I have a Bryant panel and I need to replace some duplex breakers and wanna make sure I put in the right ones. The ones I am replacing are original Bryant type BRD BD20-20 & BD15-15. I have Cutler-Hammer duplexes that are type BRD but the numbers are BR20-20 & BR15-15. They do seem to be a little different. Can I use these since they are type brd or do I need to get something else?