LONDON — The Swiss bank UBS said on Wednesday that it would pay more than $500 million in fines to the authorities in the United States for its role in the manipulation of currency markets and benchmark interest rates.

UBS said it would not face a criminal charge over currency misconduct but would be required to separately plead guilty to a criminal charge for its prior conduct over the manipulation of the interest rates, including the London interbank offered rate, or Libor, after the Justice Department tore up a 2012 nonprosecution agreement.