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I have to know what is the function of the LED in the terminal blocks: AB1FUSE435U5XB. This led indicates, voltage presence, or the fuse failure?

Goals and Symptoms

I have to know what is the function of the LED in the terminal blocks: AB1FUSE435U5XB. This led indicates, voltage presence, or the fuse failure?

Causes and Fixes

The LED indicates that the fuse is open (faulty).

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