[image] Dear Forum, Can you please help me to identify what specific varistor I need to order to replace this varistor in the image? This is a varistor from a KACO solar inverter, but their service people won’t tell me the spec’s of the varistor. Instead they require me to ship the inverter to th…

If the only thing wrong with the device is a dead MOV, then when you simply remove the MOV the product will work correctly again. Of course, since an MOV is a surge protection device, you should not operate the device for very long without a functioning MOV.

Super! Thank you fellows for these helpful responses. And one more question…can you tell me how to ‘open the jaws’ of this small terminal block holding the varistors to the circuit board? It looks logical just to push on the two square ‘buttons’ with the diagonal lines across them. But if is a deli…

[image] jim1: It looks logical just to push on the two square ‘buttons’ with the diagonal lines across them. Those “lines” are there to provide secure footing for a tool used to do the pressing. See example wago 735 series datasheet here .

Howdy Paul, Thank you so much for this suggestion…regarding removing the old varistor to test if the unit works. So helpful! I am a solar installer/integrator but I rarely replace components smaller than an entire circuit board. But in this case, it is a KACO 7.6 kW solar inverter that took a ligh…

Thank you Rick…seems it is indeed a simple push-button operation. Thank you again! Jim

Help to identify MOV varistor

Power Circuit Protection

Robert_1552 January 28, 2022, 5:51pm 2

Thank you for your questions, 495-4301-ND looks to be the part you are looking for.

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Help to identify MOV varistor

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