(a) In an action for separate maintenance, the court may order all or any portion of the temporary or final relief that the court may order in an action for divorce, other than a divorce.
(b) During the pendency of the action, the court has the same powers to make temporary orders as the court would have in actions for divorce, insofar as those powers are applicable, on behalf of either spouse.
(c) Any order entered in the case is effective during the time the court by its order directs, until further order of the court.