Why Choose the ABB 2CDS383103R0187 S303P-K0.75NA Miniature Circuit Breaker?
The ABB 2CDS383103R0187, also known as the S303P-K0.75NA, is a high-performance 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 offers exceptional fault-breaking capability, compact dimensions and long-term operational reliability for demanding power distribution systems.
Featuring a 3P+N configuration, the S303P-K0.75NA protects all three phase conductors while incorporating a switched neutral pole. Its Type K tripping characteristic is specifically designed for circuits with high inrush currents, making it ideal for motors, transformers, solenoids, contactors and other inductive industrial loads.
With a rated current of 0.75 A, an operating voltage of up to 415 V AC and a high 25 kA breaking capacity, the ABB S303P-K0.75NA delivers dependable protection for industrial control panels, switchboards and OEM machinery. Its DIN rail mounting design enables fast installation while optimising panel space.
Key Advantages
- Industrial-grade miniature circuit breaker for dependable electrical protection.
- 0.75 A rated current with Type K tripping characteristic.
- 3P+N configuration for three-phase systems with switched neutral.
- 25 kA short-circuit breaking capacity.
- Designed for circuits with high motor and transformer starting currents.
- Compact DIN rail mounting for quick installation.
Key Features
- ABB S300P System pro M compact series.
- 0.75 A rated operational current.
- Type K tripping characteristic.
- Three protected poles plus switched neutral.
- 25 kA rated breaking capacity.
- Suitable for AC/DC applications.
- Bidirectional supply capability.
- DIN rail mounting for industrial control panels and distribution boards.
Reliable Circuit Protection for Industrial Applications
The ABB S303P-K0.75NA automatically disconnects electrical circuits whenever overload or short-circuit conditions occur, helping to protect motors, transformers, wiring and connected electrical equipment while improving operational safety and reducing costly downtime.
Its Type K tripping characteristic makes it particularly suitable for inductive loads that generate high starting currents. Combined with ABB's proven S300P platform, it delivers dependable performance across industrial automation, machine building and commercial electrical installations.
Typical Applications
- Motor protection circuits.
- Industrial automation systems.
- Machine control panels.
- Transformer protection.
- OEM machinery.
- Industrial distribution boards.
