Why Choose the ABB 2CDS383103R0255 S303P-B25NA Miniature Circuit Breaker?
The ABB 2CDS383103R0255, also known as the S303P-B25NA, is a premium miniature circuit breaker (MCB) designed to provide dependable protection against overloads and short circuits in industrial and commercial electrical installations. As part of the proven ABB S300P System pro M compact range, it combines a compact design with exceptional fault-clearing performance and worldwide compliance for demanding power distribution systems.
Featuring a 3P+N configuration, the S303P-B25NA protects all three phase conductors while incorporating a switched neutral pole. Its Type B tripping characteristic makes it ideal for lighting circuits, resistive loads, commercial installations and control circuits where low inrush currents require rapid fault disconnection.
With a rated current of 25 A, a rated operating voltage of 415 V AC and a 25 kA short-circuit breaking capacity, the ABB S303P-B25NA delivers reliable protection for switchboards, OEM machinery, commercial buildings and industrial control panels. Its DIN rail mounting enables quick installation while maximising enclosure space.
Key Advantages
- Premium ABB miniature circuit breaker for industrial and commercial electrical protection.
- 25 A rated current with Type B tripping characteristic.
- 3P+N configuration with three protected poles and switched neutral.
- 25 kA short-circuit breaking capacity.
- Ideal for lighting circuits, control panels and resistive loads.
- Compact DIN rail installation.
Key Features
- ABB S300P System pro M compact range.
- 25 A rated operational current.
- Type B tripping characteristic.
- Three protected poles plus switched neutral.
- 25 kA breaking capacity.
- Suitable for AC/DC applications.
- Bidirectional supply capability.
- Contact position indication (Red ON / Green OFF).
- DIN rail mounting.
Reliable Circuit Protection for Industrial Applications
The ABB S303P-B25NA automatically disconnects electrical circuits whenever overload or short-circuit conditions occur, helping to protect wiring, connected equipment and electrical infrastructure while reducing downtime and improving personnel safety.
Its Type B tripping characteristic provides rapid operation on relatively low fault currents, making it particularly suitable for lighting systems, commercial distribution circuits and control equipment where sensitive fault protection is required.
Typical Applications
- Commercial electrical installations.
- Industrial distribution boards.
- Lighting circuits.
- Control panels.
- Building services installations.
- OEM machinery and automation systems.
