Question

Is A fuse AC or DC?

Answer 1

A fuse can be used in both AC (Alternating Current) and DC (Direct Current) circuits. However, there are some important differences to consider:

1. AC Fuse: Fuses in AC circuits are designed to handle the alternating nature of the current, where the current changes direction periodically. These fuses typically have a more straightforward design to break the circuit when excessive current flows.
   

1. DC Fuse: In DC circuits, the current flows in one direction, so the fuse must be designed to break the circuit when the current exceeds the rated value. DC circuits generally need fuses with a higher breaking capacity, because once the current in a DC circuit is interrupted, it doesn't naturally go to zero like it does in an AC circuit (where the current naturally drops to zero when the AC waveform crosses the zero point). This means DC fuses are usually more robust.
   

So, the type of fuse used depends on the type of circuit: AC fuses for AC circuits and DC fuses for DC circuits. It's important to always use the correct type of fuse to ensure safety and proper circuit protection.