June 7, 2011
Hello NoMagyver, I’m Newf from our How-To Community.
This spa panel comes with a 50 amp double pole GFCI breaker installed. The panel main lug limit is 125 amps. Use standard additional GE brand breakers to fill additional needed spaces. You should not need part numbers, GE only makes one style of residential breakers.
Here are more detailed specs on this panel from the GE library:
I hope this helps, Newf.
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