I have purchased a arduino uno, and an adafruit motor shield Adafruit Motor/Stepper/Servo Shield for Arduino v2 Kit [v2.3] : ID 1438 : $19.95 : Adafruit Industries, Unique & fun DIY electronics and kits.

This is my first project with arduino, so I accidentally bought a shield that might not handle the amperage. I will be controlling a 10amp motor with a 12V 10amp power source.

I am learning that the specs on the adafruit shield recommend amperage lower than 3A. Is there anything I can add to drive the motor with the correct amperage without having to buy a new motor shield? Or if I have too, are there any suggestions on replacements?

Thank you for the time.

Is the motor driven in only one direction or must it be reversible? Is the 10 Amp rating the stall current or the running current?

It is the running current. And we would like the motor to run clockwise and counter-clockwise

Do you need to control speed?
If not, a DPDT relay will do the job.