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ABB S203M-K20 MCB – S200M – 3P – K – 20A
ABB S203M-K20 3-pole 20 A K curve miniature circuit breaker from the System pro M compact S200M range, designed for overload and short circuit protection in industrial, commercial and control panel applications.
£73.88
Why Choose the ABB S203M-K20 Miniature Circuit Breaker?
The ABB S203M-K20 is a dependable 3-pole miniature circuit breaker (MCB) from the ABB System pro M compact S200M series. Designed for professional electrical installations, it provides reliable overload and short circuit protection for industrial, commercial and OEM control panel applications.
Featuring a K tripping characteristic, the S203M-K20 is particularly suitable for circuits with higher inrush currents, including transformers, motors, control circuits and inductive loads. Its current limiting design helps reduce fault energy, protecting connected equipment and improving installation reliability.
With a 20 A rated current, 3-pole configuration and 10 kA breaking capacity, the ABB S203M-K20 delivers robust circuit protection in a compact DIN rail mounted format. It is suitable for three-phase electrical systems where dependable protection and compact installation are required.
Key Advantages
- Reliable 3-pole miniature circuit breaker for industrial applications.
- 20 A rated current with K tripping characteristic.
- Current limiting technology helps minimise fault energy.
- 10 kA breaking capacity for dependable short circuit protection.
- Suitable for motors, transformers and inductive loads.
- Compatible with ABB auxiliary contacts and modular accessories.
Key Features
- ABB System pro M compact S200M series.
- 3-pole (3P) miniature circuit breaker.
- 20 A rated current.
- K curve tripping characteristic.
- 10 kA rated breaking capacity.
- Thermal overload and magnetic short circuit protection.
- Current limiting performance for enhanced equipment protection.
- DIN rail mounting with contact position indication.
Reliable Circuit Protection for Industrial Installations
Miniature circuit breakers such as the ABB S203M-K20 protect electrical circuits by disconnecting the supply when overload or short circuit conditions occur. The thermal mechanism responds to sustained overloads, while the magnetic mechanism provides rapid disconnection during short circuit faults.
The K curve characteristic is designed for circuits with increased inrush current, making this MCB suitable for industrial control systems, transformer circuits, motor control equipment and machinery applications. Its 3-pole construction provides protection for three-phase circuits within a compact DIN rail mounted format.
Typical Applications
- Industrial control panels.
- Machine building and OEM equipment.
- Transformer protection.
- Motor control circuits.
- Commercial electrical installations.
- Automation and process control systems.
Technical Specifications
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| Phase | Three Phase | |
|---|---|---|
| Current | 20 A | |
| Poles | 3-pole | |
| Device Type | MCB | |
| Trip Curve | K curve | |
| Breaking Capacity | 10 kA | |
| Manufacturer | ABB | |
| Series | System pro M compact S200M | |
| Model | S203M-K20 | |
| Manufacturer Part Number | 2CDS273001R0487 | |
| EAN | 4016779601269 | |
| Product type | Miniature Circuit Breaker (MCB) | |
| Rated current | 20 A | |
| Number of poles | 3P | |
| Tripping characteristic | K | |
| Rated operational voltage | Up to 440 V AC | |
| Frequency | 50 / 60 Hz | |
| Breaking capacity | 10 kA | |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2 | |
| Protection rating | IP20 | |
| Mounting type | DIN rail | |
| Terminal type | Bi-directional cylinder-lift terminal | |
| Operating temperature | -25 to +55 °C | |
| Dimensions (H × W × D) | approx. 88 × 52.5 × 69 mm | |
| Weight | approx. 0.375 kg | |
| HS Code | 85362010 | |
| Country of Manufacture | Germany |
Frequently Asked Questions
What is the ABB S203M-K20 used for?
The ABB S203M-K20 is used to protect electrical circuits against overloads and short circuits in industrial, commercial and control panel applications.
What is the rated current of the S203M-K20?
The S203M-K20 has a 20 A rated current.
What does the K tripping characteristic mean?
The K curve is designed for circuits with higher inrush currents, making it suitable for transformers, motors, inductive loads and control equipment.
How many poles does this circuit breaker have?
The ABB S203M-K20 is a 3-pole miniature circuit breaker, suitable for three-phase circuit protection.
What breaking capacity does the ABB S203M-K20 provide?
The S203M-K20 provides a 10 kA breaking capacity, supporting reliable short circuit protection in professional electrical installations.
Trusted by Electrical Professionals Worldwide
ABB System pro M compact S200M miniature circuit breakers are trusted by panel builders, electrical contractors and automation engineers for dependable protection, compact installation and proven performance in demanding electrical systems.
