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ABB S203-B2 MCB – S200 – 3P – B – 2A
ABB S203-B2 3-pole 2 A B curve miniature circuit breaker with 6 kA breaking capacity for residential, commercial and industrial electrical installations.
£58.86
Why Choose the ABB S203-B2 Miniature Circuit Breaker?
The ABB S203-B2 is a premium 3-pole miniature circuit breaker (MCB) designed to provide reliable overload and short circuit protection for low voltage electrical installations. As part of the trusted ABB System pro M compact S200 series, it delivers dependable performance, compact installation and compliance with international standards, making it suitable for residential, commercial and industrial applications.
Featuring a B curve tripping characteristic, the S203-B2 is ideal for protecting resistive loads and circuits with low inrush currents, including lighting circuits, heating equipment and general power distribution. Its modular construction enables straightforward installation on standard DIN rails whilst remaining fully compatible with ABB System pro M compact accessories.
With a 2 A rated current, 3-pole configuration and ABB's proven engineering, the S203-B2 delivers dependable circuit protection whilst helping maximise electrical safety and system reliability.
Key Advantages
- High performance 3-pole miniature circuit breaker.
- 2 A rated current for low current circuit protection.
- B curve characteristic for resistive and low inrush current loads.
- Suitable for residential, commercial and industrial installations.
- 6 kA breaking capacity to IEC 60898-1.
- Compatible with ABB System pro M compact accessories.
Key Features
- ABB System pro M compact S200 series.
- 3-pole (3P) configuration.
- 2 A rated current.
- B characteristic tripping curve.
- Current limiting design.
- 35 mm DIN rail mounting.
- Failsafe bi-directional cylinder-lift screw terminals.
- Reliable overload and short circuit protection.
Reliable Protection for Electrical Installations
The ABB S203-B2 automatically disconnects electrical circuits during overload and short circuit conditions, helping protect connected equipment whilst maintaining system reliability. Its B curve characteristic provides rapid protection for circuits supplying resistive loads and equipment with low starting currents.
As part of ABB's System pro M compact range, the S200 series provides dependable protection, straightforward installation and proven long term reliability, making it a trusted choice for electrical contractors, panel builders and OEM manufacturers.
Typical Applications
- Lighting circuits.
- Heating circuits.
- Commercial electrical installations.
- Distribution boards.
- Industrial control panels.
- General power distribution.
Technical Specifications
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| Current | 2 A | |
|---|---|---|
| Phase | Three Phase | |
| Poles | 3-pole | |
| Device Type | MCB | |
| Trip Curve | B curve | |
| Breaking Capacity | 6 kA | |
| Manufacturer | ABB | |
| Series | System pro M compact S200 | |
| Model | S203-B2 | |
| Product ID | 2CDS253001R0025 | |
| Product type | Miniature Circuit Breaker (MCB) | |
| Rated current | 2 A | |
| Number of poles | 3P | |
| Tripping characteristic | B | |
| Rated operational voltage | Up to 440 V AC | |
| Voltage type | AC/DC | |
| Rated short circuit breaking capacity | 6 kA (IEC/EN 60898-1) | |
| Rated ultimate breaking capacity (Icu) | 20 kA at 230 V AC, 10 kA at 400/440 V AC | |
| Frequency | 50 / 60 Hz | |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2, UL 1077 | |
| Mounting type | 35 mm DIN rail | |
| Protection rating | IP20 | |
| Dimensions (H × W × D) | 88 × 52.5 × 69 mm | |
| Weight | Approx. 0.336 kg |
Frequently Asked Questions
What is the ABB S203-B2 used for?
The ABB S203-B2 provides overload and short circuit protection for three-phase electrical circuits in residential, commercial and industrial installations.
What does the B tripping characteristic mean?
The B curve is designed for resistive loads and circuits with low inrush currents, making it suitable for lighting, heating and general electrical distribution.
How many poles does this circuit breaker have?
The ABB S203-B2 is a 3-pole miniature circuit breaker designed to protect three-phase electrical circuits.
What is the rated current of the S203-B2?
This model has a 2 A rated current.
How is the circuit breaker installed?
The breaker is designed for installation onto a standard 35 mm DIN rail inside electrical distribution boards and control panels.
Trusted by Electrical Professionals Worldwide
ABB System pro M compact miniature circuit breakers are trusted by electrical contractors, panel builders and industrial engineers for dependable circuit protection, consistent performance and long service life.
