Review on Siemens Q21540CT 40 Amp Circuit Breaker by Timothy Weems

Doesn't fit old Siemens panels here in the States as I've read from some Canadian customers. A previous review shows pictures of cutouts for different knife sizes. Unfortunately, that's exactly my dilemma with this switch. Too bad too because that's exactly what I need, keep two 15 amp circuits and add a 2 pole 40 amp circuit. The cable is routed, there is no breaker to make sparks and punches. 3 stars for the idea. To update. For everyone who, after some research, is in the same boat, you need the same article number with the addition NC in the name. The Q21540CTNC is the switch you're after for older panels (or Canada I think?). Also, the hammer you need is harder to find in the States (in big boxes in Canada). I bought mine from a specialty store that sells online.