ABB S303P-C3 three-pole 3 A miniature circuit breaker with a Type C tripping characteristic, designed to protect industrial electrical circuits against overloads and short circuits.
£156.84
The ABB S303P-C3 (Product ID: 2CDS383001R0034) is a high-performance 3-pole miniature circuit breaker (MCB) designed to protect industrial electrical installations against overloads and short circuits. Part of ABB's trusted System pro M compact S300P series, it is manufactured in accordance with international IEC and UL standards for dependable use in demanding control, distribution and machinery applications.
Engineered for reliable long-term operation, the S303P-C3 combines thermal overload protection with rapid electromagnetic short-circuit protection. Its compact modular housing is designed for straightforward DIN rail installation, while the patented terminal arrangement helps support secure cable and busbar connections.
Featuring a 3 A rated current, three protected poles and a C tripping characteristic, this MCB is particularly suitable for three-phase circuits with moderate starting currents. Its high short-circuit interruption capability helps improve installation safety and service continuity in industrial environments.
The ABB S303P-C3 uses two complementary tripping mechanisms to protect connected wiring and equipment. A delayed thermal release responds to sustained overload conditions, while an electromagnetic release rapidly disconnects the circuit when a short circuit occurs.
Its C tripping characteristic is commonly used for circuits containing equipment with moderate switch-on currents. This makes the device suitable for industrial controls, small transformers, solenoid-operated equipment, lighting circuits and other general-purpose three-phase loads.
| Current | 3 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | ABB |
| Product range | System pro M compact |
| Series | S300P |
| Model | S303P-C3 |
| Product ID | 2CDS383001R0034 |
| EAN | 4016779078245 |
| Product type | Miniature Circuit Breaker (MCB) |
| Rated current | 3 A |
| Number of poles | 3 |
| Number of protected poles | 3 |
| Tripping characteristic | C |
| Rated operational voltage | Up to 415 V AC |
| Maximum DC voltage | Up to 125 V DC, subject to installation configuration |
| Frequency | 50/60 Hz |
| Rated short-circuit breaking capacity | Up to 25 kA according to IEC/EN 60898-1 |
| Mounting method | DIN rail |
| Module width | 3 modules |
| Approximate dimensions (H × W × D) | 88 × 52.5 × 69 mm |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2, UL 1077 and CSA 22.2 No. 235 |
| HS Code | 85362010 |
| Country of Manufacture | Germany |
The ABB S303P-C3 protects three-phase industrial and commercial electrical circuits against overloads and short circuits.
The circuit breaker has a nominal current rating of 3 A.
A C tripping characteristic is intended for circuits with moderate inrush currents. It is commonly used with industrial controls, lighting, small transformers and general-purpose electrical equipment.
The S303P-C3 has three protected poles, allowing it to disconnect all three phases together.
The S303P-C3 offers a rated short-circuit breaking capacity of up to 25 kA according to IEC/EN 60898-1, depending on the operating voltage and applicable standard.
It is designed for mounting onto a standard DIN rail inside an electrical distribution board, switchboard or industrial control panel.
Yes. The ABB S300P terminal design supports supply connection from either the top or bottom, subject to the installation requirements.
ABB System pro M compact circuit protection products are trusted by electrical engineers, panel builders, machine manufacturers and maintenance professionals for reliable performance, flexible installation and dependable protection in demanding electrical systems.
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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...