Solaframe 2000 maximum pass through current?

Hello all,

I have scoured the manual and datasheet for this fixture, but I have not found any answer here. Since the Solaframe 2000 has power throughput, there must be a maximum amount of current that connection can handle before it blows the fuse or burns up. Does anyone know how much current that maximum throughput is, and consequently how many of these fixtures I can daisy chain together before I blow one up?

Thank you all for your time.