At 800V, your coil is overloaded by a factor of nearly 50 - not good!
If one ignores the unknown inductance of the coil and treat it as a purely resistive load (justifiable for a ball-park estimate if its core saturates in a time that's short compared to the pulse length), the pulse will dissipate 64 Joules in the copper of the coil. Assume the heat loss during a 30 ms pulse is negligible. To determine if the coil has any chance to survive, you'd need to calculate the expected temperature rise from the mass of copper present and the specific heat capacity of copper, then, assuming max. ambient temperature, see if that exceeds the max. temperature rating of the coil insulation. If you cant weigh just the coil, estimate it from the coil volume assuming close packing of the turns leaves 10% waste space.
I suspect that the results wont be favourable and you will need to implement some sort of current control as Duak suggests, to maintain a safe current in the coil for long enough for the mechanism to trip.
I'd also be concerned about layer to layer insulation breakdown at seven times its rated voltage.