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2CDS381001R0337 ABB S301P-K4 Miniature Circuit Breaker – 1P – K – 4 A
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.
£29.91
Why Choose the ABB S301P-K4 Miniature Circuit Breaker?
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.
Key Advantages
- Compact single-pole miniature circuit breaker for industrial protection.
- 4 A rated current with K characteristic for inductive loads.
- Provides reliable overload and short-circuit protection.
- DIN rail mounting for fast installation in distribution boards.
- High breaking capacity for demanding industrial applications.
- Long electrical and mechanical service life reduces maintenance requirements.
Key Features
- ABB S300P series.
- 4 A rated current.
- K tripping characteristic.
- Single-pole (1P) configuration.
- 240 V AC rated voltage.
- Up to 25 kA short-circuit breaking capacity (IEC 60947-2).
- DIN rail mounting.
- IP20 protection rating.
- Red ON / Green OFF contact position indicator.
- Failsafe screw terminals for secure wiring.
Reliable Circuit Protection for Industrial Installations
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.
Typical Applications
- Industrial control panels.
- Machine building and OEM equipment.
- Motor and transformer protection.
- Power distribution systems.
- Manufacturing and process automation.
- Commercial electrical installations.
Technical Specifications
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| Current | 4 A | |
|---|---|---|
| Phase | Single Phase | |
| Poles | 1-pole | |
| Device Type | MCB | |
| Trip Curve | K curve | |
| Breaking Capacity | 25 kA | |
| 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 |
Frequently Asked Questions
What is the ABB S301P-K4 used for?
The S301P-K4 protects electrical circuits against overloads and short circuits in industrial and commercial installations.
What is the rated current of this circuit breaker?
This miniature circuit breaker has a 4 A rated current.
What does the K tripping characteristic mean?
The K characteristic is designed for circuits with higher inrush currents, making it suitable for protecting motors, transformers and other inductive loads.
How is the circuit breaker installed?
The ABB S301P-K4 is designed for quick and secure installation onto standard DIN rails inside electrical distribution panels.
Where is this MCB typically used?
It is commonly installed in industrial machinery, automation systems, electrical control panels and commercial distribution boards.
Trusted by Electrical Professionals Worldwide
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.
