SPDT relay that toggles each time power cycles?

[funnyguy]

I'm wondering if there is such thing as a spdt which reverses upon being energized/de-energized? So each time a voltage is disconnected then reconnected the switch flips once and locks in place till the next disconnect/connect.

I'm interested in this for a low voltage dc circuit.

 

[Mike_In_Plano]

Yes, there is such thing. Look under latching relay.

 

[wirenut]

they are used in alternating pump ejector system and are called alternating relays or contactors.