1PC HFE80V-40-450-24-HTQ2J HVDC Contactor Communication Relay 40A 450VDC 4Pins

You will find that this unbranded relay pairs well with generic controllers, without any branding conflicts or odd fit issues.

What stands out about the unbranded brand is that the contact ratings are printed large, so you can read them fast.

A nice touch is the smooth spring action inside this unbranded relay, which feels reliable without being too stiff.