Today we had the building inspector request we change a main breaker in a crouse hinds meter-main vintage 1980's. I believe they were bought out by Murray-Siemans in the 90's. I had a Murray MP-T 100 on the truck , but I am not sure if this is a exceptable replacement.If anyone has a referance I can use I would be very appreciative. The old main was a 2pole 100 JA crousehinds. The common trip tie on the handle was snapped off.