Circuit breaker cutaway - photo

[DIYSwede]

-Cutaway before use, that is... Nice.

This is another <200 Amps 400 VAC 3-phase circuit breaker (exploded view) after final use:



Pretty decent exterior, right? Opening up by drilling out the rivets shows the mayhem...



Note the impressive copper blob on the contact point, the heat witness marks & oxidation of the flash arrestors.

"-Just another day at the office."

Cheers
Johan