Need to substitute a fusible resistor in an inrush limiter in a PSU
Using 10W resistors or more is preferred over looking for non-std values.

I would consider an ICL to be a better solution with a 20 to 30 Ohm range.   With 600uF and 20 Ohms you have a 12ms time constant yet the relay time is 1 second so a slower RC time constant is workable with 30 Ohms reduced stress on the Caps and still full charged after 20x Tau =RC .  Observe the max rated current for the holding current as less important as the Relay bypasses the R after 1 sec but may offer less protection if the system power cycles on/off rapidly in a few seconds.

https://www.tdk-electronics.tdk.com/inf/50/db/icl_16/S236.pdf