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New breaker stress test

I've deliberately burned up power resistors with my Sencore PR57 before but this one was crazy. It smoked a little at first and then just glowed like this for about 10 minutes, slowly drifting while I kept adjusting for the maximum constant load.

 

I blew the original fuse by re-setting the magnetic breaker a couple of times in quick succession. After this I was unable to find a good replacement; they were blowing left and right under the slightest stress.

 

I shopped around for a good 4A breaker, avoiding anything from China as usual. I was surprised to see that the fuse holder was connected to the transformer secondary, but someone who knows more about these probably wouldn't be.

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Uploaded on June 27, 2019
Taken on June 25, 2019