Why Choose the ABB 2CDS383103R0257 S303P-K1.6NA Miniature Circuit Breaker?
The ABB 2CDS383103R0257, also known as the S303P-K1.6NA, is a premium miniature circuit breaker (MCB) engineered to provide dependable protection against overloads and short circuits in demanding industrial electrical installations. As part of the proven ABB S300P System pro M compact range, it delivers outstanding fault-clearing performance, high reliability and compliance with international IEC and UL standards.
Featuring a 3P+N configuration, the S303P-K1.6NA 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, contactors, solenoids and other inductive industrial loads.
With a rated current of 1.6 A, a maximum operating voltage of 415 V AC, and a 25 kA rated short-circuit breaking capacity (100 kA ultimate breaking capacity), the ABB S303P-K1.6NA provides exceptional protection for industrial control panels, switchboards, OEM machinery and automation systems.
Key Advantages
- Premium ABB miniature circuit breaker for industrial electrical protection.
- 1.6 A rated current with Type K tripping characteristic.
- 3P+N configuration with three protected poles and switched neutral.
- 25 kA rated short-circuit breaking capacity.
- Designed for circuits with high motor and transformer starting currents.
- Compact DIN rail installation for industrial control panels.
Key Features
- ABB S300P System pro M compact range.
- 1.6 A rated operational current.
- Type K tripping characteristic.
- Three protected poles with switched neutral.
- 25 kA rated breaking capacity (Icn).
- 100 kA ultimate breaking capacity (Icu).
- Suitable for AC and DC applications.
- Top or bottom supply connection.
- DIN rail mounting.
Reliable Protection for High Inrush Industrial Loads
The ABB S303P-K1.6NA combines thermal overload protection with instantaneous magnetic short-circuit protection to safeguard industrial equipment, cabling and distribution systems. This dual protection minimises downtime while improving electrical safety and equipment longevity.
Its Type K characteristic allows significantly higher transient starting currents than conventional Type B or Type C breakers, making it particularly suitable for motor circuits, transformers, magnetic coils and industrial automation equipment where nuisance tripping must be avoided.
Typical Applications
- Industrial motor control circuits.
- Transformer protection.
- Automation and PLC panels.
- Industrial machinery.
- OEM equipment.
- Electrical distribution boards.
