A safety brake device (40; 140; 240; 340; 440; 540) for use in a conveyance system including a guide rail and a component moveable along the guide rail, the safety brake device (40; 140; 240; 340; 440) comprising: a safety brake moveable between a non-braking position where the safety brake is not in engagement with the guide rail and a braking position where the safety brake is engaged with the guide rail; an actuator (52; 152; 252; 352; 452) for the safety brake, the actuator (52; 152; 252; 352; 452) comprising: a mounting portion for mounting the actuator (52; 152; 252; 352; 452) to the component, a pad (54; 154; 254; 354; 454) arranged to be moveable relative to the mounting portion between a first position spaced from the guide rail and a second position in contact with the guide rail, and at least one biasing member configured to apply a biasing force to move the pad (54; 154; 254; 354; 454) from the first position to the second position; and a linkage mechanism coupled between the safety brake and the actuator (52; 152; 252; 352; 452) such that, when the mounting portion is moving downwards relative to the guide rail, movement of the pad to the second position creates an upwards reaction force transmitted by the linkage mechanism to move the safety brake into the braking position; wherein the pad (54; 154; 254; 354; 454) comprises a ferromagnetic material and the actuator (52; 152; 252; 352; 452) further comprises an electromagnet (62; 162; 262; 362) operable to apply a magnetic field to the (54; 154; 254; 354; 454) and thereby create a magnetic force acting against the biasing force to move the pad (54; 154; 254; 354; 454) towards the first position; characterized in that: the pad (54; 154; 254; 354; 454) is connected to a support (58; 158; 258; 358; 458) which is movable upwards relative to the mounting portion (42; 142) in response to the upwards reaction force. a safety brake moveable between a non-braking position where the safety brake is not in engagement with the guide rail and a braking position where the safety brake is engaged with the guide rail; an actuator (52; 152; 252; 352; 452) for the safety brake, the actuator (52; 152; 252; 352; 452) comprising: a mounting portion for mounting the actuator (52; 152; 252; 352; 452) to the component, a pad (54; 154; 254; 354; 454) arranged to be moveable relative to the mounting portion between a first position spaced from the guide rail and a second position in contact with the guide rail, and at least one biasing member configured to apply a biasing force to move the pad (54; 154; 254; 354; 454) from the first position to the second position; a mounting portion for mounting the actuator (52; 152; 252; 352; 452) to the component, a pad (54; 154; 254; 354; 454) arranged to be moveable relative to the mounting portion between a first position spaced from the guide rail and a second position in contact with the guide rail, and at least one biasing member configured to apply a biasing force to move the pad (54; 154; 254; 354; 454) from the first position to the second position; and a linkage mechanism coupled between the safety brake and the actuator (52; 152; 252; 352; 452) such that, when the mounting portion is moving downwards relative to the guide rail, movement of the pad to the second position creates an upwards reaction force transmitted by the linkage mechanism to move the safety brake into the braking position; wherein the pad (54; 154; 254; 354; 454) comprises a ferromagnetic material and the actuator (52; 152; 252; 352; 452) further comprises an electromagnet (62; 162; 262; 362) operable to apply a magnetic field to the (54; 154; 254; 354; 454) and thereby create a magnetic force acting against the biasing force to move the pad (54; 154; 254; 354; 454) towards the first position; characterized in that: the pad (54; 154; 254; 354; 454) is connected to a support (58; 158; 258; 358; 458) which is movable upwards relative to the mounting portion (42; 142) in response to the upwards reaction force.