Operating device and circuit breaker

An operating device includes: a lever rotatable about a rotating axis; a first torsion bar extending in a first direction along the rotating axis; a second torsion bar provided inside the first torsion bar, extending along the rotating axis, coupled to the first torsion bar at a portion located farther in the first direction than the lever, and extending from the portion of coupling with the first torsion bar toward a second direction opposite to the first direction beyond the lever; and a third torsion bar surrounding the second torsion bar, having a tubular shape, coupled to the second torsion bar at a portion located farther in the second direction than the lever, and extending from the portion of coupling with the second torsion bar in the first direction.