RCD Accidental Trigger Guard

This is to prevent accidental physical triggering of a non-integral RCD, without affecting its normal operation in any way.

I live in a block of flats (or apartments, if you prefer) where there is a communal services cupboard for everybody's gas and electricity meters, and for the consumer units (fuse boards) for all the various communal and private circuits within the building. It's kept locked but the key has to hang outside for access by the emergency services.

Some of the meters are of the "pre-payment" type, where a resident puts credit onto an electronic card which is then inserted into their meter. People need to be able to get in and top-up the meter at any time of night or day, So it's basically open access to all.

To make matters worse, and despite a proliferation of signs and notices to the contrary, the cupboard gets repeatedly used and abused by people storing umbrellas, muddy shoes, gardening equipment, parcels, and anything else they fancy. These are usually th