© 2016 Littelfuse Protection Relays & Controls
Time Delay Relays
Multifunction
www.littelfuse.com/dsqu-dstu
Rev: 1-A-062216
DSQU / DSTU SERIES
1
2
4
8
16
32
Add switches in ON position
TD = 2+8+16=26
Description
The DSQU and DSTU Series of 17.5 mm, switch adjustable,
universal solid-state timers offer multiple functions, voltages,
and time delay ranges. Choose one of 5 functions and 4 time
delay ranges via 4 selection switches located on face of the unit.
Six switches adjust the time delay through the selected range.
The DSQU Series has quick connect terminals and the DSTU
Series has terminal blocks.
Features & Benefits
FEATURES BENEFITS
Universal AC or
DC voltage
Choose from 24 to 240VAC or 9 to 110VDC models
Compact 17.5mm size Allows for high rail density
Microcontroller based Repeat Accuracy + / -1%
Multifunction:
5 timing functions
Reduce stocking requirements
Knob Adjustable
Time Delay
Field adjustable delay ranging from 0.1s - 100m
0.7A steady, 10A inrush
solid-state output
Provides 100 million operations in typical conditions.
Mounting fasteners
included
Each unit ships with both surface and DIN rail quick
mount adapters
Watchdog circuitry
Self monitoring and self correcting for
improved performance
Accessories
P1015-13 (AWG 10/12), P1015-64 (AWG 14/16),
P1015-14 (AWG 18/22) Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P0500-178 Surface Mount Adapter
P0500-179 DIN Rail Mount Adapter
For use with the ASxx/DSxx Series timers.
L1 N/L2
V = Voltage
L = Load
J= Wire Required for
Interval Operation
S1= Initiate Switch
UTL = Optional Untimed Load
DOM
SS
R
DOB
A
A
A
A
B
B
B
B
0.1s
1s
10s
1m
X10s
X1s
X0.1s
X1m
R M S I
D
C
D
C
D
C
D
C
F
E
F
E
F
E
F
E
0.1-6.3s
1-63s
10-630s
1-63m
R = Range
M = Multiplier
S = Setting
I = Increments of time
DOM = Delay-on-Make
SS = Single Shot/Interval
R = Recycling
DOB = Delay-on-Break
Wiring & Adjustment Diagrams
Ordering Information
MODEL INPUT VOLTAGE CONNECTION
DSQUA3
24 - 240VAC
Quick Connects
DSQUD3
9 - 110VDC
Quick Connects
DSTUA3 24 - 240VAC Terminal Blocks
DSTUD3 9 - 110VDC Terminal Blocks
If you don’t find the part you need, call us for a custom product 800-843-8848
L1 N/L2
DELAY-ON-MAKE & RECYCLING
SINGLE SHOT, INTERVAL &
DELAY-ON-BREAK
ADJUSTMENTS
