On 1/26/2014 1:47 AM, Phil Allison wrote:
"bud--"

May or may not, depending on the fuse characteristics. The fuse has to be
slow-blow enough to not open when the motor starts (starting current is
about 6x running current). But it has to open within the i-squared-t
rating of the motor (as in Jim's post).

** Think you will have poor luck with a HRC fuse taking 6 time rated every
time the motor starts or stalls and not nuisance blowing.

Fuses are not usually used for motor overload protection in the US.
There aren't enough fuse ratings to match to the motor running current
except for relatively small motors.


A "motor start" circuit breaker is what is normally used.

Slow, thermal characteristic at up to 6 times and then a very fast magnetic
action at about 10 times.



.... Phil

Time delay breakers can be up to 175% of the motor running current in
the US. They often are used for short circuit protection of a motor
circuit, but not for overload protection. There are even fewer sizes of
breakers than fuses.