Germany |
Frequently Asked Questions
What is the ABB S203-K3 used for?
The ABB S203-K3 is used to protect three-phase electrical circuits against overloads and short circuits in industrial, commercial and control panel applications.
What is the rated current of the ABB S203-K3?
The S203-K3 has a rated current of 3 A.
How many poles does the S203-K3 have?
This miniature circuit breaker has a 3-pole configuration with three protected poles.
What does the K curve mean on this breaker?
The K curve tripping characteristic is designed for circuits with higher inrush currents, making it suitable for selected inductive loads, transformers and control circuits.
Where is the ABB S203-K3 typically installed?
It is typically installed on a DIN rail inside distribution boards, control panels, machine cabinets or industrial electrical enclosures.
Trusted by Electrical Engineers Worldwide
ABB System pro M compact S200 miniature circuit breakers are trusted by electrical contractors, panel builders and engineers for reliable modular circuit protection across commercial and industrial installations.
