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ABB S203-B25 MCB – S200 – 3P – B – 25A
ABB S203-B25 three-pole miniature circuit breaker with a 25 A current rating and B tripping characteristic for residential, commercial and industrial electrical protection.
£42.95
Why Choose the ABB S203-B25 Miniature Circuit Breaker?
The ABB S203-B25 is a high-quality three-pole miniature circuit breaker (MCB) from the reliable ABB System pro M Compact S200 series. Featuring a 25 A current rating and a B tripping characteristic, it is designed to provide dependable protection against overloads and short circuits in residential, commercial and light industrial electrical installations. The B curve offers rapid protection for circuits supplying resistive loads with low inrush currents.
Manufactured to ABB's renowned engineering standards, the S203-B25 combines thermal overload protection with electromagnetic short circuit protection to safeguard electrical installations and connected equipment. Its compact DIN rail mounted design enables quick installation in consumer units, distribution boards and industrial control panels.
Fully compliant with recognised international standards, the ABB S203-B25 is widely specified by electrical contractors, panel builders and OEM manufacturers who require reliable circuit protection and long service life.
Key Advantages
- Three-pole miniature circuit breaker for three-phase electrical systems.
- 25 A rated current suitable for a wide range of installations.
- B tripping characteristic for resistive and low inrush current circuits.
- Reliable overload and short circuit protection.
- Compact DIN rail mounting for simple installation.
- Compatible with ABB System pro M Compact accessories.
Key Features
- ABB System pro M Compact S200 series.
- Model: S203-B25.
- 25 A rated current.
- Three protected poles (3P).
- B curve tripping characteristic.
- Thermal and electromagnetic trip mechanisms.
- 6 kA rated breaking capacity to IEC/EN 60898-1.
- DIN rail mounting for electrical panels and distribution boards.
Reliable Protection for Electrical Distribution
The ABB S203-B25 safely disconnects circuits when overloads or short circuits occur, helping to protect wiring and connected equipment from electrical damage. Its B characteristic provides rapid tripping, making it particularly suitable for lighting circuits, socket outlets and other circuits with relatively low starting currents.
As part of ABB's trusted System pro M Compact range, the S203-B25 delivers consistent performance, straightforward installation and compatibility with a comprehensive range of auxiliary contacts, signalling devices and shunt trips.
Typical Applications
- Commercial electrical distribution.
- Residential consumer units.
- Lighting circuits.
- Power distribution panels.
- OEM equipment.
- Industrial control panels with resistive loads.
Technical Specifications
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| Certification | UL 1077 | |
|---|---|---|
| Phase | Three Phase | |
| Current | 25 A | |
| Poles | 3-pole | |
| Device Type | MCB | |
| Trip Curve | B curve | |
| Breaking Capacity | 6 kA | |
| Manufacturer | ABB | |
| Series | System pro M Compact S200 | |
| Model | S203-B25 | |
| Product ID | 2CDS253001R0255 | |
| Product type | Miniature circuit breaker (MCB) | |
| Rated current | 25 A | |
| Number of poles | 3 | |
| Tripping characteristic | B | |
| Rated operational voltage | 230/400 V AC | |
| Frequency | 50 / 60 Hz | |
| Breaking capacity | 6 kA | |
| Protection rating | IP20 | |
| Mounting type | DIN rail | |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2, UL 1077 | |
| Dimensions (H × W × D) | Approx. 88 × 52.5 × 69 mm | |
| Weight | Approx. 0.35 kg | |
| HS Code | 85362010 | |
| Country of Manufacture | Germany |
Frequently Asked Questions
What is the ABB S203-B25 used for?
The ABB S203-B25 protects three-phase electrical circuits against overloads and short circuits in residential, commercial and light industrial installations.
What does the B tripping characteristic mean?
The B curve provides fast tripping for circuits with relatively low inrush currents, making it suitable for lighting, heating and general-purpose electrical circuits.
How many poles does the S203-B25 have?
This model is a three-pole (3P) miniature circuit breaker for three-phase electrical systems.
How is the circuit breaker installed?
The ABB S203-B25 is designed for fast installation onto standard DIN rails within distribution boards, switchgear and control panels.
Which standards does the ABB S203-B25 comply with?
The circuit breaker complies with IEC/EN 60898-1, IEC/EN 60947-2 and UL 1077 standards for dependable circuit protection.
Trusted by Electrical Professionals Worldwide
ABB System pro M Compact miniature circuit breakers are trusted worldwide by electrical contractors, panel builders and industrial engineers for delivering dependable overcurrent protection across residential, commercial and industrial installations.
