The primary fire of the disruptor does 30 damage, with no armor penetration. The secondary fire of the disruptor does a max of 130, also with no armor penetration.
To zoom, it takes 1.5 seconds, and to charge fully once zoomed, it takes about 1.9 seconds.
When you charge up, it takes 21 power units out of your ammo pool, and when you fire, it takes out 6 more units, for a total of 27.
Hope that helps. I'm writing a weapons guide for JO, and I've put a lot of work into researching everything.