Metal Oxide Varistor Identification

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Metal oxide varistor identification. How to test a mov metal oxide varistor surge protector. Need some help identify a varistor. Epoxy molding flame retardant to ul 94 v 0 terminals. Normally the mov has very high electrical resistance.
Siov metal oxide varistors b72230m thermofuse varistors mt30 series ppd var pd 2020 01 06 please read cautions and warnings and page 2 of 11 important notes at the end of this document. How to choose the right metal oxide varistor mov 0. Are external components required for hlk pm01. Metal oxide varistors movs are available in a variety of form factors and sizes for a broad range of applications.
Metal oxide varistor grains of conducting zno average size d are separated by intergranular boundaries. Construction square varistor element leaded coating. Help with identify varistor. Testing mov with a dmm all about circuits.
When a high current passes through a mov its resistance value decreases and acts as a short. Help to choose fuse varistor and or tvs diode. If lightning strikes a nearby power line the high voltage causes the mov to become a shunt preventing the. A metal oxide varistor mov is an electronic device that protects an appliance s power supply from voltage spikes and surges in the ac power line.
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