ABB S301P-K4 miniature circuit breaker featuring a 4 A rated current, K tripping characteristic and single-pole design for industrial overload and short-circuit protection.
£54.39
The ABB S301P-K4 (2CDS381001R0337) is a high-performance single-pole miniature circuit breaker (MCB) engineered to provide dependable protection against overloads and short circuits in industrial and commercial electrical installations. As part of the trusted ABB S300P series, this device delivers exceptional reliability for control panels, machinery and power distribution systems.
Designed to meet demanding industrial standards, the S301P-K4 combines excellent breaking capacity with robust construction to help safeguard electrical equipment and minimise downtime. Its compact DIN rail mounting format allows quick installation, while ABB's proven design ensures long service life and dependable performance in challenging environments.
With a 4 A rated current, K tripping characteristic and single-pole configuration, this miniature circuit breaker is ideal for protecting circuits with higher inrush currents, including motors, transformers and inductive loads commonly found in industrial automation applications.
Miniature circuit breakers protect electrical circuits by automatically disconnecting the power supply when overloads or short circuits occur. This helps prevent damage to electrical equipment, wiring and connected machinery while improving overall system safety and reliability.
The ABB S300P range is widely specified by industrial electricians, panel builders and OEM manufacturers due to its high breaking capacity, dependable operation and compliance with recognised international standards.
| Current | 4 A |
|---|---|
| Phase | Single Phase |
| Manufacturer | ABB |
| Series | S300P |
| Model | S301P-K4 |
| SKU | 2CDS381001R0337 |
| Product type | Miniature circuit breaker (MCB) |
| Rated current | 4 A |
| Tripping characteristic | K |
| Number of poles | 1P |
| Rated voltage | 240 V AC |
| Frequency | 50 / 60 Hz |
| Short-circuit breaking capacity | 25 kA (IEC 60947-2) |
| Protection rating | IP20 |
| Mounting type | DIN rail |
| Electrical endurance | 20,000 operating cycles |
| Mechanical endurance | 20,000 operating cycles |
| Weight | Approx. 0.124 kg |
| HS Code | 85362010 |
| Country of Manufacture | Germany |
The S301P-K4 protects electrical circuits against overloads and short circuits in industrial and commercial installations.
This miniature circuit breaker has a 4 A rated current.
The K characteristic is designed for circuits with higher inrush currents, making it suitable for protecting motors, transformers and other inductive loads.
The ABB S301P-K4 is designed for quick and secure installation onto standard DIN rails inside electrical distribution panels.
It is commonly installed in industrial machinery, automation systems, electrical control panels and commercial distribution boards.
ABB miniature circuit breakers are trusted by panel builders, electrical contractors and industrial engineers worldwide for delivering dependable circuit protection, outstanding durability and long-term operational 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...