ABB S301P-K0.5NA miniature circuit breaker featuring a 0.5 A rated current, Type K tripping characteristic, 25 kA breaking capacity and 1P+N configuration for industrial circuit protection.
£114.09
The ABB 2CDS381103R0157, also known as the S301P-K0.5NA, is a premium miniature circuit breaker (MCB) designed to provide dependable protection against overloads and short circuits in industrial electrical systems. Part of the renowned ABB System pro M compact S300P series, this device delivers exceptional breaking capacity and reliable operation for installations where high fault current protection is required.
Featuring a 0.5 A rated current, Type K tripping characteristic and an impressive 25 kA breaking capacity, this circuit breaker is ideally suited to protecting circuits supplying motors, transformers and inductive loads that experience high inrush currents. Its advanced design provides enhanced operational safety while maintaining excellent selectivity and system reliability.
With a 1P+N pole configuration, DIN rail mounting and fail-safe connection terminals, the S301P-K0.5NA is straightforward to install within industrial control panels, switchboards and distribution boards. Compatibility with ABB System pro M compact accessories further increases installation flexibility.
The ABB S301P-K0.5NA is specifically designed for circuits with higher starting currents. Its Type K tripping characteristic allows it to tolerate motor inrush currents while still providing rapid disconnection during overloads and short circuits, helping to protect valuable electrical equipment and minimise downtime.
Its high breaking capacity, compact modular design and compatibility with ABB accessories make it an excellent choice for industrial automation, machine building and electrical distribution systems where dependable circuit protection is essential.
| Current | 0.5 A |
|---|---|
| Phase | Single Phase |
| Manufacturer | ABB |
| Series | System pro M compact S300P |
| Model | S301P-K0.5NA |
| Product ID | 2CDS381103R0157 |
| Product type | Miniature circuit breaker (MCB) |
| Rated current | 0.5 A |
| Tripping characteristic | Type K |
| Number of poles | 1P+N |
| Rated AC voltage | 415 V AC |
| Rated DC voltage | 125 V DC |
| Frequency | 50 / 60 Hz |
| Breaking capacity | 25 kA |
| Protection rating | IP20 (IP40 when installed in an enclosure) |
| Mounting type | DIN rail mounting |
| Dimensions (H × W × D) | approx. 88 × 35 × 69 mm |
| Weight | approx. 0.248 kg |
| Country of origin | Germany |
| HS Code | 85362010 |
| Country of Manufacture | Germany |
This miniature circuit breaker protects low-current industrial circuits against overloads and short circuits, particularly those supplying motors and inductive equipment.
The ABB S301P-K0.5NA has a 0.5 A rated current.
Type K circuit breakers are designed for circuits with high inrush currents, making them ideal for motors, transformers and other inductive loads.
The ABB S301P-K0.5NA provides a high 25 kA short-circuit breaking capacity.
The circuit breaker is designed for quick installation onto a standard DIN rail inside electrical distribution boards and industrial control panels.
ABB System pro M compact S300P miniature circuit breakers are trusted worldwide for delivering reliable overload and short-circuit protection in demanding industrial, commercial and infrastructure applications.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...