1. Voltage unloader
  2. Surge protector
  3. Heat protector
  4. Current unloader
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1 Answers

Answer: Option 2

Surge Protection Device (or surge suppressor or surge diverter) is an appliance or device designed to protect electrical devices from voltage spikes. A surge protector attempts to limit the voltage supplied to an electric device by either blocking or shorting to ground any unwanted voltages above a safe threshold.

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