The step file is designed to hold two MC4 power connectors and keep them from slipping out.
I printed vertical in ASA for and then epoxied it to the back of a portable solar panel.
If you need to hold more or less connectors, I have attached the Fusion 360 file and the BracketCount parameter can be edited as needed.
Instructions to change the number of holders in Fusion 360:
MC4 Bracket - Programmatic.f3d in Fusion 360 S and then type Change Parameters and select the entry
The author marked this model as their own original creation.