Klixon Circuit Breakers P/N 2TC12, 2TC14 and 3TC14. 
Amperage's from 1 - 10 available. These are used commercial aircraft circuit breakers, single-phase, miniature ambient compensated and trip free. High vibration resistance.

They come complete with the mounting washer, nut, and terminal screws with lock washers.
Each breaker will be load tested prior to shipment 
For combined shipping of various models please see the descriptor below to request an invoice
Note:
2TC12 breakers are 1/2" mounting opening
2TC14 breakers are 9/16" mounting opening
3TC14 breakers are 9/16" mounting opening