Size (CM): 24.5*24.5*20

Weright (KG): 4.2

856A2577P01 is a high-performance avionics circuit breaker module, a key component in the electrical systems of commercial aircraft like Boeing 737 MAX and Airbus A320neo, compliant with FAA TSO-C24 and AS9100 aerospace standards. It serves as a critical overcurrent protection device for avionics bays, safeguarding navigation systems, flight control computers, and communication transceivers from electrical surges and short circuits during flight and ground maintenance operations.

Crafted from flame-retardant polycarbonate with silver-plated copper contacts, it withstands extreme temperature ranges (-55°C to 125°C) and vibration levels up to 20g. Rated for 20A at 28V DC, it features a trip-time delay of 0.1-0.5 seconds to prevent false triggering, ensuring uninterrupted power to essential avionics while enabling quick replacement during MRO tasks to minimize aircraft downtime.