A ballasted socket which removably accepts PL type fluorescent bulbs is provided for use with lighting fixture bases. The socket includes a socket housing having a side wall, a first end wall, and a second end wall to define a chamber in which the ballast for the bulb is housed. At least one spring arm is provided to engage a slot extending from an opening in the end wall of the fixture base to snappingly mount the socket to the fixture base. In one embodiment, the socket is twist locked into the fixture base and in another embodiment, the socket is push-locked in to the fixture base.