Bridgelux rates the 560mm max 1400mA, but they can handle alot more. I've pushed 2400mA through them only mounted on 1" U channel from lowes. For an entire flower run. With only a fan blowing on the back. Nothing else. Mounted with thermal tape. Not 1.problem. they can be over driven 2x's but I wouldnt recommend it without really good cooling.
I'm running 16 strips total. 8 on HLG-240H-c1400a and the other 8 on the same driver.
21.6vdc @1.4A for a total of 30.24w per strip. For a total of 483.84w but I use A type drivers. 8 strips on the hlg-240h-c1400a will hit 252w. For a total of 504w if I wanted. But I dont need that much. I'll probably run them around 450w total.