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What exactly happens if the operational temperature is exceeded and the psu has OTP protection ? Does the psu stop immediately or functions but at a lower efficiency or the continuous output falls ?

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  • Some brief searching seems to suggest when OTP is triggered, it'll turn off; it won't function at a reduced capacity. – LawrenceC Dec 1 '20 at 16:42
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From Coolermaster

OTP (Over Temperature Protection): Shuts down the power supply when the internal temperature exceeds the maximum safe operating temperature.

That seems pretty clear. It will simply switch off.

You very probably wouldn't want a PSU to drop to lower voltages or even ampages. That may be somewhat chaotic.

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