![[UK] Found during house renovation](https://i.imgur.com/JUW6g6Y.jpg){kind=link}
There is a key to lock it closed, and the same key will lock it either on or off. In keeping with a Victorian Bell/Butler Board but not near it in the house.
I guess it must be some kind of isolator switch, but I know nothing of its history.
There is a key to lock it closed, and the same key will lock it either on or off. In keeping with a Victorian Bell/Butler Board but not near it in the house.
I guess it must be some kind of isolator switch, but I know nothing of its history.
Guessing by the size of the wires this was meant to switch Mains power and was set to cut/connect both legs at the same time. Since you mentioned a butler call board, it could have been used like this.