Time Delay Relays
Delay-on-Make
TDU / TDUH / TDUL SERIES
Encapsulated Solid-State,
Delay-on-MakeTimers
Description
TheTDU Series are encapsulated solid-state, delay-on-make
timers that combine digital timing circuitry with universal voltage
operation. TheTDU offers DIP switch adjustment allowing
accurate selection of the time delay over the full time delay
range. This series is an excellent choice for process control
systems and OEM equipment.
Operation (Delay-on-Make)
Upon application of input voltage, the time delay begins. The
output is de-energized before and during the time delay. At
the end of the time delay, the output energizes and remains
energized until input voltage is removed.
Reset: Removing input voltage resets the time delay and output.
Features & Benefits
Wiring Diagram
FEATURES
BENEFITS
Universal input voltage
Meets wide application needs
Repeat Accuracy +/- 0.5% or 20ms, whichever
is greater
L1
N/L2
Microcontroller based
No moving parts to arc and wear out over time, and
encapsulated to protect against shock, vibration,
and humidity
Totally solid state
and encapsulated
3 time ranges available
(0.1s to 2.8h)
Makes it versatile for use in many applications
Provides first time setting accuracy
Load may be connected to
terminal 3 or 1.
DIP switch adjustment
Accessories
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P1015-64 (AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
Ordering Information
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
MODEL
INPUT VOLTAGE
TIME RANGE (SEC)
TDUL3000A
TDUL3001A
TDU3000A
TDU3001A
TDU3003A
TDUH3000A
TDUH3001A
24 to 120VAC/DC
100 to 240VAC/DC
24 to 120VAC/DC
100 to 240VAC/DC
120 to 277VC/DC
24 to 120VAC/DC
100 to 240VAC/DC
0.1-102.3
0.1-102.3
1-1023
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
1-1023
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm
DIN type rail with two #10 screws (DIN rail not
included).
1-1023
10-10230
10-10230
If you don’t find the part you need, call us for a custom product 800-843-8848
© 2016 Littelfuse Protection Relays & Controls
www.littelfuse.com/tdu-tduh-tdul
Rev: 1-A-062116