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If your breaker is tripping it is either a bad breaker or shorted run windings
A simple check is to first REMOVE POWER to condenser, if breaker is tripped you shouldn't have power. Remove...

If it is GMP or GMT series the blue wire is your common
Attach
R to R
G to G
Y to Y
W to W
Condenser Wire one side to Y
THE OTHER TO BLUE

Call for service have tech check for liquid restriction or overcharge with restriction.

Could be bad contactor coil. Or grounded secondary wire to contactor.

Is the rotation clockwise shaft end or lead end?