Mechanical fuse, a neck cord comprising a mechanical fuse and a method of connecting a mechanical fuse to a neck cord

A mechanical fuse for a neck cord comprising:

• a rupture element, the rupture element comprising a break plane and first and second coupling means at either side of the break plane, the first and second coupling means being arranged for connecting to the neck cord, the rupture element being arranged to break at the break plane when a pulling force acting on the rupture element in a predetermined direction exceeds a predetermined fuse force;
• and
• a housing being releasably coupled to the rupture element wherein the housing is arranged to engage with the rupture element at either side of the break plane to prevent the rupture element from bending wherein the rupture element is arranged to break in a first portion and a second portion such that after breakage the pulling force causing one of the first and second portions to be decoupled from the housing and slide away from the housing thereby opening the neck cord.