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Quality panel meter must be used with a 100:5 ratio current transformer (CT).

These are commonly called "donuts", since they are shaped like a donut (round with a hole in the middle).

You can NOT wire the direct current through this meter!

Replaces Onan, Yokogawa and other 3 1/2" meters of this style that were popular in the 70's and 80's.

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  • Part #: 250340LSPK