ETFV25K420E4 varistors equivalent, siov metal oxide varistors.
Wide operating voltage range 115 … 420 VRMS Self-protected under abnormal overvoltage conditions Very high surge current ratings of 20 kA Approvals UL Applications Air co.
Air conditioner, refrigerator, TV, etc. Power meter, inverter, telecom equipment, etc. Transient voltage surge suppresso.
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