Depending on what you're testing even a 10amp breaker will trip a lot. IF
you're testing high current devices it may be time to rethink the assembly
of the test battery setup. I would have...

Test Battery > Wire > 30amp fuse > Wire > Distribution Fuse block > smaller
fuses per device > wire > test device

this way you can plug in any range of ATC fuses. Certainly don't want
10amps of current going to a unfused device that is designed for a 3amp
fuse. Pop!

I like Blue Sea blocks. They have a Positive and Negative distribution
block built in. good for testing multiple items:

http://goo.gl/I8vhd9

If you want something cheaper just for the positive side and only testing
one device at a time you can use a simple single ATC fuse like this. You
just cut the wire and attach one end to the battery side and one end to the
test device side. then adjust the fuse sizes depending on what the test
device calls for:

http://goo.gl/I7Q1ru

Hope this helps.

Abel Longoria

On Wed, Jul 1, 2015 at 9:26 AM, Steven Shelton <shelton4@gmail.com> wrote:

> I test my electrical work and 12V devices using a jump starter battery and
> a cigarette lighter plug with two alligator clips attached.  The plug has a
> Buss 10 amp fuse in it.  My limited electrical knowledge results in a lot
> of blown fuses.  Is there a 10 amp breaker that I could wire into the
> tester so I won't have to keep buying boxes of Buss fuses?
>