It happened during the morning rush hour around 7:30 a.m., SEPTA said.
"Amtrak mistakenly routed a Center City-bound SEPTA Regional Rail train to a dead track that was not receiving power," a spokesperson wrote.
The marooned passengers were rescued when a second train was brought in and shuttled them to 30th Street Station, SEPTA said.
No one was injured and there was "never a chance of a collision," the spokesperson added.
Click here to follow Daily Voice Allentown and receive free news updates.