Cut Sheet

Available case types
A-case
B-case
C-case
Key standards
California Energy Commission (CEC) Listed
UL Listed (evaluated to the requirements of UL 935)
CSA certified (evaluated to the requirements of
C22.2 No. 74)—all models except T8 25 W
1-lamp ballasts for T4 CFL meet FCC Part 18
requirements for residential use
Meets FCC Part 18 Non-Consumer requirements
for EMI/RFI emissions
Shown above: Tu-Wire ballast, B-case
Model numbers are organized by lamp type, refer to pg. 41 for additional information.
Operating voltage
120 V @ 60 Hz
Lamp types and wattages
T8 linear and U-bent: 25 W, 32 W
T4 4-pin quad-tube CFL: 18 W, 26 W
T4 4-pin triple-tube CFL: 18 W, 26 W, 32 W
Control option
Tu-Wire control
Tu-Wire ballasts offer high performance 100% to 5% dimming for linear and compact fluorescent
lamps. Retrofit applications can benefit from the ease of installation offered by Lutron
® Tu-Wire
dimming ballasts. Tu-Wire ballasts require only two wires (dimmed hot and neutral) for power and
control. Lutron offers a wide range of compatible Tu-Wire controls, making Tu-Wire ballasts a perfect
choice for many applications. Additionally, one-lamp T4 models have been designed to meet FCC Part
18 consumer requirements for residential applications.
High performance dimming to 5%
Tu-Wire controlled
Mounting
Ballast mounts using two mounting tabs or studs
within a fluorescent fixture
Lutron and NEMA® recommend sockets complying
with IEC 60400. Sockets must have a UL mark
as well. Use rapid start sockets, not instant
startsockets.
Terminals accept 16-18 AWG (0.75 to 1.5 mm
2
)
solid copper or tinned stranded wire
Wiring
Tu-Wire ballasts require 2 wires plus Ground
(Dimmed Hot and Neutral); one 16-18 AWG solid
copper Class 1 wire per terminal
Maximum ballast-to-lamp-socket lead length
is 7 ft (2 m) for T8 lamps and 3 ft (1 m) for T4
compactlamps
Ballast is grounded via case
For control wiring diagrams, see pg. 72, and for
lamp wiring diagrams, see pg. 78.
Features
Continuous, flicker-free dimming from 100% to 5%
Works with all Lutron Tu-Wire fluorescent controls
for consistent dimming performance
Sensors cannot connect directly to Tu-Wire ballasts
2-Wire line voltage control ideal for retrofit
Line-voltage miswire protection
Slim-profile design
Low-line voltage protection circuitry prevents
damage to the ballast or lamps if the ballast is
connected to an incompatible dimmer
Lamps turn on at any dimmed level without going
to full brightness
100% performance-tested, including burn-in at
the factory
Specifications
Total Harmonic Distortion (THD) less than 20%
Power factor greater than 0.95
Ballast factor greater than 0.95 for T4 lamps
Ballast factor equal to 1.0 for T8 lamps
Environment
Sound rating: Class A
Minimum lamp starting temperature 10º C (50º F)
Maximum ballast case temperature 75º C (167º F)
For system compatibility information, see pg. 12.
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Tu-Wire® ballasts Tu-Wire ballasts