ABB S303P-K0.3 3 pole 0.3 A miniature circuit breaker with K tripping characteristic and 25 kA breaking capacity for industrial overload and short-circuit protection.
£203.91
The ABB S303P-K0.3 (Product ID: 2CDS383001R0117) is a premium 3-pole miniature circuit breaker (MCB) engineered to provide reliable overload and short-circuit protection for sensitive industrial electrical circuits. As part of the trusted ABB System pro M compact S300P series, it is manufactured to international IEC and UL standards, making it ideal for industrial control panels, automation systems and OEM machinery.
Designed for dependable long-term performance, the S303P-K0.3 combines ABB's advanced thermal and magnetic protection technology with a compact DIN rail mounted design. Its K tripping characteristic is specifically intended for circuits with higher inrush currents, allowing normal starting currents for inductive loads while delivering rapid disconnection under fault conditions.
Featuring a 0.3 A rated current, 3-pole configuration and a 25 kA rated short-circuit breaking capacity, the S303P-K0.3 provides dependable protection for low-current industrial applications where maximum reliability and equipment protection are essential.
Miniature circuit breakers automatically disconnect electrical circuits whenever overload or short-circuit conditions occur, protecting wiring, control equipment and connected devices from damage. The ABB S300P range has been developed specifically for demanding industrial environments where dependable protection and long service life are essential.
The K tripping characteristic is particularly suitable for circuits supplying inductive loads with relatively high starting currents, including transformers, relays, solenoids, contactors and specialised control equipment.
| Current | 0.3 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | ABB |
| Series | System pro M compact S300P |
| Model | S303P-K0.3 |
| Product ID | 2CDS383001R0117 |
| EAN | 4016779078122 |
| Product type | Miniature Circuit Breaker (MCB) |
| Rated current | 0.3 A |
| Number of poles | 3 |
| Protected poles | 3 |
| Trip characteristic | K |
| Rated operational voltage | Up to 415 V AC |
| Rated DC voltage | Up to 125 V DC |
| Frequency | 50 / 60 Hz |
| Rated short-circuit breaking capacity (Icn) | 25 kA |
| Rated ultimate breaking capacity (Icu) | 25 kA |
| Rated insulation voltage (Ui) | 500 V |
| Rated impulse withstand voltage (Uimp) | 6 kV |
| Protection rating | IP20 |
| Mounting type | DIN rail |
| Dimensions (H × W × D) | 88 × 52.5 × 69 mm |
| Weight | 372 g |
| HS Code | 85362010 |
| Country of Manufacture | Germany |
The S303P-K0.3 protects sensitive three-phase industrial electrical circuits against overloads and short circuits.
The ABB S303P-K0.3 has a 0.3 A rated current.
The K characteristic is designed for circuits with higher inrush currents, making it ideal for transformers, relays, solenoids and other inductive industrial loads.
The breaker provides a rated short-circuit breaking capacity of 25 kA, making it suitable for demanding industrial electrical installations.
The S303P-K0.3 is designed for installation onto a standard DIN rail inside electrical distribution boards and industrial control panels.
ABB System pro M compact miniature circuit breakers are trusted by electrical engineers, machine builders and industrial maintenance professionals worldwide for dependable circuit protection, exceptional reliability and long-term operational performance.
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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...