Basic parameters, working principle and purpose:
The DDB-AB125-AB200 pull-out free tripping single-phase circuit breaker products work on the principle of bimetallic electric thermal tripping. The circuit breaker is used for overload or short circuit protection in aircraft AC/DC distribution systems.
Environmental adaptability:
Surrounding medium temperature: (-55~70) ℃
Sinusoidal vibration: frequency range (10-2000) Hz
Acceleration: 10g
Impact: 30g
Electrical performance:
Extreme action current
At 25 ℃, the maximum holding current of the product is 100% of the rated current, and the minimum tripping current is 150% of the rated current
At 70 ℃, the maximum holding current of the product is 80% of the rated current, and the minimum tripping current is 145% of the rated current
-At 55 ℃, the maximum holding current of the product is 110% of the rated current, and the minimum tripping current is 180% of the rated current
Overload current and action time
life
5000 working cycles under AC resistive load; 2500 cycles of inductive load operation
5000 working cycles under DC resistive load
Breaking ability
DC 3000A; Communication 2500 A
Exterior installation dimensions:
