Review on Siemens Q23030CT 30 Amp Circuit Breaker by Sri Mims

I was short on space in my circuit breaker box so it replaced the breaker that powered my water heater and now also powers a 36,000 BTU multi-zone AC splitter box. I first bought a similar switch at my local hardware store, but it didn't fit (the top/back slots were for old switch boxes, according to an electrician buddy). I also checked Home Depot and Lower in my area but they were out of stock. My panel is a 7 year old Eaton A series.