Why Choose the ABB 2CDS383103R0117 S303P-K0.3NA Miniature Circuit Breaker?
The ABB 2CDS383103R0117, also known as the S303P-K0.3NA, is a premium miniature circuit breaker (MCB) designed to provide reliable protection against overloads and short circuits in industrial and commercial electrical installations. As part of the trusted ABB S300P System pro M compact series, it is engineered for applications requiring exceptional fault protection, compact installation and long-term operational reliability.
This model features a 3P+N configuration, protecting all three phase conductors while providing a switched neutral pole. Its Type K tripping characteristic makes it particularly suitable for inductive loads with high inrush currents, including motors, transformers and industrial control equipment where standard Type B or C breakers may not be appropriate.
With a rated current of 0.3 A, a maximum operating voltage of 415 V AC and a 25 kA breaking capacity, the S303P-K0.3NA delivers dependable circuit protection for specialist industrial applications. Its compact DIN rail mounting design simplifies installation in electrical distribution boards and control panels.
Key Advantages
- Industrial-grade miniature circuit breaker for demanding installations.
- 0.3 A rated current with Type K tripping characteristic.
- 3P+N configuration for three-phase circuits with switched neutral.
- 25 kA short-circuit breaking capacity.
- Suitable for protecting circuits with high inrush current loads.
- Compact modular DIN rail design for straightforward installation.
Key Features
- ABB S300P System pro M compact series.
- 0.3 A rated operational current.
- Type K tripping characteristic.
- Three protected poles plus switched neutral.
- 25 kA breaking capacity.
- Bidirectional supply capability.
- Integrated trip indication.
- DIN rail mounting for industrial distribution systems.
Reliable Circuit Protection for Industrial Applications
The ABB S303P-K0.3NA automatically disconnects electrical circuits when overload or short-circuit conditions occur, helping protect sensitive electrical equipment, wiring systems and industrial installations from damage while improving operational safety.
Its Type K tripping characteristic is specifically developed for circuits supplying motors, transformers and other inductive equipment where higher starting currents occur. Combined with ABB's high breaking capacity and proven construction, it provides dependable protection in demanding industrial environments.
Typical Applications
- Motor protection circuits.
- Industrial control panels.
- Transformer protection.
- Machine building and OEM equipment.
- Commercial electrical distribution systems.
- Industrial automation installations.
