Division 17 Components for machinery designed for lifting and/or lowering persons between different landings and included in the following list:

devices for locking landing doors;

devices to prevent the load-carrying unit from falling or unchecked upwards movement;

overspeed limitation devices;

energy-accumulating shock absorbers,

• non-linear, or

• with damping of the return movement;

energy-dissipating shock absorbers;

safety devices fitted to jacks of hydraulic power circuits where these are used as devices to prevent falls;

electric safety devices in the form of safety switches containing electronic components.