ABB S301P-K25 single-pole miniature circuit breaker with a 25 A rated current, K tripping characteristic and 25 kA breaking capacity for motors, transformers and industrial circuits.
£50.24
The ABB S301P-K25 (2CDS381001R0517) is a high-performance single-pole miniature circuit breaker (MCB) designed to protect industrial electrical installations against overloads and short circuits. Part of the ABB System pro M compact S300P series, it delivers dependable switching performance, high fault-breaking capability and compatibility with established modular accessories.
Featuring a K tripping characteristic, the S301P-K25 is particularly suitable for circuits supplying motors, transformers, solenoids and other inductive equipment with elevated starting currents. The K curve helps accommodate normal inrush current while ensuring effective disconnection when a genuine electrical fault occurs.
With a 25 A rated current, single-pole configuration and 25 kA short-circuit breaking capacity, this compact DIN rail circuit breaker is ideal for industrial control panels, machine-building applications, manufacturing systems and commercial distribution equipment.
Miniature circuit breakers automatically disconnect a circuit when excessive current is detected. Thermal protection responds to sustained overloads, while magnetic protection provides rapid disconnection during short-circuit conditions. Once the fault has been corrected, the device can be reset without replacing a fuse.
The K tripping characteristic makes the ABB S301P-K25 particularly effective in circuits where motors, transformers and electromagnetic devices create temporary inrush currents during start-up. This helps reduce unwanted tripping while maintaining dependable protection for conductors and connected equipment.
| Current | 25 A |
|---|---|
| Phase | Single Phase |
| Manufacturer | ABB |
| Series | System pro M compact S300P |
| Model | S301P-K25 |
| SKU | 2CDS381001R0517 |
| Product type | Miniature circuit breaker (MCB) |
| Rated current | 25 A |
| Tripping characteristic | K |
| Number of poles | 1P |
| Rated operational voltage | 240 V AC |
| Frequency | 50 / 60 Hz |
| Ultimate breaking capacity | 25 kA |
| Rated insulation voltage | 500 V |
| Impulse withstand voltage | 6 kV |
| Protection rating | IP20; up to IP40 when installed in a suitable enclosure |
| Connection capacity | 0.75 to 35 mm² |
| Electrical endurance | Up to 20,000 operating cycles |
| Operating temperature | -40 °C to +70 °C |
| Mounting type | DIN rail |
| Terminal type | Screw terminal |
| Dimensions (H × W × D) | 88 × 17.5 × 67.6 mm |
| Standards | IEC/EN 60947-2, UL 1077 and CSA 22.2 No. 235 |
| HS Code | 85362010 |
| Country of Manufacture | Germany |
The ABB S301P-K25 protects industrial electrical circuits against overloads and short circuits, particularly circuits supplying motors, transformers, solenoids and other inductive equipment.
This miniature circuit breaker has a 25 A rated current.
A K characteristic accommodates higher temporary inrush currents than general-purpose curves, making it suitable for motor, transformer and inductive-load circuits while still providing reliable fault protection.
The ABB S301P-K25 provides an ultimate short-circuit breaking capacity of 25 kA.
The circuit breaker mounts onto a standard DIN rail inside a suitable electrical distribution board, industrial control panel or machinery enclosure.
ABB System pro M compact circuit protection products are widely specified by electrical engineers, panel builders and OEM manufacturers for dependable performance, straightforward installation and long-term operational reliability.
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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...