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ABB S203P-B8 MCB – S200P – 3P – B – 8A
ABB S203P-B8 three pole 8 A miniature circuit breaker with B trip characteristic from the System pro M compact S200P range for overload and short circuit protection.
Why Choose the ABB S203P-B8 Miniature Circuit Breaker?
The ABB S203P-B8 is a high performance three-pole miniature circuit breaker (MCB) from the trusted ABB System pro M compact S200P series. Designed to provide dependable protection against overloads and short circuits, it delivers reliable performance across commercial, industrial and OEM electrical installations.
Featuring a B trip characteristic and an 8 A rated current, the S203P-B8 is ideal for protecting circuits with low inrush current, including lighting circuits, distribution systems and general purpose electrical loads. Its advanced current limiting technology helps minimise fault energy, improving safety while reducing stress on connected equipment.
Manufactured to comply with major international standards including IEC/EN 60898-1, IEC/EN 60947-2, UL1077 and CSA 22.2 No.235, the ABB S203P-B8 provides a robust and reliable circuit protection solution for demanding electrical applications.
Key Advantages
- High quality three-pole miniature circuit breaker.
- 8 A rated current with B curve tripping characteristic.
- Protects against overloads and short circuits.
- Current limiting design improves installation safety.
- Suitable for residential, commercial and industrial applications.
- Compatible with ABB S200P accessories including auxiliary contacts.
Key Features
- ABB System pro M compact S200P series.
- 3 poles.
- 8 A rated current.
- B trip characteristic.
- 25 kA breaking capacity at 400 V AC (IEC).
- 400 V AC rated operational voltage.
- IP20 protection rating.
- DIN rail mounting.
- Accepts optional bottom-mounted auxiliary accessories.
Reliable Circuit Protection for Electrical Installations
The ABB S203P-B8 combines thermal and magnetic tripping mechanisms to provide rapid and dependable protection against overload and short circuit faults. Its current limiting design helps reduce thermal and mechanical stress on electrical systems, improving both safety and equipment longevity.
Suitable for installation in control panels, switchboards and distribution boards, this miniature circuit breaker is widely used by electrical contractors, machine builders and industrial maintenance engineers requiring dependable circuit protection with long service life.
Typical Applications
- Commercial electrical distribution.
- Industrial control panels.
- OEM machinery.
- Building services installations.
- Lighting circuits.
- General power distribution systems.
Technical Specifications
Tick the specs you need, then view products that match.
| Certification | UL 1077 | |
|---|---|---|
| Current | 8 A | |
| Phase | Three Phase | |
| Poles | 3-pole | |
| Device Type | MCB | |
| Trip Curve | B curve | |
| Breaking Capacity | 25 kA | |
| Manufacturer | ABB | |
| Series | System pro M compact S200P | |
| Model | S203P-B8 | |
| Product ID | 2CDS283001R0085 | |
| Product type | Miniature circuit breaker (MCB) | |
| Rated current | 8 A | |
| Number of poles | 3 | |
| Trip characteristic | B | |
| Rated operational voltage | 400 V AC | |
| Rated frequency | 50 / 60 Hz | |
| Breaking capacity | 25 kA | |
| Protection rating | IP20 | |
| Mounting type | DIN rail | |
| Dimensions (H × W × D) | 88 × 52.5 × 69 mm | |
| Weight | Approx. 0.42 kg |
Frequently Asked Questions
What is the ABB S203P-B8 used for?
The ABB S203P-B8 protects three-phase electrical circuits against overloads and short circuits in commercial and industrial installations.
What does the B trip characteristic mean?
A B curve miniature circuit breaker trips at relatively low fault currents, making it ideal for lighting circuits and other loads with low inrush current.
How many poles does the S203P-B8 have?
The device has three poles for protecting three-phase circuits.
Can accessories be fitted?
Yes. The ABB S200P range supports a variety of compatible auxiliary contacts, shunt trips, undervoltage releases and other accessories.
How is the breaker mounted?
The S203P-B8 is designed for quick installation onto a standard DIN rail within electrical distribution boards and control panels.
Trusted by Electrical Professionals Worldwide
ABB System pro M compact miniature circuit breakers are trusted by electrical contractors, OEMs and industrial engineers for delivering dependable circuit protection, outstanding reliability and compliance with international electrical standards.
