Instruction Manual

Page 3 of 9
DB - 612 LIGHTBAR DIMMER
Version: 0.6 OWNERS MANUAL 01/20/2005
www.lightronics.com
Lightronics Inc 509 Central Drive Virginia Beach, VA 23454 Tel [phone]
MOUNTING ADAPTER INSTALLATION
DB - 612
LOCK
WASHER
NUT
1/2" DIA. BOLT
FLAT
WASHER
PIPE CLAMP
(NOT SUPPLIED
MOUNTING
A
DAPTER
T SLOT
POWER REQUIREMENTS
Each DB-612 requires both lines of a SINGLE PHASE 120/240 VOLT AC service at 30 Amps per line or THREE
PHASE 120/208 VOLT AC service at 20 Amps per line. A neutral conductor is needed. The unit requires a line
frequency of 60HZ. Power enters the DB-612 through the knockout sized holes in the left end of the unit. A
terminal block for connecting the incoming power is located inside the left end of the unit. There is also an earth
ground lug.
The DB-612 will not operate correctly using only 2 phases of a 3 phase power service. This holds true
regardless of whether the unit is set up for single or three phase power.
INSTALLATION
MAKE SURE THE INPUT POWER IS DISCONNECTED BEFORE INSTALLING THE DB-612.
The DB-612 is supplied to operate on THREE PHASE 120/208 VAC power. It can be "field converted' to operate
on SINGLE PHASE 120/240 VAC. See the section "SINGLE PHASE POWER CONNECTIONS" for information
about converting to Single phase power. The power input terminals are rated for 3 AWG#10 wires, 4 AWG#12
wires or 5 AWG#14 wires. Terminal torque is 16 lb-in max.