Why Choose the ABB 2CDS381103R0517 S301P-K25NA Miniature Circuit Breaker?
The ABB 2CDS381103R0517, also designated the S301P-K25NA, is a high-performance miniature circuit breaker (MCB) from the ABB System pro M Compact S300P series. Developed for demanding industrial installations, it provides dependable protection against overloads and short circuits while helping maintain the safe and reliable operation of connected equipment.
Manufactured in accordance with relevant international IEC and UL standards, the S301P-K25NA combines ABB engineering with a compact modular design for straightforward DIN rail installation. Its high short-circuit interruption capability, fail-safe terminal construction and clear switching indication make it a practical choice for industrial control panels, machinery and electrical distribution systems.
Featuring a 25 A rated current, a Type K tripping characteristic, a 1P+N configuration and a 25 kA breaking capacity, the ABB 2CDS381103R0517 is particularly suitable for motors, transformers, solenoids and other inductive loads that can produce elevated starting currents.
Key Advantages
- Reliable overload and short-circuit protection for industrial electrical circuits.
- 25 A rated current for machinery, control and power-distribution applications.
- Type K tripping characteristic accommodates the starting currents of inductive equipment.
- 1P+N configuration provides phase protection with simultaneous neutral switching.
- 25 kA breaking capacity supports installations with high prospective fault currents.
- Compact modular construction helps conserve space inside electrical panels.
- Fail-safe terminals help reduce the risk of incorrect conductor insertion.
- Compatible with selected ABB System pro M Compact accessories.
Key Features
- ABB System pro M Compact S300P series.
- S301P-K25NA extended product type.
- 25 A rated current.
- Type K tripping characteristic.
- One protected pole plus switched neutral (1P+N).
- 240 V AC rated operating voltage.
- 72 V DC rated operating voltage.
- 25 kA short-circuit breaking capacity.
- Mechanical switching and trip-status indication.
- DIN rail mounting with secure screw-terminal connections.
Type K Protection for High Starting Currents
Type K miniature circuit breakers are designed for circuits supplying equipment that can draw substantial current when energised. Their instantaneous tripping profile tolerates higher starting currents than more sensitive breaker characteristics, helping prevent unwanted disconnection when motors, transformers and electromagnetic devices start operating.
The ABB S301P-K25NA combines this resistance to nuisance tripping with thermal overload protection and rapid response to genuine short-circuit conditions. This makes it a dependable solution for industrial machinery and automation systems where reliable circuit protection must be balanced with the operating demands of inductive equipment.
Typical Applications
- Industrial motor circuits.
- Transformers and control transformers.
- Solenoids, contactors and electromagnetic equipment.
- Industrial automation control panels.
- Machine building and OEM equipment.
- Process-control installations.
- Commercial and industrial distribution boards.
- Circuits with elevated switch-on or starting currents.
