##  [Surge Protective Device](/surge-protective-device) 

  ##  [Surge Protective Device](https://engineering.quantumdictionary.io/surge-protective-device-0) 

  

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**Engineering & Applied Technologies Dictionary**

 







 

 

 

 



 

 

 

 

Definition

An electrical device installed on a power or signal conductor that limits transient overvoltages by diverting surge current to earth or by clamping voltage to a specified level, thereby reducing the amplitude and duration of voltage transients seen by downstream equipment.