disclosed are various embodiments for a portable actuator for actuating a trip button and a close button of a circuit breaker . in one embodiment , the trip button is actuated by a linear actuator that transmits rotation forces produced by a motor to the trip button in response to a trip signal . the close button is actuated by a rotating arm that uses an anti - friction roller to apply a rotating motion to the close button in response to a close signal . the portable actuator is configured to receive the input signals from a remote location with a remote controller that is in electronic communication with the portable actuator .