Why Choose the ABB 2CDS381103R0255 S301P-B25NA Miniature Circuit Breaker?
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.
Key Advantages
- High-performance miniature circuit breaker for industrial circuit protection.
- 25 A rated current for branch and distribution circuits.
- Type B tripping characteristic for resistive and general-purpose electrical loads.
- 25 kA short-circuit breaking capacity.
- 1P+N configuration for phase and neutral switching.
- Reliable protection against overloads and short circuits.
- Compact DIN rail mounted design saves valuable panel space.
- Compatible with ABB System pro M compact accessories.
Key Features
- ABB System pro M compact S300P series.
- S301P-B25NA miniature circuit breaker.
- 25 A rated current.
- Type B tripping curve.
- 25 kA breaking capacity.
- 1P+N pole configuration.
- 240 V AC rated operational voltage.
- 72 V DC rated operational voltage.
- Fail-safe bi-directional screw terminals.
- DIN rail mounting with contact position indication.
Reliable Circuit Protection for Industrial Installations
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.
Typical Applications
- Industrial electrical distribution boards.
- Commercial electrical installations.
- Lighting circuits.
- Building services installations.
- Control panels and switchboards.
- OEM machinery.
- Infrastructure projects.
- General-purpose electrical protection.
