Well, they make interrupter-type actuators for both DC and AC bells In fact, many such products are labelled for use on either AC or DC
The important thing to observe is the actuation of the bell ringer an
the degree of arcing at the interrupter contacts. Assuming your bel is a typical interrupter-type, in which the current through th electromagnet coil is interrupted by contacts mounted on the clappe arm that are pulled open for each stroke of the clapper, I'd sugges just supplying the bell with a variable voltage supply, either AC o DC, whichever you want to supply to the finished installation, an increasing the voltage until you get a pleasing, reliable ringin action with the least arcing at the contacts. I'd try both AC and D and see which seems to give the best actuation with the least arcing. In a simple bell with only an electromagnet and interrupter contacts you won't hurt it by trying both
You will inevetably get arcing (unless there is some sophisticate
suppression provided, which I doubt), because the contacts ar interrupting the current flow through an inductor (th electromagnet), and the collapsing magnetic field induces a voltag in the coil that increases until something breaks down - hopefull (and normally) as a spark at the gap at the interrupter points an not an as a damaging arc between winding layers inside th electromagnet coil. Excessive voltage will lead to more franti clapper actuation and more arcing because the interrupted current i higher with a higher voltage. You just want to achieve a reasonabl balance between reliable, pleasant sounding operation and minima arcing for longest contact life
Don't worry. Hope this helps
awrigh