ABB S203C4 3-pole 4 A miniature circuit breaker with C curve tripping characteristic and 6 kA breaking capacity for overload and short-circuit protection.
£83.24
The ABB S203C4 is a premium 3-pole miniature circuit breaker (MCB) designed to provide dependable protection against overloads and short circuits in residential, commercial and industrial electrical installations. As part of the trusted ABB System pro M Compact S200 series, it combines reliable thermal-magnetic protection, current-limiting technology and a compact design for modern electrical distribution systems.
Featuring a C curve tripping characteristic, the S203C4 is ideal for circuits with moderate inrush currents, making it suitable for control equipment, small motors, transformers, power supplies, HVAC systems and general industrial applications. The thermal overload mechanism and electromagnetic short-circuit protection ensure fast, dependable fault clearance whilst helping to minimise damage to connected equipment.
With a rated current of 4 A, a 3-pole configuration and a 6 kA short-circuit breaking capacity, the ABB S203C4 is designed for three-phase electrical systems operating at up to 230/400 V AC. Its DIN rail mounting design allows rapid installation into distribution boards, switchgear assemblies and industrial control panels.
The ABB S203C4 automatically disconnects electrical circuits whenever overload or short-circuit conditions occur, helping protect wiring, switchgear and connected electrical equipment. Its thermal-magnetic operating mechanism ensures dependable performance whilst reducing downtime and improving electrical safety.
The C curve characteristic makes the breaker particularly suitable for industrial control systems, automation equipment, transformers, small motors and power supplies where moderate temporary starting currents are expected. Current-limiting technology further helps reduce stress on electrical installations during fault conditions.
| Current | 4 A |
|---|---|
| Phase | Single Phase |
| Manufacturer | ABB |
| Series | System pro M Compact S200 |
| Model | S203-C4 |
| Product code | 2CDS253001R0044 |
| EAN | 4016779523462 |
| Product type | Miniature Circuit Breaker (MCB) |
| Rated current | 4 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 (Icn) | 6 kA |
| Ultimate short-circuit breaking capacity (Icu) | 20 kA |
| Rated insulation voltage | 440 V |
| Rated impulse withstand voltage | 4 kV |
| Energy limiting class | 3 |
| Protection rating | IP20 |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2, 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 S203C4 protects low-current three-phase electrical circuits against overloads and short circuits in residential, commercial and industrial installations.
A C curve breaker is designed for circuits with moderate inrush currents, making it suitable for motors, transformers, power supplies and industrial control equipment.
The S203C4 is a 3-pole miniature circuit breaker designed to protect three-phase electrical circuits.
The ABB S203C4 has a 4 amp current rating.
The breaker mounts directly onto a standard DIN rail inside electrical distribution boards, switchgear assemblies and industrial control panels.
ABB System pro M Compact miniature circuit breakers are trusted worldwide by electrical contractors, panel builders and industrial engineers for delivering dependable circuit protection, robust construction and long-term reliability across demanding electrical installations.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
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...