If you separate from your husband can you take the children with you?

If you are the mother you should be able to leave with the children. Depending on your state who ever has the children in their custody more likely gets the children if in a stable environment.

Another Perspective

Until there has been a custody order issued by the court both parents have the same parental rights. Most women who separate from their husbands pending a divorce keep their children with them, however, if the husband objects the wife needs to consult with an attorney or court advocate and try to obtain a temporary custody order.