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Lightolier LTC Merkblatt

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631 Airport Road, Fall River, MA 02720 • (508) 679-8131 • Fax (508) 674-4710
We reserve the right to change details of design, materials and finish.
www.lightolier.com © 2008 Philips Group • B0308
Job Information 
Type:
Job Name: 
Cat. No.: 
Lamp(s): 
Notes:
 
Low Voltage Transfer Circuit
  LTC
Page 1 of 1 
For Use with Low Voltage Down-Lighting, 2 x 75 Watt Channels
Lightolier is a Philips group brand
General Description
The Low Voltage Transfer Circuit is designed to allow the user to combine their 
existing low voltage lighting with a 12 VDC emergency unit power pack such as 
Lightolier’s C3 Series.  The low voltage lighting may continue to be controlled by 
a wall switch or dimmer control for normal usage.  In the event of utility power 
failure, the Low Voltage Transfer Circuit will allow the 12 volt emergency power 
unit to supply power directly to the lamps of the low voltage lighting fixture.
Features 
1.   Illumination: The Low Voltage Transfer Circuit is a two channel device pro-
viding switching for up to 75 watts per channel.
 2.  Housing: Housing and cover are constructed of 20 gauge galvanized steel. 
Three knockouts for conduit attachment are provided. A grounding lead is 
provided inside the housing.
 3.  Installation: Two #8 sheet metal screws are provided for mounting the Low 
Voltage Transfer Module. Three knockouts are provided for the attachment 
of conduit. A grounding lead is supplied inside the housing. The LTC is listed 
for use in insultated ceilings. (IC rated). 
  
 4.  Electronics (Load): Reverse Polarity protected with low battery voltage 
disconnect (standard in all Lightolier emergency battery units.)
 5.  Electronics (Special Requirement): Determine the maximum wattage 
draw of the down-light fixture and be certain that the 12 VDC emergency 
supply unit equipment is capable of sustaining that load for a minimum of 90 
minutes as required by code.
 6.   Input Power Requirements: 120 VAC - .72W
 7.  Output Power Requirements: 120 VDC - 2 channel at 75W max each
Warranty
Electronics:  3 years full
Code Compliance
Listed for Insulated Ceiling Systems (IC rated), Damp location listing standard 
- 32°F (0°C) to 122°F (50°C), ETL listed to UL 924 standards
Complete Fixture consists of base unit.
How to Specify:
Model 
Series
LTC = Low Voltage 
Transfer Circuit
LTC
2.725”
(6.921cm)
5.500”
(13.97cm)
1.290”
(3.277cm)
Low Voltage
Transfer Module
Emergency
Unit
Lighting
Fixture
Equipment
Xfmr 1
Lamp 1
dotted lines
indicate original
wiring path
observe
proper
polarity
Xfmr 1
Lamp 1
Low Voltage
Transfer Module
Lighting
Fixture
Xfmr 2
Lamp 2
Xfmr 1
Lamp 1
dotted lines
indicate original
wiring path
observe
proper
polarity
Xfmr 2
Xfmr 1
Lamp 1
Lamp 2
TWO LAMP INSTALLATION
12 VDC
Emergency
Unit
Equipment
12 VDC
12V 75W MAX.
12V 75W MAX.
12V 75W MAX.
SINGLE LAMP INSTALLATION
Low Voltage
Transfer Module
12 VDC
Emergency
Unit
Equipment
Xfmr 1
Lamp 1
Lighting
Fixture
Xfmr 1
12V 75W MAX
indicates 
original
wiring path
Lamp 1
L2
L+
L-
EMERGENCY
POWER INPUT
Low Voltage
Transfer Module
Emergency
Unit
Lighting
Fixture
Equipment
Xfmr 1
Lamp 1
dotted lines
indicate original
wiring path
observe
proper
polarity
Xfmr 1
Lamp 1
Low Voltage
Transfer Module
Lighting
Fixture
Xfmr 2
Lamp 2
Xfmr 1
Lamp 1
dotted lines
indicate original
wiring path
observe
proper
polarity
Xfmr 2
Xfmr 1
Lamp 1
Lamp 2
TWO LAMP INSTALLATION
12 VDC
Emergency
Unit
Equipment
12 VDC
12V 75W MAX.
12V 75W MAX.
12V 75W MAX.
SINGLE LAMP INSTALLATION
Two Lamp Installation
observe
proper
polarity
One Lamp Installation
AC2
AC2
AC1
AC1
XFMR 2
XFMR 1
LAMP CONN
L1
L1
L2
L2
Xfmr 1
Xfmr 2
Low Voltage
Transfer Module
EMERGENCY
POWER INPUT
observe
proper
polarity
12 VDC
Emergency
Unit
Equipment
Lamp 1
L2
AC2
AC2
AC1
AC1
XFMR 2
XFMR 1
LAMP CONN
L1
L1
L2
L2
Lamp 2
Lighting
Fixture
Xfmr 1
indicates 
original
wiring path
Lamp 1
Lamp 2
Xfmr 2
12V 75W MAX
12V 75W MAX
12V 75W MAX