ABB S303P-C20NA miniature circuit breaker with a 20 A rating, Type C tripping characteristic, 3P+N configuration and 25 kA breaking capacity.
£157.34
The ABB 2CDS383103R0204, also known as the S303P-C20NA, is a premium miniature circuit breaker (MCB) designed to provide dependable protection against overloads and short circuits in demanding industrial and commercial electrical installations. As part of ABB's renowned S300P System pro M compact range, it delivers outstanding fault protection, exceptional reliability and a compact design for modern power distribution systems.
Featuring a 3P+N configuration, the S303P-C20NA protects all three phase conductors while incorporating a switched neutral pole. Its Type C tripping characteristic makes it ideal for circuits with moderate inrush currents, including motors, pumps, compressors, transformers, HVAC equipment and industrial machinery.
With a rated current of 20 A, a maximum operating voltage of 415 V AC and a 25 kA short-circuit breaking capacity, the ABB S303P-C20NA provides dependable protection for switchboards, control panels and industrial distribution systems. Its compact DIN rail mounting simplifies installation while maximising available panel space.
The ABB S303P-C20NA automatically disconnects electrical circuits whenever overload or short-circuit conditions occur, helping to protect cables, machinery and electrical equipment while improving operational safety and reducing downtime.
Its Type C tripping characteristic makes it particularly suitable for circuits supplying motors and inductive equipment that experience moderate starting currents. Combined with ABB's proven S300P platform, it delivers dependable long-term performance in industrial automation, commercial buildings and OEM machinery.
| Current | 20 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | ABB |
| Series | S300P System pro M compact |
| Model | S303P-C20NA |
| Manufacturer Part Number | 2CDS383103R0204 |
| Product Type | Miniature Circuit Breaker (MCB) |
| Rated Current | 20 A |
| Tripping Characteristic | Type C |
| Configuration | 3P+N |
| Protected Poles | 3 |
| Rated Voltage | Up to 415 V AC |
| Voltage Type | AC/DC |
| Frequency | 50 / 60 Hz |
| Rated Short-Circuit Breaking Capacity | 25 kA |
| Rated Insulation Voltage | 500 V |
| Impulse Withstand Voltage | 6 kV |
| Protection Rating | IP20 |
| Mounting | DIN Rail |
| Connection Capacity | 0.75–35 mm² |
| Electrical Life | 20,000 operations |
| Operating Temperature | -40°C to +70°C |
| Dimensions (H × W × D) | Approx. 88 × 70 × 69 mm |
| Weight | Approx. 0.496 kg |
| EAN | 4016779077217 |
| HS Code | 85362010 |
| Country of Manufacture | Germany |
It protects three-phase electrical circuits against overloads and short circuits in industrial and commercial installations.
The ABB S303P-C20NA has a rated operational current of 20 A.
This model uses a Type C tripping characteristic, making it suitable for motors, transformers and equipment with moderate inrush currents.
The ABB S303P-C20NA provides a rated short-circuit breaking capacity of 25 kA.
The breaker is designed for installation on a standard DIN rail inside switchboards, distribution boards and industrial control panels.
ABB S300P miniature circuit breakers are trusted by industrial engineers, panel builders and OEM manufacturers worldwide for delivering dependable overload and short-circuit protection in demanding electrical installations.
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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...