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This Westinghouse LA3600F breaker is a takeout from a huge DC power supply that I bought on eBay and parted out. I believe that that power supply was used very little and the breaker likely never tripped. Behind the breaker, there was a huge size 6 contactor also, and that contactor was what switched the primaried on the three phase transformer. So very likely, the breaker contacts are in great shape.
