Assuming a criminal to be unarmed (or alone for that matter) is a bigger risk than I ever intend to take.
And I completely understand you. But, again...this is not addressed in the question or it would include, "he may or may not be armed."
USE OF
PHYSICAL FORCE IN DEFENSE
OF PREMISES AND IN DEFENSE OF A
PERSON IN THE COURSE OF A BURGLARY
(Penal Law Section 35.20)
1. Any person may use
physical force upon another person when he
reasonably believes such to be necessary to prevent or terminate what he
reasonably believes to be the commission or attempted commission by such
other person of a crime involving damage to premises.
He may use any degree
of physical force, other than deadly physical force,which he reasonably
believes to be necessary for such purpose, and he may use deadly physical
force if he reasonably believes such to be necessary to prevent or terminate the
commission or attempted commission of arson.
You may never use deadly physical force against another person who is
committing criminal mischief (intentionally damaging property) to your
property, or the property of another person.
You may never use deadly physical force against another person who is
stealing property (no matter what the value of the property) when it does not fit
into the category of robbery.
Do not use deadly physical force against a fleeing person. Leave the
apprehension of a suspected felon to the police.