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2CDS383001R0187 ABB S303P-K0.75 Miniature Circuit Breaker – 3P – K – 0.75 A
ABB S303P-K0.75 three-pole miniature circuit breaker featuring a 0.75 A rated current, K curve tripping characteristic and 25 kA breaking capacity for industrial electrical protection.
£112.15
Why Choose the ABB S303P-K0.75 Miniature Circuit Breaker?
The ABB S303P-K0.75 is a high-performance three-pole miniature circuit breaker (MCB) designed to provide dependable protection against overloads and short circuits in industrial, commercial and OEM electrical installations. As part of the proven ABB System pro M compact S300P series, it delivers exceptional reliability, high breaking capacity and compliance with international electrical standards.
Designed for demanding industrial environments, the S303P-K0.75 combines a compact DIN rail mounted design with robust construction, making installation straightforward within switchboards, control panels and electrical distribution systems. Its dependable switching mechanism ensures long service life while protecting valuable electrical equipment.
Featuring a 0.75 A rated current, a K curve tripping characteristic and a 25 kA breaking capacity, this miniature circuit breaker is ideally suited for circuits with higher inrush currents such as motors, transformers, solenoids and other inductive loads.
Key Advantages
- Compact three-pole miniature circuit breaker for industrial applications.
- 0.75 A rated current for low-current industrial circuits.
- K curve tripping characteristic designed for inductive loads.
- 25 kA breaking capacity for superior fault protection.
- Manufactured to international IEC and UL standards.
- Quick DIN rail installation with secure screw terminals.
Key Features
- ABB System pro M compact S300P series.
- 0.75 A rated current.
- Three protected poles.
- K curve tripping characteristic.
- 415 V AC rated operational voltage.
- 25 kA short-circuit breaking capacity.
- IP20 protection rating.
- 35 mm DIN rail mounting.
Reliable Protection for Inductive Loads
The ABB S303P-K0.75 automatically disconnects electrical circuits whenever overload or short-circuit conditions occur, helping protect motors, transformers and other inductive equipment from electrical faults. The K curve characteristic tolerates higher inrush currents while maintaining rapid protection during genuine fault conditions.
Widely specified by panel builders, machine manufacturers and industrial electricians, the S300P range offers dependable operation, long service life and straightforward integration into modern electrical distribution systems.
Typical Applications
- Motor protection circuits.
- Transformer protection.
- Industrial automation systems.
- OEM machinery.
- Control panels and switchboards.
- Commercial and industrial electrical distribution.
Technical Specifications
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| Current | 0.75 A | |
|---|---|---|
| Phase | Three Phase | |
| Poles | 3-pole | |
| Device Type | MCB | |
| Trip Curve | K curve | |
| Breaking Capacity | 25 kA | |
| Manufacturer | ABB | |
| Series | System pro M compact S300P | |
| Model | S303P-K0.75 | |
| SKU | 2CDS383001R0187 | |
| EAN | 4016779078030 | |
| Product type | Miniature circuit breaker (MCB) | |
| Rated current | 0.75 A | |
| Tripping characteristic | K Curve | |
| Number of poles | 3 | |
| Rated operational voltage | 415 V AC | |
| Maximum operating voltage | 480Y/277 V AC, 125 V DC | |
| Frequency | 50 / 60 Hz | |
| Breaking capacity | 25 kA | |
| Protection rating | IP20 | |
| Mounting type | 35 mm DIN rail | |
| Dimensions (H × W × D) | approx. 88 × 52.5 × 69 mm | |
| Weight | approx. 0.372 kg | |
| HS Code | 85362010 | |
| Country of Manufacture | Germany |
Frequently Asked Questions
What is the ABB S303P-K0.75 used for?
It protects three-phase electrical circuits against overloads and short circuits, particularly those supplying motors, transformers and other inductive loads.
What is the rated current of this circuit breaker?
The ABB S303P-K0.75 has a 0.75 A rated current.
What does the K curve tripping characteristic provide?
The K curve allows higher inrush currents before tripping, making it suitable for motor circuits, transformers and other inductive equipment.
What is the breaking capacity?
The S303P-K0.75 provides a 25 kA short-circuit breaking capacity for demanding industrial installations.
How is the ABB S303P-K0.75 installed?
The miniature circuit breaker mounts onto a standard 35 mm DIN rail inside switchboards, distribution boards and industrial control panels.
Trusted by Electrical Professionals Worldwide
ABB System pro M compact miniature circuit breakers are trusted by electricians, machine builders and industrial engineers for delivering dependable circuit protection, high breaking performance and long operational life.
