How Do Surge Protective Devices (SPDs) Work? | nVent
https://blog.nvent.com/erico-how-do-surge-protective-devices-work/
How Does A SPD Work?SPD Categories Or TypesSurge Protective Device Performance Features to KnowSPD Classes Or TypesLearn More About Surge Protective DevicesIn the most basic sense, when a transient voltage occurs on the protected circuit, an SPD limits the transient voltage and diverts the current back to its source or ground. To work, there must be at least one non-linear component of the SPD, which under different conditions transitions between a high and low impedance st…See more on blog.nvent.comEstimated Reading Time: 8 mins
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