Fuse Selection Calculator

Select the correct fuse for power supplies. Account for inrush, temperature derating, and I²t.

Steady Current (A)

Inrush Current (A)

Inrush Duration (ms)

Ambient Temp (°C)

Max Voltage (V)

Max Fault Current (kA)

Derating: I_nom = I_steadystate/[1-0.005(T_a-25)]

I²t: I²t = I_pk²×t_pulse