I have a variety of circuit breakers (see different photos).
In the first photo the current rating is the circuit breakers are low voltage (4/5/10/15A).
In the second/third photo with up/down switch they are for the primary side (115V). Voltage and current are shown (except the bottom one is washed out. I think it is 5A at 28V).
$10 for any two or $40 for the lot.