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2CDS383103R0204 ABB S303P-C20NA Miniature Circuit Breaker – 3+NP – C – 20 A
ABB S303P-C20NA miniature circuit breaker with a 20 A rating, Type C tripping characteristic, 3P+N configuration and 25 kA breaking capacity.
£86.54
Why Choose the ABB 2CDS383103R0204 S303P-C20NA Miniature Circuit Breaker?
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.
Key Advantages
- Premium ABB miniature circuit breaker for industrial electrical protection.
- 20 A rated current with Type C tripping characteristic.
- 3P+N configuration with three protected poles and switched neutral.
- 25 kA breaking capacity for demanding installations.
- DIN rail mounting for fast installation.
- Reliable overload and short-circuit protection.
Key Features
- ABB S300P System pro M compact series.
- 20 A rated operational current.
- Type C tripping characteristic.
- 3 protected poles with switched neutral.
- 25 kA rated short-circuit breaking capacity.
- Suitable for AC/DC applications.
- Bidirectional supply capability.
- Compact DIN rail installation.
Reliable Circuit Protection for Industrial Applications
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.
Typical Applications
- Industrial distribution boards.
- Motor control circuits.
- HVAC installations.
- Machine control panels.
- Commercial electrical installations.
- OEM machinery and automation systems.
Technical Specifications
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| Current | 20 A | |
|---|---|---|
| Phase | Three Phase | |
| Device Type | MCB | |
| Trip Curve | C curve | |
| Breaking Capacity | 25 kA | |
| 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 |
Frequently Asked Questions
What is the ABB 2CDS383103R0204 used for?
It protects three-phase electrical circuits against overloads and short circuits in industrial and commercial installations.
What is the rated current of the S303P-C20NA?
The ABB S303P-C20NA has a rated operational current of 20 A.
What tripping characteristic does this breaker use?
This model uses a Type C tripping characteristic, making it suitable for motors, transformers and equipment with moderate inrush currents.
What is the breaking capacity?
The ABB S303P-C20NA provides a rated short-circuit breaking capacity of 25 kA.
How is the ABB S303P-C20NA installed?
The breaker is designed for installation on a standard DIN rail inside switchboards, distribution boards and industrial control panels.
Trusted by Electrical Professionals Worldwide
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.
