Leviton Trimatron rotary dimmer knobs rated 600 W, in white and light almond. The wattage rating is the total of every bulb on the circuit, and derating matters on a multi-gang box where dimmers sit side by side. The bigger trap is bulb compatibility: a standard incandescent-rated rotary dimmer will often buzz, flicker or fail to dim LED or CFL lamps, because the load is a fraction of what the dimmer expects. Check that the lamps you intend to run are marked dimmable, and confirm whether the circuit is single-pole or three-way before you pull the old device.
