Has anyone used one of these and how did you wire it up? I have a LLC switch power supply. Link 500W HIFI Amplifier Switch LLC Soft Switch High Power Supply Single DC Output 24V 36V 48V 60V 70V 80V Replace RingCow H133|Amplifier| - AliExpress
Hifivv audio 100A protection High power supply automatic start soft start protection board of High power amp amplifier|Amplifier| - AliExpress
Hifivv audio 100A protection High power supply automatic start soft start protection board of High power amp amplifier|Amplifier| - AliExpress

I see its designed for a car ( according to the website ) and its Chinese which makes it hard to get a schematic.
I don’t think
I don’t think it can be for a car as it’s showing voltage in as 150v - 240v
Cars run on 12v
I don’t think it can be for a car as it’s showing voltage in as 150v - 240v
Cars run on 12v
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It IS intended for transformer power supply to control inrush current.
Your SMPS already has the thermistor to limit inrush next to the input terminals.
the picture you post shows how to wire it.
AC input - from supply.
AC output - to load.
Your SMPS already has the thermistor to limit inrush next to the input terminals.
the picture you post shows how to wire it.
AC input - from supply.
AC output - to load.