ABB S203C6 three-pole 6 A miniature circuit breaker with a C curve tripping characteristic and 6 kA rated short-circuit capacity for overload and short-circuit protection.
£79.18
The ABB S203C6 is a high-quality 3-pole miniature circuit breaker (MCB) designed to protect electrical circuits, cables and connected equipment against overloads and short circuits. Part of the established ABB System pro M compact S200 series, it combines thermal-magnetic protection, current-limiting performance and a compact modular design for residential, commercial and industrial installations.
Featuring a C curve tripping characteristic, the S203C6 accommodates moderate temporary inrush currents without unnecessary tripping. This makes it suitable for control equipment, transformers, power supplies, small motors, HVAC controls, lighting circuits and other inductive or mixed electrical loads.
With a rated current of 6 A, a 3-pole configuration and a rated operational voltage of 230/400 V AC, the ABB S203C6 is suitable for low-current three-phase circuits. Its 6 kA rated short-circuit capacity, DIN rail mounting and compatibility with ABB S200 accessories support straightforward installation in distribution boards, switchgear assemblies and control panels.
The ABB S203C6 uses two complementary tripping mechanisms to provide dependable circuit protection. Its delayed thermal mechanism responds to sustained overload conditions, while its electromagnetic mechanism rapidly disconnects the circuit when a short circuit occurs.
The C curve characteristic is designed to tolerate moderate temporary current surges while continuing to protect the circuit from excessive current. This makes the breaker particularly suitable for small motors, transformers, power supplies, contactor circuits and control equipment that may draw additional current during start-up.
Its current-limiting design reduces the peak current and energy allowed to pass during a fault. This helps minimise thermal and mechanical stress on cables, conductors, terminals and downstream equipment while supporting safer and more reliable operation.
| Current | 6 A |
|---|---|
| Phase | Single Phase |
| Manufacturer | ABB |
| Series | System pro M compact S200 |
| Model | S203-C6 |
| Product code | 2CDS253001R0064 |
| EAN | 4016779467506 |
| Product type | Miniature Circuit Breaker (MCB) |
| Rated current | 6 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 capacity (Icn) | 6 kA |
| Ultimate short-circuit breaking capacity (Icu) | 20 kA at 230 V AC; 10 kA at 400/440 V AC |
| Service short-circuit breaking capacity (Ics) | 15 kA at 230 V AC; 7.5 kA at 400/440 V AC |
| Rated insulation voltage | 440 V |
| Rated impulse withstand voltage | 4 kV |
| Dielectric test voltage | 2 kV at 50/60 Hz for one minute |
| Tripping technology | Thermal-magnetic |
| Energy-limiting class | 3 |
| Mechanical endurance | 20,000 operating cycles |
| Electrical endurance | 20,000 AC operating cycles |
| Terminal tightening torque | 2.8 Nm |
| Protection rating | IP20 |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2 and UL 1077 |
| Mounting type | DIN rail |
| Module width | 3 modules |
| Dimensions (H × W × D) | approximately 88 × 52.5 × 69 mm |
| Weight | approximately 0.375 kg |
| HS Code | 85362010 |
| Country of Manufacture | Germany |
The ABB S203C6 protects low-current three-phase electrical circuits, cables and connected equipment against overloads and short circuits.
The miniature circuit breaker has a rated current of 6 A.
A C curve circuit breaker accommodates moderate temporary inrush currents, making it suitable for small motors, transformers, power supplies and industrial control equipment.
The ABB S203C6 has a 3-pole configuration, allowing three conductors to be protected and disconnected simultaneously.
The breaker has a rated short-circuit capacity of 6 kA according to IEC/EN 60898-1.
The breaker mounts onto a standard DIN rail inside distribution boards, switchgear assemblies and industrial control panels.
ABB System pro M compact miniature circuit breakers are widely specified by electrical contractors, panel builders, machine manufacturers and automation engineers for dependable circuit protection, straightforward installation and consistent long-term performance.
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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...