Metal cased fusebox with four concealed ceramic fuses. Originally installed in the early 1970s.
Similar to this other example.
The cover is secured with the two small screws to the left of the switch. The cover can only be removed when the switch is off.
The top and bottom have various blanks which can be removed to allow wiring to enter. In this example, most of the wiring entered through the large hole in the back.
The front cover has the 'MEM' logo embossed into it.
The white stripe along the top is the inevitable emulsion paint.
The fuses are of different ratings, each being a slightly different size to prevent them being inserted into the wrong positions. Ratings in this example are 30A, 30A, 15A, 5A.
The ceramic inner can be completely removed, leaving the empty box.
The single earth terminal is at the top centre, and still has a single green insulated wire attached to it.
Incoming supply wires connect to the two terminals bottom right, and individual circuits connect to the smaller terminals at the top and bottom of the four fuses.
Circuit neutrals connect to the terminal strip above the main switch.
The large metal strap on the left side and the smaller metal hook on the right centre are used to secure the ceramic piece into the metal case.
The main switch is locked in position with the cover removed, so it cannot be turned ON unless the cover is in place. The lock is released by the small metal tab to the left of the switch - the cover presses this tab in to release the switch.
The shape of the cover prevents the cover being removed when the switch is On.
These are in excellent condition, suggesting they have never blown.
The metal box has 'MADE IN ENGLAND' and 'REGD. DESIGN' embossed into the back.