Why Choose the ABB S303P-C40NA Miniature Circuit Breaker?
The ABB S303P-C40NA, product code 2CDS383103R0404, is a premium miniature circuit breaker (MCB) designed to provide dependable protection against overloads and short circuits in demanding industrial electrical installations. As part of the robust ABB System pro M compact S300P series, it offers high breaking capacity, reliable operation and long service life for industrial distribution systems and machinery.
Featuring a Type C tripping characteristic, the S303P-C40NA is ideal for circuits with moderate inrush currents, making it suitable for motors, transformers, lighting systems, HVAC equipment and industrial control panels. Its combined thermal and magnetic trip mechanisms provide effective protection while reducing nuisance tripping during equipment start-up.
With a rated current of 40 A, a 3P+N configuration and a rated operational voltage of 415 V AC, this miniature circuit breaker is well suited to three-phase industrial distribution systems requiring simultaneous neutral switching. Its compact DIN rail mounting design enables quick installation inside switchboards and electrical control panels.
Key Advantages
- Reliable overload and short-circuit protection.
- 40 A rated current for industrial and commercial distribution systems.
- Type C tripping characteristic for circuits with moderate inrush currents.
- 3P+N configuration with switched neutral.
- 25 kA breaking capacity for demanding industrial installations.
- Compatible with ABB System pro M compact accessories.
Key Features
- ABB System pro M compact S300P series.
- 40 A nominal current rating.
- Type C 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 indicator for rapid fault identification.
- Dual DIN rail release for quick installation and removal.
Reliable Protection for Industrial Distribution Systems
Miniature circuit breakers automatically disconnect electrical circuits when overloads or short circuits occur. The ABB S303P-C40NA combines thermal overload protection with rapid magnetic fault interruption, helping safeguard electrical installations, machinery, cables and connected equipment against excessive current.
Its Type C tripping characteristic makes it particularly suitable for industrial distribution systems and electrical circuits supplying motors, transformers and other equipment with moderate starting currents. The high breaking capacity provides dependable protection in demanding industrial environments.
Typical Applications
- Industrial distribution boards.
- Machine control panels.
- Motor and pump circuits.
- HVAC and ventilation equipment.
- Commercial electrical installations.
- OEM machinery and automation systems.
