Protect a 21V 2.4A DC system from an AC input

M

Thread Starter

mike

Hi,

does anyone know if there a way to protect a 21V 2.4A DC system from an AC input by using a fuse or other means?

I have a DC LED circuit that must be plugged into an DC adapter before plugging it into an 120V AC source, but I am afraid end user will plug it into an 120V AC source before they plug the DC adapter on.

Can I use a resettable fuse for this?
 
No, use a different shaped plug and a warning tag.
If that does not work sell them a replacement unit.
 
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