AB1

S300 Series Miniature Circuit Breakers

Short Description

Discover a new level of performance, efficiency, and safety with the S300P miniature circuit breakers.

Fully compatible with the existing ABB’s System pro M compact® accessories, the S300 P ensures reliable protection in demanding applications such as industrial applications, commercial buildings, data centres and e-mobility by reducing downtime and increasing service continuity.

Additionally, the new generation S300 P offers new functionalities. including the Trip Position Indicator (TPI), the Dual DIN-rail clip, and a QR code for quick access to documentation, certificates, and technical data.


  • Fully compatible with existing System pro M compact® accessories
  • Easy and quick replacement of old S200P
  • Wide range for many different applications & functions
  • Updated terminal design supports larger cables, up to 35 mm²
  • New tool-free dual DIN-rail clip for easy removal of the device, even when mounted on busbars
  • One module width, in combination with built-in auxiliary contact, to save installation space
  • Simple access to product data and documents via QR code
  • New Trip Position Indicator (TPI) to identify tripping events (e.g. overload, short-circuit)
  • Increased impulse withstands voltage and lower internal resistance for improved safety and energy efficiency thanks to reduced power loss
  • Worldwide usability with global certifications
  • High level of 25kA of overcurrent and short circuit protection
    for the complete MCB range (0,2A – 63A)
  • Best-in-class technical features for improved robustness and safety
  • The ABB EcoSolutions™ label provides full transparency to environmental impacts across the entire product lifecycle. Products within the portfolio comply with a set of key performance indicators defined in ABB’s circularity framework and carry an external, third-party verified environmental product declaration (ISO 14025).
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