This system will get you the part number of the specification you are after.
Single phase, AC85V-AC264V Single phase, AC170V-AC264V
300W, 4 Slots (The input-output terminal are facing) The input side for 300W, 450W, 600W can be set to the output side.In that case, select the "INPUT" in slot4 for 300W and slot5 for 450W/650W, selecting the output module. 450W, 5 Slots (The input-output terminal are facing) 650W, 5 Slots (The input-output terminal are facing) 900W, 6 Slots (The input-output terminal same side)
The input side for 300W, 450W, 600W can be set to the output side.In that case, select the "INPUT" in slot4 for 300W and slot5 for 450W/650W, selecting the output module.