I’m sure that could work just excellent in your case and your configured setup!
And the major benefit imho is that it’s just swap-able because it has the exact form factor.
But nuance your advice a bit. Besides have u tried heat up all 3 heaters at full blast from cold to hot? Or you first heat the bed, and then heat up the nozzles? Because imho that’s just going to fail and reset your machine… The 300(330) watts just isn’t enough to power it safely.
You just don’t know what other things they have connected, or what situation they have going on.
Besides the HRP-300-15 is actually a 330watts psu (Thats just weird but it’s just the fact… look at the data sheets)
But I want to add just a tiny detail on the 330 watts psu and that’s the following: a psu has a derating curve linked to the environment temperature its working in.
From the HRP-300-15 datasheet
In my specific case the printer is in a sound(heat) insulated box. And when I’m printing big ABS objects its gets insanely hot inside…
My thermometer LCD turns complete black at around 53°C which happened more than once…
But by going of on the second nozzle data and correlating this a bit I think its safe to say it won’t go any much higher than around 60°C
So if I would use the 330watt one it would only be able to deliver about 74% lets say 75% give or take…
(330 / 100) * 75 = 247.5
So in that case the 330 watt can only provide 247.5watts of juice, which is just to little to safely run the thing.
The rsp 500 has exactly the same curve, at 50 starts degrading with a limit at 70.
But the math gives us
(500 / 100) * 75 = 375
375watt is the maximum output which is good enough with some spare watts for a good nice rest
Besides, knowing the psu is constantly stretching itself isn’t a nice thought…
Besides the 330watts cost 82,31€
The 500watts costs 111,09
That’s a difference of 28,78 euro you should decide if you want some spare and imho “Safe” watts or u want to drive with a motor constantly against the rev limiter…