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2CDS383103R0504 ABB S303P-C50NA Miniature Circuit Breaker – 3+NP – C – 50 A
ABB S303P-C50NA miniature circuit breaker with a 50 A current rating, Type C tripping characteristic, 3P+N configuration and 25 kA breaking capacity for industrial and commercial electrical protection.
£112.86
Why Choose the ABB S303P-C50NA Miniature Circuit Breaker?
The ABB S303P-C50NA, product code 2CDS383103R0504, is a premium miniature circuit breaker (MCB) designed to provide reliable protection against overloads and short circuits in industrial and commercial electrical installations. As part of the trusted ABB System pro M compact S300P series, it offers exceptional performance, high breaking capacity and long-term reliability for demanding applications.
Featuring a Type C tripping characteristic, the S303P-C50NA is ideal for protecting circuits with moderate inrush currents, making it suitable for power distribution, lighting systems, commercial equipment and general industrial loads. Its thermal and magnetic trip mechanisms ensure fast fault clearance while minimising nuisance tripping during normal operation.
With a rated current of 50 A, a 3P+N configuration and a rated operational voltage of up to 415 V AC, the S303P-C50NA is perfectly suited to industrial distribution boards, commercial switchboards and OEM machinery. Its compact DIN rail mounting design enables straightforward installation and compatibility with ABB System pro M compact accessories.
Key Advantages
- Reliable overload and short-circuit protection.
- 50 A rated current for higher-capacity electrical circuits.
- Type C tripping characteristic for general-purpose industrial and commercial applications.
- 3P+N configuration with switched neutral.
- 25 kA breaking capacity for demanding installations.
- Compatible with ABB System pro M compact accessories.
Key Features
- ABB System pro M compact S300P series.
- 50 A nominal current rating.
- Type C tripping characteristic.
- Three protected poles plus switched neutral.
- Rated operational voltage up to 415 V AC.
- 25 kA IEC 60947-2 breaking capacity.
- Integrated trip indication for rapid fault diagnosis.
- Tool-free DIN rail installation and removal.
Reliable Protection for Power Distribution Circuits
Miniature circuit breakers automatically disconnect electrical circuits whenever overloads or short circuits occur. The ABB S303P-C50NA combines thermal overload protection with rapid magnetic fault interruption, helping safeguard cables, switchgear, machinery and connected electrical equipment against excessive current and fault conditions.
Its Type C tripping characteristic is ideally suited to general-purpose industrial and commercial installations where moderate inrush currents are expected, providing dependable protection without unnecessary nuisance tripping.
Typical Applications
- Industrial power distribution systems.
- Commercial electrical installations.
- Motor control panels with moderate starting currents.
- OEM machinery.
- Distribution boards and switchboards.
- Three-phase electrical installations.
Technical Specifications
Tick the specs you need, then view products that match.
| Current | 50 A | |
|---|---|---|
| Phase | Three Phase | |
| Poles | 3-pole + N | |
| Device Type | MCB | |
| Trip Curve | C curve | |
| Breaking Capacity | 25 kA | |
| Manufacturer | ABB | |
| Series | System pro M compact S300P | |
| Model | S303P-C50NA | |
| Product ID | 2CDS383103R0504 | |
| Product type | Miniature circuit breaker | |
| Rated current | 50 A | |
| Tripping characteristic | Type C | |
| Pole configuration | 3P+N | |
| Total poles | 4 | |
| Protected poles | 3 | |
| Rated operational voltage | 415 V AC | |
| Rated insulation voltage (Ui) | 500 V | |
| Rated impulse withstand voltage (Uimp) | 6 kV | |
| Maximum AC voltage | 480Y/277 V AC | |
| Maximum DC voltage | 125 V DC | |
| Frequency | 50 / 60 Hz | |
| Breaking capacity | 25 kA (IEC 60947-2), 15 kA at 440 V AC | |
| Protection rating | IP20 (IP40 when installed in a suitable enclosure) | |
| Mounting type | DIN rail mounting | |
| Terminal capacity | 0.75 to 35 mm² solid, 0.75 to 25 mm² stranded | |
| Mechanical endurance | 20,000 operating cycles | |
| Electrical endurance | 20,000 operating cycles | |
| Dimensions (H × W × D) | approx. 88 × 70 × 69 mm | |
| Weight | approx. 0.496 kg | |
| EAN | 4016779076883 | |
| Country of origin | Germany | |
| HS Code | 85362010 | |
| Country of Manufacture | Germany |
Frequently Asked Questions
What is the ABB S303P-C50NA used for?
The ABB S303P-C50NA protects three-phase industrial and commercial electrical circuits against overloads and short circuits.
What is the rated current of this circuit breaker?
The S303P-C50NA has a rated current of 50 A.
What does the Type C tripping characteristic mean?
Type C circuit breakers are designed for general-purpose circuits with moderate inrush currents, including distribution systems, lighting and motor loads.
What is the breaking capacity of the S303P-C50NA?
The breaker provides a rated short-circuit breaking capacity of 25 kA in accordance with IEC 60947-2.
How is the ABB S303P-C50NA installed?
The breaker mounts onto a standard DIN rail inside electrical distribution boards, industrial control panels and commercial switchboards.
Trusted Protection from ABB
ABB System pro M compact miniature circuit breakers are trusted worldwide by electrical engineers, contractors and panel builders for dependable circuit protection, excellent performance and long-term reliability.
