Why Choose the ABB S303P-Z8NA Miniature Circuit Breaker?
The ABB S303P-Z8NA, product code 2CDS383103R0408, is a premium miniature circuit breaker (MCB) designed to provide dependable protection against overloads and short circuits in industrial electrical installations. As part of the trusted ABB System pro M compact S300P series, it combines a high breaking capacity, precise tripping performance and robust construction for demanding industrial applications.
Featuring a Type Z tripping characteristic, the S303P-Z8NA is specifically engineered for protecting sensitive electronic equipment, PLCs, instrumentation, semiconductor devices and automation systems. Its highly sensitive magnetic trip characteristic enables rapid disconnection under fault conditions, helping to minimise damage to valuable electronic components.
With a rated current of 8 A, a 3P+N configuration and a rated operational voltage of up to 415 V AC, the S303P-Z8NA is ideal for industrial control panels, machine automation systems and three-phase distribution boards requiring simultaneous neutral switching. Its DIN rail mounting format allows quick installation while maintaining full compatibility with ABB System pro M compact accessories.
Key Advantages
- Reliable overload and short-circuit protection.
- 8 A rated current for industrial control and electronic circuits.
- Type Z tripping characteristic for sensitive electronic equipment.
- 3P+N configuration with switched neutral.
- 25 kA breaking capacity for demanding industrial applications.
- Compatible with ABB System pro M compact accessories.
Key Features
- ABB System pro M compact S300P series.
- 8 A nominal current rating.
- Type Z tripping characteristic.
- Three protected poles plus switched neutral.
- Rated operational voltage up to 415 V AC.
- 25 kA IEC 60947-2 breaking capacity.
- Integrated trip indication for rapid fault identification.
- DIN rail mounting with dual release mechanism.
Precision Protection for Sensitive Electronic Circuits
Miniature circuit breakers automatically disconnect electrical circuits whenever overloads or short circuits occur. The ABB S303P-Z8NA combines thermal overload protection with an exceptionally sensitive magnetic trip mechanism to protect wiring, electronic equipment and automation systems from damaging fault currents.
Its Type Z characteristic is specifically intended for electronic control systems, PLCs, instrumentation and semiconductor equipment where rapid fault clearance is essential to minimise equipment damage and downtime.
Typical Applications
- PLC and industrial automation systems.
- Electronic control panels.
- Instrumentation and monitoring equipment.
- Semiconductor and electronic circuits.
- Industrial machinery and OEM equipment.
- Three-phase distribution systems requiring neutral switching.
