The original switches were made by Cuttler Hammer, although almost everyone thinks that the CH marking on the switch is for Cole Hersee. I searched the Cuttler Hammer switch catalog looking for the switch, and gave up, because without a part number, it is impossible to determine where in the catalog the switch is located, or if it were still available. There was also an aluminum spacer that was located behind the switch it the door didn't have enough contact with the tab to depress it fully.