Basic parameters, working principle and purpose:
DBF-1A~20A pull-out free tripping single-phase circuit breaker products work on the principle of bimetallic electric thermal tripping and have temperature compensation structure, which can be used in a wide temperature range. Circuit breakers not only provide overload and short-circuit protection for power lines or electrical equipment, but also have the function of monitoring the on/off status of products.
Basic parameters:
Environmental adaptability
Surrounding medium temperature: (-55~85) ℃
Random vibration: frequency range (15-2000) Hz, functional test value W0=0.076g2/Hz
Acceleration: 10.5g
Impact: 15g technical requirement
Overload current and action time:
Extreme action current
At 25 ℃, the maximum holding current of the product is 115% of the rated current, and the minimum tripping current is 150% of the rated current
At 85 ℃, 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 55 ℃, the maximum holding current of the product is 115% of the rated current, and the minimum tripping current is 160% of the rated current
Inverse time characteristic curve
life
5000 working cycles of resistive load; Inductive load with 2500 working cycles, COS φ=0.6~0.7.
