Power in 2k is V^2/R =3D 80 Watts.
This seems "a little high" [tm]

If  Vcc / Vdd is available at reset time then a base pullup to there will
save you the HV drive resistor.

As Vasile says re Rb - **YES**
(Even in low voltage circuits it's a really good idea to have some high
value R there)

I_2K max =3D 400V/2k =3D 200 mA.
What order of output current are you switching?
That allows 2A at Beta of 10 (800 Watt) and 20A at 400V at Beta of 100 (8
kW).


          Russell
--=20
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