A device (1) is described for braking the fall of a load comprising a sling (2) and a braking element (3, 30), said sling (2) comprising a first end (21) constrainable to an anchoring point; a second end (22) constrainable to said load; a folded section (23) comprising a first portion (23a) of said sling (2) reversibly joined to a second portion (23b) of said sling (2), said folded section (23) providing a resistance to the separation of said first and second portions (23a, 23b). The sling further comprises a first free section (24) comprised between said first portion (23a) of said folded section (23) and said first end (21); and a second free section (25) comprised between said second portion (23b) of said folded section (23) and said second end (22). The braking element (3, 30) comprises a plurality of passages for said sling (2), said first free section (24) crossing at least one first passage (3a), said second free section (25) crossing at least one second passage (3b), so that said first portion (23a), as a consequence of the application of a traction force (FT, FT′) higher than a threshold value to at least one of said two ends (21, 22), separates from said second portion (23b) and crosses said first passage (3a), and said second portion 23b crosses said second passage (3b).