Phaneuf and forward Nate Thompson go to L.A., which sent forwards Marian Gaborik and Nick Shore to Ottawa. The teams announced the trade Tuesday night after the Senators' loss to the Pittsburgh Penguins.
The deal gives the Kings more depth on the blue line as they assume the final three-plus years of Phaneuf's contract, though the Senators are retaining 25 percent of his salary and salary-cap hit. The 32-year-old Phaneuf has 16 points in 52 games this season and 478 in 954 games during his 13-year NHL career.
Justin Faulk's three goals — his first career hat trick — came in a span of 12:21 as Carolina raced out to a 5-0 lead and he became the 10th defenseman in NHL history to score a natural hat trick.