The present invention relates to an Breath actuated inhaler (BAI) actuator, comprising: a loading element capable of being loaded with an actuation force, a breath actuated trigger mechanism arranged to counteract the actuation force of the loading element, and to fire the actuator by releasing the actuation force of the loading element in response to an inhalation breath, and actuation locking means moveable between a locked position wherein it relieves the actuation force from the trigger mechanism setting the trigger mechanism in a neutral position, and an armed position wherein the triggermechanism is set in an armed position.