The move is retroactive to Saturday.
As a corresponding move, the Orioles recalled right-hander Stefan Crichton from triple-A Norfolk.
Announced by manager Buck Showalter before their game with the Toronto Blue Jays Sunday, Britton was said to have felt something in his forearm throwing his curveball on Friday.
The 29-year-old has converted 54-straight save opportunities, tied for the second-longest streak of all time.
Britton has five saves this season to go along with a 1.29 ERA and six strikeouts in seven innings pitched.