A non-explosive tension release actuation device includes an initiator system and a housing base attached to the initiator system. The device also includes a carriage assembly positioned at least partially within the housing base. The carriage assembly includes a carriage unit, a first jaw, a second jaw, a first rocker arm, and a second rocker arm. The first rocker arm and the second rocker arm are attached to the carriage unit and to the initiator system. The device further includes a load attachment unit positioned at least partially within the carriage unit and between the first jaw and the second jaw. The first jaw and the second jaw are configured to swing away from the load attachment unit in response to a downward motion of the carriage unit relative to the housing base.