The third generation bell was introduced sometime in 1993, and was the last bell that ASC had made. It's design is similar to the second generation, albeit much shorter. It sounds similar to General Signals types 1 and 2, just like previous generations.

However unlike the first and second generations, it is an onmidirectional bell that can broadcast sound 360° around it.

This bell was used heavily by the Chicago & Northwestern Railroad (CNW) and many of these bells can be found remaining in the states of Iowa and Illinois under former CNW trackage. It is also the most common of all the ASC generations.

Very little is known about the third generation bell, including weight, voltage, operating temperatures, and so forth.

It is louder sounding than a traditional General Signals electronic bell, and is likely to have its tone adjusted just like the General Signals electronic bell can. ^{(NOT VERIFIED)}

Production for these bells stopped when ASC went bankrupt in 1994.