FPE NC120N U 20A 1P 120V {AIC}K USED
A nice touch is the FPE logo placement the breaker looking tidy in your load center.
FPE NC120N N 20A 1P 120V {AIC}K NEW
The FPE brand makes it easier to match existing hardware, and you will find that compatible options are available.
FPE NC120N U 20A 1P 120V {AIC}K NEW SURPLUS
If your panel already uses FPE, this circuit breaker fits right and the brand makes identification simple.