Why Choose the ABB 2CDS383103R0974 S303P-C1.6NA Miniature Circuit Breaker?
The ABB 2CDS383103R0974, also identified as the S303P-C1.6NA, is an industrial miniature circuit breaker (MCB) designed to protect electrical installations against overloads and short circuits. Part of the ABB System pro M compact S300P series, it combines a low rated current with a high breaking capacity, making it suitable for sensitive control, instrumentation and auxiliary circuits in demanding industrial environments.
Featuring a Type C tripping characteristic, the breaker is suitable for circuits with moderate inrush currents. It uses a delayed thermal release for overload protection and an electromechanical magnetic release for rapid disconnection during short-circuit conditions.
With a rated current of 1.6 A, a 3P+N configuration and an operational voltage of up to 415 V AC, the S303P-C1.6NA is ideal for three-phase control circuits requiring a switched neutral. Its 25 kA ultimate short-circuit breaking capacity, compact DIN-rail format and compatibility with ABB System pro M compact accessories support safe and efficient panel construction.
Key Advantages
- Reliable overload and short-circuit protection for industrial circuits.
- 1.6 A rated current for low-current control and auxiliary applications.
- 3P+N configuration for three-phase circuits with a switched neutral.
- Type C tripping characteristic for loads with moderate inrush currents.
- 25 kA ultimate breaking capacity for installations with high prospective fault currents.
- Integrated trip indication supports rapid fault identification.
- Supply can be connected from the top or bottom.
- Compatible with ABB System pro M compact accessories.
Key Features
- ABB System pro M compact S300P series.
- S303P-C1.6NA model.
- 1.6 A rated current.
- Up to 415 V AC operational voltage.
- 3P+N pole arrangement.
- Type C tripping characteristic.
- 25 kA ultimate short-circuit breaking capacity.
- Thermal overload and magnetic short-circuit releases.
- Dual DIN-rail release for easier installation and removal.
- Fail-safe terminals designed to help prevent incorrect conductor insertion.
High-Performance Protection for Low-Current Industrial Circuits
The ABB S303P-C1.6NA is designed for circuits that carry relatively low operating currents but may be exposed to high prospective short-circuit levels. When an overload occurs, its thermal release disconnects the circuit after a controlled delay. During a short circuit, the magnetic release operates rapidly to limit fault energy and protect conductors and connected equipment.
Its Type C characteristic accommodates the moderate starting currents commonly associated with control transformers, contactor coils, solenoids and similar equipment. This helps reduce nuisance tripping while maintaining dependable protection during genuine electrical faults.
Typical Applications
- Industrial control and automation panels.
- Control transformers and auxiliary supplies.
- Instrumentation and monitoring circuits.
- Contactor coils and solenoid circuits.
- Three-phase control systems with neutral.
- Transportation and infrastructure equipment.
- Renewable-energy control panels.
- Food and beverage production machinery.
