Headscratcher Grade Relays?
https://www.delcity.net/store/Hi!Amp,-Bi!Stable-Relays/p_824650.h_824651?utm_campaign=New%20Product&utm_source=hs_email&utm_medium=email&utm_content=59907868&_hsenc=p2ANqtz-_d0VaT67oYQAzv93zEhMRiN7_gE...
Forum Discussion
High-Amp, Bi-Stable Relay, 12V, Single Pole, 600A Continuous (1 MIN)
600 for 1 Minute ?
latching relays made with a ratchet mechanism exist and have been used in RV battery disconnects, coils are only monetarily energized
