The Crouzet 84412 series is a family of aerospace‑grade, electromechanical thermal circuit breakers designed for reliable circuit protection in compact electrical systems.
Key characteristics
- Provides thermal overcurrent protection, opening the circuit when current exceeds the rated limit and allowing manual reset.
- Compact and lightweight “small model” design, suitable for dense control panels.
- Available in multiple configurations:
- With or without auxiliary (signal) contacts
- Polarized or non‑polarized versions
- Different mounting styles and terminal options
- Designed for harsh environments, with:
- Operating temperatures roughly –60°C to +125°C
- High vibration and endurance performance
- Electrical performance includes high breaking capacity (~2000 A) and strong insulation/dielectric characteristics for aircraft systems.

