Mine are 60A 150vdc mppt charge controllers but even a 40A 150v would be ok (250v has got more headroom and would allow adding a fourth series panel later if space permits) 60A is a bit overkill with only 600W on a 24v battery bank- a 60A one can handle 1500W of panels at 24v!!!
Upside- a 60A 250v controller is running WAAY under its maximum limits and would have a nice 'lazy' life, no stress... so long service life compared to a unit running 'flat out' all day every day...
The 'overhead' I prefer to have is a little low on a 150v controller on your panels though (I personally prefer to keep the combined Vocs 20% under the PVmax- your particular panels are crowding that a bit more than I like at 139.8v at STC (20% headroom on a 150v max is 0.8 x 150v = 120v)- 'probably ' wouldn't be a problem where I live, but if you get a lot of snow where you are, the cold weather increases production greatly, and it could become an issue...
(I have the opposite problem- summer is my poorest production time almost- basically equal to winter here- with air temps over 40C(100F) for weeks on end and panel temps rising past 80C, just when i run the A/C, my panels have dropped from a rated 250W down to 195W due to the heat...)
