Why Choose the ABB 2CDS383103R0218 S303P-Z1NA Miniature Circuit Breaker?
The ABB 2CDS383103R0218, also known as the S303P-Z1NA, is a premium miniature circuit breaker (MCB) designed to provide reliable protection against overloads and short circuits in industrial electrical installations. As part of the trusted ABB S300P System pro M compact range, it delivers exceptional fault protection, compact dimensions and long-term reliability for demanding power distribution applications.
Featuring a 3P+N configuration, the S303P-Z1NA protects all three phase conductors while incorporating a switched neutral pole. Its Type Z tripping characteristic is specifically engineered for highly sensitive electronic equipment and semiconductor circuits that require extremely fast disconnection under fault conditions and minimal overcurrent tolerance.
With a rated current of 1 A, a maximum operating voltage of 415 V AC and a 25 kA rated short-circuit breaking capacity, the ABB S303P-Z1NA delivers dependable protection for automation systems, instrumentation panels and specialist industrial control equipment. Its compact DIN rail mounting design enables quick installation while optimising panel space.
Key Advantages
- Industrial-grade miniature circuit breaker for sensitive electronic equipment.
- 1 A rated current with Type Z tripping characteristic.
- 3P+N configuration with three protected poles and switched neutral.
- 25 kA rated breaking capacity.
- Rapid fault clearing for electronic and semiconductor circuits.
- Compact DIN rail mounting for fast installation.
Key Features
- ABB S300P System pro M compact series.
- 1 A rated operational current.
- Type Z tripping characteristic.
- Three protected poles plus switched neutral.
- 25 kA rated short-circuit breaking capacity (Icn).
- 100 kA ultimate breaking capacity (Icu).
- Suitable for AC/DC applications.
- Top or bottom supply connection.
- DIN rail mounting.
Reliable Protection for Sensitive Electronic Circuits
The ABB S303P-Z1NA automatically disconnects electrical circuits whenever overload or short-circuit conditions occur, protecting sensitive electronic equipment, PLC systems, instrumentation and semiconductor devices from potentially costly damage while improving operational safety.
Its Type Z tripping characteristic provides exceptionally rapid magnetic tripping compared with conventional breaker curves, making it particularly suitable for circuits where even small overcurrents can damage sensitive components.
Typical Applications
- PLC and control systems.
- Industrial instrumentation panels.
- Sensitive electronic equipment.
- Semiconductor manufacturing machinery.
- OEM automation equipment.
- Industrial distribution panels.
