The Tripping and closing coil are feeded by the battery at 125 Vdc. Do you know how many amperes and how much times is needed to open and close the breaker?
I started a response a while ago, then changed my mind, as I have no documentation to hand [and I don't trust my memory] to confirm whether this particular style of KSO breaker is compressed air close, spring open or big honkin' solenoid close, spring open; but I can't say I've ever heard of the trip coil current going that high with age...interesting.
CR
"As iron sharpens iron, so one person sharpens another." [Proverbs 27:17, NIV]