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.
