Why Choose the ABB S303P-D1?
The ABB S303P-D1 is a high-performance miniature circuit breaker from the System pro M compact S300P series, designed to provide dependable protection against overloads and short circuits in AC electrical installations.
This 3-pole miniature circuit breaker combines a 1 A rated current with a D tripping characteristic and a high 25 kA rated breaking capacity, making it suitable for circuits where higher transient or starting currents can occur.
With its three-pole configuration and compact DIN-rail design, the S303P-D1 provides a practical solution for protecting multi-phase electrical circuits in distribution boards, control panels and industrial installations.
Key Advantages
- High breaking capacity: Provides a rated breaking capacity of 25 kA for robust short-circuit protection.
- D tripping characteristic: Suitable for circuits where higher instantaneous current levels can occur during equipment starting or operation.
- 3-pole configuration: Provides simultaneous circuit interruption across three poles without a dedicated neutral pole.
- 1 A rated current: Provides protection for low-current AC circuits and control applications.
- DIN-rail mounting: Enables convenient installation in compatible electrical distribution and control equipment.
- System pro M compact platform: Forms part of ABB's S300P range for modular low-voltage circuit protection.
Key Features
- ABB System pro M compact S300P series miniature circuit breaker
- Model S303P-D1
- 3-pole configuration with no dedicated neutral pole
- D tripping characteristic
- Rated current: 1 A
- Rated breaking capacity: 25 kA
- AC supply/application
- DIN-rail mounting
Reliable Circuit Protection for Industrial Electrical Systems
The S303P-D1 is designed for electrical distribution and control applications where dependable miniature circuit protection is required. Its D characteristic accommodates circuits that may experience higher transient or starting currents while maintaining protection against excessive current conditions.
With its 3-pole configuration and 25 kA breaking capacity, the breaker provides a practical solution for installations requiring coordinated interruption of three circuit conductors without a dedicated neutral pole.
Typical Applications
- Industrial control panels and electrical distribution boards
- Automation and control circuits
- 1 A AC circuits
- Multi-phase electrical machinery and equipment
- Commercial and industrial building services
- Applications requiring D-characteristic miniature circuit protection
