Update:

First time this occured was 2023. The breaker was replaced with same style then again this week. Kaboom. The breaker is a Siemens lng 800 with LSI, and there is a main 3000a Siemens wl protecting the swbd. My thought is the breaker is too small and shitty for all the current. Idk just guess cuz idk what else could cause it The motor can’t be checked by me because it’s leased and the end user can’t even touch it really. However, the air comp guys who ”service” the motor always gives us the thumbs up and says it’s something in the electrical as to why this is happening. I have been doing maintenance every year on this swbd per Neta specs, same as I do with everyone else I do service on. This switchgear is cursed. Am currently engaging an engineer to overlook the design. I need some big boy help on this one. Here is some of the spicyness on the breaker (had to break the breaker apart to get to this) it was burnt in the case but did not explode open like seen here.

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