You may or may not be able to see your children if a Protection From Abuse cases filed against you in Pennsylvania. If you're the defendant in a PFA case, the court can take it upon itself or upon the request of the plaintiff to preclude or prohibit you as a defendant from seeing your child or children. It will depend on the circumstances at hand, will depend on the allegations that the plaintiff is making. A plaintiff on behalf of a minor child can seek a PFA on behalf of the child, in addition, but independent of that the plaintiff him or herself through by seeking the PFA often would impact the defendants ability to see their child or children.
Being accused of a PFA or facing a PFA case as a defendant, especially if there's the custody of children involve is incredibly serious. It can affect both the short and long term. Having an experienced PFA attorney in your corner from as early as possible in the process will help you understand and navigate the process and they can help you best defend against a PFA case.