I am hoping I can use a MNEPV-300 20A breaker as a 125vdc 2 pole PV input breaker. It is polarized and the one side is jumpered + to - with a copper bar jumper.
I am thinking remove the jumper and install the PV in to the breaker and the load side to the AIO PV input.
The breaker polarity should remain correct. The breaker has a copper jumper for a series connection I believe for the 300 volt rating, the two tabs are ganged together.
Will this work? I already have it and it would save me money.
That should work yes. We typically take the 2 pole 600V breaker and remove the jumper and use it to break PV+ and - of 600V as it is all one circuit this works well
Thank you for clarifying FNG. 8)