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2CDS383103R0537 ABB S303P-K32NA Miniature Circuit Breaker – 3+NP – K – 32 A
ABB S303P-K32NA 32A Type K miniature circuit breaker with 3P+N configuration and 25 kA breaking capacity for industrial electrical protection.
£127.18
Why Choose the ABB 2CDS383103R0537 S303P-K32NA Miniature Circuit Breaker?
The ABB 2CDS383103R0537, also identified as the S303P-K32NA, is a robust miniature circuit breaker (MCB) engineered to protect industrial electrical installations against overloads and short circuits. As part of the trusted ABB System pro M compact S300P series, it delivers high breaking performance and dependable protection for demanding industrial power distribution applications.
Featuring a Type K tripping characteristic, this breaker is particularly suitable for circuits supplying motors, transformers and other inductive loads that generate high inrush currents during start-up. Its combined thermal and magnetic trip mechanism ensures reliable overload protection and rapid fault interruption to minimise equipment damage and downtime.
With a rated current of 32 A, a 3P+N configuration and a rated operational voltage of up to 415 V AC, the S303P-K32NA is ideal for industrial control panels, switchboards and machine installations. Its 25 kA breaking capacity and compact DIN rail mounting design simplify installation while providing exceptional protection performance.
Key Advantages
- Industrial miniature circuit breaker for overload and short-circuit protection.
- 32 A rated current suitable for industrial power distribution.
- 3P+N pole configuration for three-phase systems with neutral.
- Type K tripping characteristic designed for inductive loads with high inrush currents.
- 25 kA breaking capacity for demanding industrial installations.
- Integrated trip indication for quick fault identification.
- Compatible with ABB System pro M compact accessories.
- Compact DIN rail mounting for fast installation.
Key Features
- ABB System pro M compact S300P series.
- S303P-K32NA model.
- 32 A rated current.
- 415 V AC operational voltage.
- 3P+N pole arrangement.
- Type K tripping characteristic.
- 25 kA ultimate short-circuit breaking capacity.
- 50 / 60 Hz operation.
- DIN rail mounting.
- Integrated contact and trip position indication.
Reliable Circuit Protection for Industrial Systems
The ABB S303P-K32NA automatically disconnects electrical circuits when overload or short-circuit conditions occur, helping to protect valuable equipment, wiring and electrical infrastructure. Its industrial-grade construction provides dependable protection for demanding environments where reliability is essential.
Its Type K operating characteristic makes it especially suitable for motors, transformers, compressors, pumps and other inductive loads that require higher magnetic trip thresholds to avoid nuisance tripping during start-up while maintaining excellent fault protection.
Typical Applications
- Industrial machinery.
- Motor control centres.
- Electrical distribution panels.
- OEM machinery.
- Factory automation systems.
- Pumps, compressors and fans.
- Industrial switchboards.
Technical Specifications
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| Current | 32 A | |
|---|---|---|
| Phase | Three Phase | |
| Poles | 3-pole + N | |
| Device Type | MCB | |
| Trip Curve | K curve | |
| Breaking Capacity | 25 kA | |
| Manufacturer | ABB | |
| Series | System pro M compact S300P | |
| Model | S303P-K32NA | |
| Product ID | 2CDS383103R0537 | |
| EAN | 4016779076845 | |
| Product type | Miniature circuit breaker | |
| Rated current | 32 A | |
| Number of poles | 3P+N | |
| Protected poles | 3 | |
| Tripping characteristic | Type K | |
| Rated operational voltage | 415 V AC | |
| Rated frequency | 50 / 60 Hz | |
| Rated insulation voltage | 500 V | |
| Impulse withstand voltage | 6 kV | |
| Ultimate short-circuit breaking capacity | 25 kA | |
| Protection rating | IP20 | |
| Mounting type | 35 mm DIN rail | |
| Terminal capacity | 0.75 to 35 mm² | |
| Operating temperature | -40 to +70 °C | |
| Approximate dimensions (H × W × D) | 88 × 70 × 69 mm | |
| Approximate weight | 0.50 kg | |
| HS Code | 85362010 | |
| Country of Manufacture | Germany |
Frequently Asked Questions
What is the ABB 2CDS383103R0537 used for?
It protects three-phase industrial electrical circuits against overloads and short circuits, particularly where motors and inductive equipment are installed.
What is the rated current?
The ABB S303P-K32NA has a 32 A rated current.
What does the Type K tripping characteristic provide?
Type K breakers are designed for circuits with higher inrush currents, making them ideal for motors, transformers and other inductive loads.
What is the short-circuit breaking capacity?
The breaker provides a rated ultimate breaking capacity of 25 kA under IEC 60947-2.
How is this circuit breaker installed?
The S303P-K32NA mounts onto a standard 35 mm DIN rail inside industrial control panels and distribution boards.
Trusted Industrial Protection from ABB
ABB System pro M compact S300P miniature circuit breakers are trusted worldwide for delivering dependable protection, high breaking performance and long-term reliability in industrial electrical installations.
