Quote Originally Posted by John S View Post
No the fuse is on the supply input. Stepper drives are damaged when the motor supply leads are interfered with.
It's on both sides in the diagram on Arc Euro. Stepper drivers can be damaged if the power wires are suddenly unplugged for similar reasons to doing the same to the motor wires. It's less likely but still possible since interrupting the current causes a high dI/dt which will cause a voltage spike.