Why Choose the ABB 2CDS381103R0087 Miniature Circuit Breaker?
The ABB 2CDS381103R0087, designated S301P-K0.2NA, is a specialist 1P+N miniature circuit breaker from the ABB System pro M compact S300P range. Featuring a 0.2 A rated current and a K tripping characteristic, it has been specifically developed to protect highly sensitive industrial circuits that experience very high transient inrush currents whilst still requiring dependable overload and short-circuit protection.
The K characteristic combines a higher instantaneous magnetic trip threshold than standard Type C devices with precise thermal protection, making it particularly suitable for transformers, solenoid valves, control relays, contactors and other inductive loads. Simultaneous switching of the neutral conductor also provides improved circuit isolation during maintenance.
With a 25 kA rated short-circuit breaking capacity, robust industrial construction and compatibility with the ABB System pro M compact accessory range, the S301P-K0.2NA is an excellent solution for protecting specialised low-current control and automation circuits.
Key Advantages
- Specialist 1P+N miniature circuit breaker with switched neutral.
- 0.2 A rated current for very low-current industrial circuits.
- K tripping characteristic designed for high inrush inductive loads.
- 25 kA short-circuit breaking capacity.
- High immunity to nuisance tripping during equipment energisation.
- Fully compatible with ABB System pro M compact accessories.
Key Features
- ABB System pro M compact S300P series.
- Model: S301P-K0.2NA.
- 1 protected pole with switched neutral (1P+N).
- Rated current: 0.2 A.
- K tripping characteristic.
- Thermal overload protection.
- Electromagnetic short-circuit protection.
- Integrated trip indication.
- Top or bottom supply connection.
- 35 mm DIN rail mounting.
Engineered for Sensitive Industrial Control Circuits
Unlike standard Type B or Type C miniature circuit breakers, the ABB S301P-K0.2NA is designed specifically for circuits supplying inductive components that generate high momentary starting currents. The higher magnetic trip threshold of the K characteristic significantly reduces nuisance tripping whilst maintaining excellent protection against genuine overload and fault conditions.
Its exceptionally low 0.2 A current rating makes it particularly suitable for specialised instrumentation, electronic control systems, transformer secondary protection and precision industrial equipment where reliable low-current protection is essential.
Typical Applications
- Transformer secondary protection.
- Industrial control transformers.
- PLC input and output circuits.
- Solenoid valves.
- Relay and contactor control circuits.
- Instrumentation and monitoring equipment.
- Laboratory and process control systems.
- OEM machinery.
