I think that some clarification is needed, to avoid confusion of users.
Even with a manual selection of range, the instrument will change the shunt if the current exceeds the selected range, to protect itself. In this case on the screen it will show an "overload" notification, but the current will increase, up to the limit of the source or the rating of the input protection fuse.
For example testing a circuit that is powered from a 12V battery and selecting the lowest range, this does not mean that the current will be limited to 120mA. In a short circuit it will "try" to be more than 100A!
I think that this is the way that most (if not all) auto-range instruments are handling this situation.
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