Peabody says...

But, I haven't been able to find anything equivalent at
Mouser.

Ok, I may have lied.

On page 1896 of the pdf catalog, I find:

Omron G2RL series
8 amp rating, same size and pinout

Omron part: G2RL-24-DC12

Mouser part: 653-G2RL-24-DC12

Looks like this should work. The only question would be if
there is a speed issue - how fast it switches.