ABB S203C20 3-pole 20 A miniature circuit breaker with C curve tripping characteristic and 6 kA breaking capacity for overload and short-circuit protection.
£77.05
The ABB S203C20 is a premium 3-pole miniature circuit breaker (MCB) engineered to provide reliable protection against overloads and short circuits in commercial, industrial and residential electrical installations. As part of the trusted ABB System pro M Compact S200 series, it delivers dependable circuit protection, robust construction and long-term performance for modern electrical distribution systems.
Featuring a C curve tripping characteristic, the S203C20 is designed for circuits with moderate inrush currents, making it ideal for motors, pumps, compressors, HVAC equipment and general industrial power distribution. Its thermal-magnetic operating mechanism provides precise overload protection together with rapid short-circuit interruption to safeguard connected equipment.
With a rated current of 20 A, a 3-pole configuration and a 6 kA short-circuit breaking capacity, the ABB S203C20 is suitable for three-phase electrical systems operating at 230/400 V AC. The compact DIN rail mounting design allows straightforward installation within distribution boards, switchgear and industrial control panels.
The ABB S203C20 automatically disconnects electrical circuits whenever overload or short-circuit conditions occur, helping protect cables, switchgear and connected electrical equipment. Its thermal-magnetic design ensures dependable operation while reducing the risk of electrical faults and unnecessary downtime.
The C curve characteristic makes this breaker particularly suitable for circuits supplying motors, pumps, compressors, HVAC systems and other equipment with moderate starting currents. The current-limiting construction further helps reduce stress on electrical installations during fault conditions.
| Current | 20 A |
|---|---|
| Phase | Single Phase |
| Manufacturer | ABB |
| Series | System pro M Compact S200 |
| Model | S203-C20 |
| Product code | 2CDS253001R0204 |
| EAN | 4016779468107 |
| Product type | Miniature Circuit Breaker (MCB) |
| Rated current | 20 A |
| Number of poles | 3 |
| Number of protected poles | 3 |
| Trip characteristic | C Curve |
| Rated operational voltage | 230/400 V AC |
| Maximum operational voltage | 440 V AC |
| Rated frequency | 50 / 60 Hz |
| Rated short-circuit breaking capacity | 6 kA |
| Rated insulation voltage | 440 V |
| Impulse withstand voltage | 4 kV |
| Protection rating | IP20 |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2 and UL 1077 |
| Mounting type | DIN rail |
| Dimensions (H × W × D) | approx. 88 × 52.5 × 69 mm |
| Weight | approx. 0.375 kg |
| HS Code | 85362010 |
| Country of Manufacture | Germany |
The ABB S203C20 protects three-phase electrical circuits against overloads and short circuits in commercial, industrial and residential electrical installations.
A C curve breaker is designed for circuits with moderate inrush currents, making it suitable for motors, pumps, compressors, HVAC equipment and general industrial applications.
The S203C20 is a 3-pole miniature circuit breaker designed for protecting three-phase electrical circuits.
The ABB S203C20 has a 20 amp current rating.
The breaker is designed for installation onto a standard DIN rail inside distribution boards, switchgear assemblies and industrial control panels.
ABB System pro M Compact miniature circuit breakers are trusted by electrical contractors, panel builders and industrial engineers worldwide for delivering dependable protection, robust construction and consistent long-term performance across demanding electrical installations.
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...