Acuity Brands / Lithonia LEQ BC 120/277 GY 3W Ballast Controller

The Acuity Brands / Lithonia LEQ BC 120/277 GY 3W is a ballast controller for fluorescent lighting systems rated 120/277 VAC at 3W. It controls up to 50 compatible electronic ballasts via 0-10 VDC signaling, with high-end trim adjustment from 100% to 50%. The controller features integral horizontal intensity adjustment, separate on/off switching independent of light level settings, and an LED indicator for dark-environment location.

Its low-profile polycarbonate faceplate and die-cast aluminum frame mount in standard single-gang switch boxes.

Technical Specifications

• Voltage rating: 120/277 VAC


• Power consumption: 3W


• Ballast control rating: 16 amps electronic ballast at 120V or 277V


• Conductor rating: 600V


• Maximum DC current: 25 mA per controller


• Control signal: 0-10 VDC


• Network wire run: 500 ft. (152 m) maximum with No. 18 AWG wire


• Switch rating: 1200W at 120VAC / 1500W at 277VAC (with specific power control stations)


• Maximum ballasts per controller: 50

Key Features

• Horizontal intensity control with separate push ON/push OFF switching


• High-end trim adjustment: 100% to 50%


• Integral LED indicator (active when dimmer is off)


• Compatible with three-way and four-way multi-location switch configurations


• Low-profile polycarbonate faceplate with no exposed fasteners


• Die-cast aluminum frame; mounts in single-gang switch box


• Gray finish

Ballast Compatibility

• Advance Mark VII®


• Magnetek Ballastar®


• ELI SmartStart


• Motorola Helios™


• Lutron Hi-Lume or ECO-10 ballasts (with LEQ FDBI interface)

Integration Options

• Compatible with LEQ DPC dimming photocell


• Compatible with MS 120/277 3WAY matching three-way switch


• LEQ FDBI interface required for Lutron Hi-Lume / ECO-10 ballast support