I came across this today. If it can even handle 150A (with a wire change) then it would work for a complete system safety shutoff. With the existing 12AWG it definitely wouldn’t handle what is claimed.
how can it be used as safety shutoff?
You could install a reed switch in series with the main switch. Therefore when you fall off the board you will kill the power completely.
Interresting, loss and wire gauge would be good to know. It’s also available on ali: https://www.aliexpress.com/item/2018-New-Arrivals-HGLRC-Flipsky-AntiSpark-Switch-Pro-280A-for-Electric-Skateboard-Rc-Car-Multirotor-Spare/32922747224.html?spm=2114.search0184.108.40.206234843rxKimn&ws_ab_test=searchweb0_0,searchweb201602_4_10065_10068_10059_10884_10887_10696_100031_10084_10083_10103_10618_10307_10134,searchweb201603_60,ppcSwitch_5_ppcChannel&algo_expid=be1bc5c5-464b-47ef-b00e-0f33405a445f-0&algo_pvid=be1bc5c5-464b-47ef-b00e-0f33405a445f&transAbTest=ae803_1&priceBeautifyAB=0
do you think this button must be constantyl pressed? I did not find a manual, but I assume it must be pressed one time to activate. So the reed would not work?
But cutting battery power under load could kill the ESC, or am I wrong?
depends on the button, I would say it should be a latching button, means it has 2 positions. I found this schematic from a similar antispark switch. sorry forgot the link: https://picclick.fr/FLIPSKY-Anti-Spark-Commutateur-Avec-Fusible-40A-Pour-RC-223058636577.html#&gid=1&pid=1
Personally I always release the remote before falling so for me that wouldn’t be an issue.
I can’t seem to find any information relating to cutting power at full load though, so I’m not sure what the implications would be.
I cut the power by a relay to my vesc under full load (1.8kW) several times, nothing was damaged. Cutting the motor wires is dangerous, cutting the power supply should not be any issue.
I just came across these switches too. I was about to order one then thought I’d search on here before adding to my growing pile of unused crap. Trying to break away from my buy first ask questions later habit.
Did anyone try one of these? It looks like a pretty simple solution.
There’s a much better one that can actually hold up to the claims made by a company in Europe: https://shop.3dservisas.eu/products/fatboy-mini-sparky-switch-50a-200a-100v-pre-charged-anti-spark-switch-with-push-to-start?variant=12506551025757
Are these switches good enough to be used as power cutoffs? I’m looking for an easy solution to cut the power on my board when I fall! Could I connect a Reed switch to it?
If you ask the designer (contactable through the website), I’m sure he will be able to answer that. He designs quite a few things for the eskate community.
Maybe, but perhaps not. I used a kill switch to short the gates of the fets to source, using a BMS which was rated to be able to switch off 80A and it killed the fets by the avalanche effect i guess. So by switching off under full load, the fets became shorted and there was almost no effect. So in the moment you may need it, it fails.
Nobody mentions in any description of anti spark switches that you may use it for switching off under high load. Maybe it could work when installing a large capacitor or TVS at the input to limit the voltage rise.