ABB S301P-K2 single-pole miniature circuit breaker with a 2 A rating, Type K tripping characteristic and 25 kA breaking capacity for industrial circuit protection.
£58.55
The ABB 2CDS381001R0277, also known as the S301P-K2, is a premium single-pole miniature circuit breaker (MCB) from the ABB System pro M compact S300P series. It is designed to provide dependable protection against overloads and short circuits in industrial electrical installations where motors, transformers and control equipment require a specialised Type K tripping characteristic.
The Type K characteristic is specifically intended for circuits with high inrush currents while still providing rapid protection against short circuits. This makes the S301P-K2 an excellent choice for industrial automation, motor control, transformers, solenoids and inductive loads where conventional Type B or Type C breakers may nuisance trip.
With a 2 A rated current, a compact single-pole design and a 25 kA rated short-circuit breaking capacity, the ABB 2CDS381001R0277 delivers outstanding protection whilst occupying only one DIN module, making it ideal for modern industrial control panels and OEM machinery.
The ABB S301P-K2 automatically disconnects circuits during overload and short-circuit conditions, protecting motors, transformers, contactors and other inductive equipment from electrical faults. The thermal release protects against sustained overloads, while the magnetic release provides rapid fault interruption.
The Type K characteristic is specifically developed for inductive loads that experience high starting currents. It reduces unnecessary tripping whilst maintaining dependable protection for industrial machinery and automation equipment.
| Current | 2 A |
|---|---|
| Phase | Single Phase |
| Manufacturer | ABB |
| Series | System pro M compact S300P |
| Model | S301P-K2 |
| Product ID | 2CDS381001R0277 |
| EAN | 4016779080316 |
| Product type | Miniature circuit breaker |
| Rated current | 2 A |
| Number of poles | 1 |
| Protected poles | 1 |
| Tripping characteristic | Type K |
| Rated operational voltage | 240 V AC / 72 V DC |
| Frequency | 50 / 60 Hz |
| Rated insulation voltage (Ui) | 500 V |
| Rated impulse withstand voltage (Uimp) | 6 kV |
| Rated short-circuit breaking capacity (Icu) | 25 kA |
| Rated service breaking capacity (Ics) | 12.5 kA |
| Protection rating | IP20 (IP40 when installed within an enclosure) |
| Mounting type | 35 mm DIN rail |
| Dimensions (H × W × D) | Approx. 88 × 17.5 × 69 mm |
| Weight | Approx. 0.124 kg |
| Operating temperature | -40 °C to +70 °C |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2 and UL 1077 |
| HS Code | 85362010 |
| Country of Manufacture | Germany |
It provides overload and short-circuit protection for industrial circuits, particularly those supplying motors, transformers and inductive loads.
The ABB S301P-K2 has a rated current of 2 A.
Type K circuit breakers are designed for inductive loads with high inrush currents, making them ideal for motors, transformers, solenoids and industrial machinery.
The ABB S301P-K2 provides an ultimate short-circuit breaking capacity of up to 25 kA.
Yes. The S301P-K2 is suitable for applications up to 72 V DC, subject to the relevant installation requirements.
It mounts directly onto a standard 35 mm DIN rail and features secure fail-safe terminals for fast installation.
ABB System pro M compact S300P miniature circuit breakers are trusted worldwide by electrical engineers, OEM manufacturers and panel builders for dependable industrial circuit protection, high fault interruption capability and long-term reliability.
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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...