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Am pretty sure it is not simple to bypass main breaker (to use a conventional one) if you want to keep original gauge & control circuitry. The 6 18g wires that go in & out of breaker are involved in a few circuits.

That is what I would have figured too, but the parts TMs list them as having the same NSN, so I thought it was controlled by R-3 setting. Is the TM wrong? (would not be the first time). Is there a way to change set point? Others seem to have agreed it is the same. I really don't know.

I did check CT1 and resistance was in spec. Reconnection switch on this unit looks new and freshly installed, making me wonder if it was installed correctly. I don't know about CT31 and 32, will have to look into that.

Thanks Peter, that's interesting about the paralleling in the breaker. Another note, on the output box that I was having troubles with, changing the R-3 adjustment made no difference, it was holding at about 3 times the suggested setting of .6 amps even though I was moving the R-3 shaft. (as...

I was having same problem this summer with an 003 that tripped at around 30A. I did swap breakers out of a 002 that would bog down on overload without tripping breaker. I have since adjusted the R-3 on that 002. There was something else wrong with the control box circuitry, it was not the...

I'm following this. Learned something about it when my new 003 would trip breaker at less than 100% load. The breaker is the same NSN for the 002 as the 003, from what I can tell from TMs and by comparing actual parts. Wouldn't the R-3 circuit preclude just putting in a standard breaker? I...