We were using TK part number 9739981 but any 2 pole relay controlled by a delay-on timer would work. Timer control powered from 230vac at LCEREC X3/2 to X3/4. That’s the secondary of the main control transformer that comes right off the mains. 1 relay contact interrupts XM16/1 (car 24vdc) and the other contacts interrupts XM16/3 (controller 24vdc)
You could use any 230vac relay with the coil wired to LCEREC X3/2 and X3/4 and an Artisan timer in series.
Specifically it was the COB24 cards in the COP that were failing pretty regularly on some Resolve cars when the power hiccuped.
