A:There are many permutations of contact blocks and operator cams that can be combined to yield a large number contact closure sequences. Our TW, HW, and TWTD series are highly configurable. Cam tables in the catalog help with determining what setup will work for you. We will assemble custom contact arrangements and assign a unique part number for each arrangement to allow for future ordering. Contact technical support for details. Normally lead times will be no longer than for a standard model.