Mersen/Ferraz Shawmut ACDMM Auxiliary Contact Module – 15A, 120V AC, 1 NO/1 NC, for UltraSafe™ Fuse Holders

The ACDMM is a field-installable module that allows a PLC or control circuit to "know" the status of a fuse holder. It tracks the position of the fuse holder’s handle; if the holder is opened (or in some configurations, if the fuse blows and triggers a mechanical trip), the auxiliary contacts switch state. It features a "Make-Before-Break" or standard changeover operation depending on the specific mounting.