Key Steps For Selecting Drop-out Fuses

First, verify whether the system's rated voltage matches drop out fuse. The selected voltage rating should be slightly higher than the rated voltage of the power grid or load system. When selecting the rated current, determine the multiplier based on the distribution transformer or line load current. Pay close attention to the fuse's breaking capacity, ensuring it matches the system's three-phase short-circuit capacity to prevent situations where the fuse cannot interrupt fault currents.