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Questions about protecting electrical devices from voltage spikes.

1 vote

Is there a device to prevent a main circuit breaker from tripping and give an added layer of...

If you load is a motor, a VFD could be this device where you can set the max current. I have used it myself on an asynchronous machine which was more than capable of pulling more current under high lo …
winny's user avatar
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6 votes

Do I need a MOV in front of AC/DC supply

If your power supply passes already, I don't see any reason to add more components. Sooner or later, one of your customers will experience a surge above the IEC61000-4-5 levels and the power supply br …
winny's user avatar
  • 16.8k