INR7D121S varistors equivalent, zinc oxide varistors.
* Energy rating up to 420 J, single 10 x1000 pulse, (20D751S)
* High surge current ratings up to 10kA
* Wide operating range 130 ~ 680Vrma
* Low leakage c.
* SMPS
* UPS
* AC Power Meter
* Overvoltage Protection Module
* AC Power Taps
* Surge Protection.
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