ABB S203MC25-1 three-pole miniature circuit breaker with a 25 A rating, C-curve tripping characteristic and 10 kA short-circuit capacity for commercial and industrial circuit protection.
£99.76
The ABB S203MC25-1, also identified as S203M-C25, is a premium three-pole miniature circuit breaker (MCB) designed to provide dependable protection against overloads and short circuits. As part of the trusted ABB System pro M compact S200M series, it delivers reliable protection for residential, commercial and industrial electrical installations.
The circuit breaker features a delayed thermal tripping mechanism for overload protection and an electromechanical tripping mechanism for rapid short-circuit interruption. Its C tripping characteristic makes it ideal for protecting lighting circuits, distribution boards, HVAC equipment, control panels and other electrical loads with moderate inrush currents.
With a rated current of 25 A, a three-pole configuration and a rated short-circuit capacity of 10 kA at 230/400 V AC, the S203MC25-1 offers dependable protection for three-phase electrical systems. Its compact DIN rail mounted design enables straightforward installation inside switchboards, distribution panels and industrial control cabinets.
The ABB S203MC25-1 automatically disconnects electrical circuits whenever overload or short-circuit conditions occur, helping protect wiring, electrical equipment and personnel. Its current-limiting construction minimises fault energy and helps reduce potential damage to connected systems.
Its C-curve characteristic makes it particularly suitable for general-purpose electrical distribution, lighting installations, HVAC equipment, control panels and machinery with moderate transient starting currents.
| Current | 25 A |
|---|---|
| Phase | Single Phase |
| Manufacturer | ABB |
| Series | System pro M compact S200M |
| Model | S203M-C25 |
| Commercial reference | S203MC25-1 |
| Product ID | 2CDS273001R0254 |
| EAN | 4016779550475 |
| Product type | Miniature circuit breaker |
| Number of poles | 3 |
| Number of protected poles | 3 |
| Rated current | 25 A |
| Tripping characteristic | C curve |
| Rated operational voltage | 400 V AC |
| Maximum operational voltage | 440 V AC |
| Rated frequency | 50 / 60 Hz |
| Rated short-circuit capacity (Icn) | 10 kA at 230/400 V AC |
| Rated ultimate breaking capacity (Icu) | 15 kA at 400 V AC |
| Rated service breaking capacity (Ics) | 7.5 kA |
| Rated insulation voltage | 440 V |
| Rated impulse withstand voltage | 4 kV |
| Current limiting class | 3 |
| Protection rating | IP20 |
| Terminal type | Screw terminals |
| Mounting type | 35 mm DIN rail |
| Operating temperature | -25 to +55 °C |
| Dimensions (H × W × D) | approximately 88 × 52.5 × 69 mm |
| Weight | approximately 0.375 kg |
| HS Code | 85362010 |
| Country of Manufacture | Germany |
The ABB S203MC25-1 protects three-phase electrical circuits against overloads and short circuits in residential, commercial and industrial installations.
The miniature circuit breaker has a rated current of 25 A.
A C-curve circuit breaker is designed for circuits with moderate inrush currents, making it suitable for lighting, HVAC equipment, distribution boards and general-purpose electrical loads.
The circuit breaker provides a rated short-circuit capacity of 10 kA and a rated ultimate breaking capacity of 15 kA according to IEC standards.
The S203MC25-1 is designed for installation on a standard 35 mm DIN rail inside electrical distribution boards, switchboards and industrial control panels.
ABB System pro M compact S200M miniature circuit breakers are trusted worldwide by electrical contractors, panel builders and automation engineers for dependable circuit protection, high breaking capacity and long service life.
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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...