ABB S203M-K25 three-pole 25 A miniature circuit breaker with K tripping characteristic and 10 kA breaking capacity for industrial, commercial and panel building applications.
£140.05
The ABB S203M-K25 is a reliable three-pole miniature circuit breaker (MCB) designed to provide high quality protection against overloads and short circuits in industrial, commercial and residential electrical installations. As part of the ABB S200M System pro M compact series, it delivers dependable circuit protection in a compact DIN rail mounted format.
This MCB features a K tripping characteristic, making it well suited to circuits with higher inrush currents such as motors, transformers, inductive loads and industrial control equipment. Its current limiting design helps reduce fault energy, protecting connected cables, devices and switchgear during fault conditions.
With a 25 A rated current, three-pole configuration and 10 kA breaking capacity, the ABB S203M-K25 is ideal for three-phase electrical distribution, machinery panels and automation systems where robust protection and reliable operation are required.
Miniature circuit breakers such as the ABB S203M-K25 automatically disconnect the electrical supply when overload or short circuit conditions occur. This helps protect wiring, machinery and connected electrical equipment from damage caused by excessive current.
The K curve makes this breaker especially useful in installations where equipment may draw higher starting currents during normal operation. This helps reduce unwanted tripping while maintaining dependable protection during genuine fault conditions.
| Current | 25 A |
|---|---|
| Phase | Single Phase |
| Manufacturer | ABB |
| Series | S200M |
| Model | S203M-K25 |
| Product ID | 2CDS273001R0517 |
| Product type | Miniature circuit breaker (MCB) |
| Rated current | 25 A |
| Number of poles | 3P |
| Tripping characteristic | K |
| Rated operational voltage | 230 / 400 V AC |
| Rated frequency | 50 / 60 Hz |
| Rated short-circuit breaking capacity | 10 kA |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2, UL 1077 |
| Mounting type | DIN rail |
| Protection rating | IP20 |
| EAN | 4016779601290 |
| HS Code | 85362010 |
| Country of Manufacture | Germany |
The ABB S203M-K25 is used to protect three-phase electrical circuits against overloads and short circuits in industrial, commercial and panel building applications.
The K characteristic is designed for circuits with higher inrush currents, making it suitable for inductive loads such as motors, transformers and control equipment.
The ABB S203M-K25 has a 25 A rated current.
This model is a three-pole (3P) miniature circuit breaker for three-phase electrical systems.
The ABB S203M-K25 provides a 10 kA short-circuit breaking capacity at 230 / 400 V AC.
ABB S200M miniature circuit breakers are trusted by contractors, panel builders and industrial engineers for reliable protection, compact installation and consistent performance in demanding electrical systems.
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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...