Need a circuit breaker.......

Group,

It's recommended by the maker of the DC servos on my lathe that I
install a 7 amp slow blow fuse or circuit breaker to protect the
motors (2 motors burned up in last 4 years, $820/each).

Motors are rated 4.6 amp continuous, 18.4 peak. Max volts 100.

The motor manufacturer offers a breaker protected motor, but it won't
fit in my space with the breaker protruding from the side. Their
circuit breaker reset is sided mounted with protective cover, .63"
square by .813" tall (fairly small considering that includes the
cover). They buy the breaker from Newark, no part number is
available to me, though.

Anyone have suggestions, brands, etc. I can't seem to come up with
much locally. What I find here are rated 32VDC, would that be okay?

thanks,

Doug