Fritz Kubler 3.220.401.084 Hour Meter, Type H57.55, is a 7-digit device designed to record cumulative operating hours for electrical equipment. It runs on 100–130V AC at 60Hz and consumes 0.7 VA, with a 7-digit display for precise hour tracking. This makes it suitable for monitoring runtime on motors, pumps, generators, and other industrial machinery to support maintenance scheduling.
