EN 355 “Personal fall protection equipment - energy absorbers” stipulates how an energy absorber should be designed and which force it needs to be able to withstand.
A distinction is made here between 4 different types of energy absorber:
Further information on this topic can be found in our entry on lanyard energy absorbers.
Sharp edge-texted lanyard with energy absorber and carabiner hook
Sharp edge-tested kernmantle cable with 2 pipe hooks and an energy absorber