12v Latching Contactor 100A+

[Switch]

Evening all,

I'm looking for a 100A or more latching contactor (or relay...) to operate as a main power cut out.

So far the only thing I've found is this - https://shop.gwl.eu/DC-Contactors/DC-Power-Latch-1...

But it's out of stock currently.

Does anyone know of anything that would do the job?

I've found non-latching contractors everywhere, but nothing latching...

[Rozzers]

Use a 12V To trigger the big contactors coil, then an auxiliary contact to sustain it - or will your 12V not be present after that?

Or Switch the coil switched through a small latching relay

[Switch]

Rozzers said:

Use a 12V To trigger the big contactors coil, then an auxiliary contact to sustain it - or will your 12V not be present after that?

Or Switch the coil switched through a small latching relay

The 12v won't be present after actuation. Which is the hang up here.
And I don't want to drain power (the coil) when the contactor is closed...

Hence latching.

[ian332isport]

I don’t know what vehicle this is for, but I suspect 100A way too low for starting a car.

You need to be looking at something like a motorsport kill switch. Cartek do a couple of different electronic versions, but not cheap. That said, anything that will switch that much DC current is going to be expensive.

https://www.cartekmotorsport.com/battery-isolators...

[Penelope Stopit]

Don't visit here often these days, we meet again by chance

Here you go https://www.arc-components.com/0-728-02-durite-12v...

Bear in mind there are definitely cheaper ones to be found from other manufacturers, did have one bookmarked last year but now binned.....shop around

Use the relay contacts to supply a continuous current master switch solenoid (momentary solenoids quickly burn out)

The above type of relay has a mechanical mechanism that allows it to change over every time a button is momentarily pressed to supply its coil