china knockoff be crap watch yourself !!!!!!!

as you already know buying batteries and flash memory on ebay from china, its all fake.

so are the fotek relays, many youtube videos of them being tore down and checked.

40 amp will not work with 40 amps.

if you can afford a fotek relay on ebay its fake, the real ones are EXPENSIVE.

so if you need 20 buy 40 or 60 and if you need 40 buy 60 or 100.




my new relay for my spotwelder.
microwave transformer rewound
arduino control

Yeah you need huge sinks on those to get close I run them here at home but not even close to the rated max

how many amps can you get out of a 40 with heatsink?

Not sure. But it Days frsent that heatsink is needed. I run 1w without issues and thats 2.5kw here