If you are located in Europe I would suggest J4bberwock for breakouts. Quality is great (I have been running 2880 breakouts and cables from him for years)

https://bitcointalk.org/index.php?topic=738527.0

EU based buying from USA with carriage and import taxes can get expensive.

Given how many Amps you are running through this I would be very wary of getting cheap no name from ebay.

Hope this helps

Andy