ABB S301P-B25 single-pole miniature circuit breaker with a 25 A rating, Type B tripping characteristic and 25 kA breaking capacity for industrial and commercial circuit protection.
£36.72
The ABB 2CDS381001R0255, also known as the S301P-B25, is a premium single-pole miniature circuit breaker (MCB) from the ABB System pro M compact S300P series. It is engineered to provide reliable protection against overloads and short circuits in commercial and industrial electrical installations while offering a high fault interruption capability for demanding applications.
The S301P-B25 combines thermal overload protection with electromagnetic short-circuit protection. Its Type B tripping characteristic is designed for circuits with low inrush currents, making it particularly suitable for lighting installations, socket outlets, resistive loads and general-purpose electrical distribution systems.
With a 25 A rated current, a compact single-pole configuration and an ultimate short-circuit breaking capacity of up to 25 kA, the ABB 2CDS381001R0255 delivers dependable protection while occupying only one modular space. Fail-safe terminals, DIN rail mounting and clear contact indication simplify installation and maintenance.
The ABB S301P-B25 automatically disconnects electrical circuits during overload and short-circuit conditions, helping to protect wiring, switchgear and connected equipment from damage. The thermal release responds to prolonged overloads, while the electromagnetic release rapidly interrupts fault currents.
The Type B characteristic trips magnetically between three and five times the rated current, making it ideal for circuits with low inrush currents such as lighting installations, heating circuits, socket outlets and general-purpose electrical distribution systems.
| Current | 25 A |
|---|---|
| Phase | Single Phase |
| Manufacturer | ABB |
| Series | System pro M compact S300P |
| Model | S301P-B25 |
| Product ID | 2CDS381001R0255 |
| Product type | Miniature circuit breaker |
| Rated current | 25 A |
| Number of poles | 1 |
| Protected poles | 1 |
| Tripping characteristic | Type B |
| Magnetic tripping range | 3 to 5 × rated current |
| Rated operational voltage | 240 V AC / 72 V DC |
| Voltage type | AC / DC |
| Frequency | 50 / 60 Hz |
| Rated insulation voltage (Ui) | 500 V |
| Rated impulse withstand voltage (Uimp) | 6 kV |
| Ultimate short-circuit breaking capacity (Icu) | 25 kA |
| Service short-circuit breaking capacity (Ics) | 12.5 kA |
| Protection rating | IP20 (IP40 when installed inside an enclosure) |
| Mounting type | 35 mm DIN rail |
| Modular width | 1 module |
| Dimensions (H × W × D) | Approx. 88 × 17.5 × 69 mm |
| Weight | Approx. 0.124 kg |
| Operating temperature | -40 °C to +70 °C |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2, UL 1077 and CSA 22.2 No. 235 |
| HS Code | 85362010 |
| Country of Manufacture | Germany |
It provides overload and short-circuit protection for commercial and industrial electrical circuits, particularly those supplying lighting and resistive loads.
The ABB S301P-B25 has a rated current of 25 A.
A Type B circuit breaker trips magnetically between three and five times its rated current, making it ideal for circuits with low inrush currents such as lighting, socket outlets and resistive loads.
The ABB S301P-B25 has an ultimate short-circuit breaking capacity of up to 25 kA and a service breaking capacity of 12.5 kA.
Yes. The breaker is suitable for applications up to 72 V DC, subject to the applicable installation requirements.
It mounts onto a standard 35 mm DIN rail and features fail-safe screw terminals for fast, secure installation.
ABB System pro M compact S300P miniature circuit breakers are trusted worldwide by electrical engineers, panel builders and OEM manufacturers for their dependable protection, high breaking capacity and long-term operational reliability.
● Service Agreements
Credit Accounts
Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.
● frequently asked questions
At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.
We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
● latest blog
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...