ABB S301P-B25NA miniature circuit breaker with 25 A rated current, Type B tripping characteristic, 1P+N configuration and 25 kA breaking capacity for industrial and commercial electrical protection.
£71.47
The ABB 2CDS381103R0255, also known as the S301P-B25NA, is a premium miniature circuit breaker (MCB) engineered to provide dependable protection against overloads and short circuits in industrial and commercial electrical installations. As part of the trusted ABB System pro M compact S300P series, it combines a compact design with exceptional fault-breaking performance and full compliance with IEC, EN and UL standards for demanding applications.
Featuring a 25 A rated current, a Type B tripping characteristic and a high 25 kA short-circuit breaking capacity, the S301P-B25NA is ideally suited to protecting lighting circuits, distribution boards, resistive loads and general-purpose electrical equipment where rapid disconnection under fault conditions is essential. The Type B characteristic provides fast operation for circuits with low inrush currents.
With a 1P+N pole configuration, a 240 V AC rated operational voltage and suitability for selected 72 V DC applications, the S301P-B25NA offers versatile circuit protection. Its compact DIN rail mounting, fail-safe bi-directional screw terminals and integrated contact position indication simplify installation and maintenance within industrial control panels and electrical distribution systems.
The ABB S301P-B25NA automatically disconnects electrical circuits when overload or short-circuit conditions occur, helping protect wiring, switchgear and connected electrical equipment from damage. Its thermal and magnetic trip mechanisms provide dependable protection while ensuring long service life in demanding industrial environments.
Designed for industrial power distribution, the ABB S300P range combines high fault-breaking performance with compact dimensions and robust construction. It is widely specified by OEMs, panel builders and electrical contractors where reliable protection and international compliance are essential.
| Current | 25 A |
|---|---|
| Phase | Single Phase |
| Manufacturer | ABB |
| Series | System pro M compact S300P |
| Model | S301P-B25NA |
| Product ID | 2CDS381103R0255 |
| EAN | 4016779079556 |
| Product type | Miniature circuit breaker (MCB) |
| Rated current | 25 A |
| Tripping characteristic | Type B |
| Number of poles | 1P+N |
| Rated AC voltage | 240 V AC |
| Rated DC voltage | 72 V DC |
| Frequency | 50 / 60 Hz |
| Short-circuit breaking capacity | 25 kA |
| Protection rating | IP20 (IP40 when installed in a suitable enclosure) |
| Mounting type | DIN rail mounting |
| Terminal capacity | 0.75 to 35 mm² solid, 0.75 to 25 mm² stranded |
| Electrical endurance | 20,000 operating cycles |
| Insulation voltage (Ui) | 500 V |
| Impulse withstand voltage (Uimp) | 6 kV |
| Operating temperature | -40°C to +70°C |
| Dimensions (H × W × D) | approx. 88 × 35 × 69 mm |
| Weight | approx. 0.248 kg |
| Country of origin | Germany |
| HS Code | 85362010 |
| Country of Manufacture | Germany |
This miniature circuit breaker protects industrial and commercial electrical circuits against overloads and short circuits.
The ABB S301P-B25NA has a rated current of 25 A.
Type B circuit breakers trip quickly at relatively low inrush currents, making them ideal for lighting circuits and resistive electrical loads.
The ABB S301P-B25NA provides a high 25 kA short-circuit breaking capacity.
The circuit breaker is designed for installation onto a standard DIN rail inside electrical distribution boards and industrial control panels.
ABB System pro M compact S300P miniature circuit breakers are trusted worldwide for delivering reliable overload and short-circuit protection in industrial, commercial and infrastructure applications.
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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...