Sorry billy, but the premise of the question is quite incorrect.
"Most bipolar transistors have a max rating at 24 volts and power transistors max rating are generally ?"
This is just not accurate.
For operation in what is called the 'linear' range', biasing is quite important from the signal distortion point of view; However when used as a switch, the ratings depend very much on the bias AND the drive conditions. It is quite typical for a transistor to have a Vce rating of say 24 volt with an open circuit base, but with a Vbe resistance of say 1000 ohm, the Vce rating(Vcer) is increased to say 50 volt.
The data sheet will often show a range of collector to emitter voltage ratings; Vceo, Vcer, Vcex, Vce sus, and all these parameters are for the maximum voltage between collector and emitter but with different base emitter drive configurations.