Time Delay Relays
Multifunction
DSQU / DSTU SERIES
Description
The DSQU and DSTU Series of 17 mm, switch adjustable,
.5
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
Choose from 24 to 240VAC or 9 to 110VDC models
Allows for high rail density
Repeat Accuracy + / -1%
Reduce stocking requirements
Field adjustable delay ranging from 0.1s - 100m
Provides 100 million operations in typical conditions.
Each unit ships with both surface and DIN rail quick
mount adapters
Self monitoring and self correcting for
improved performance
Wiring & Adjustment Diagrams
DELAY-ON-MAKE & RECYCLING
L1
N/L2
Universal AC or
DC voltage
Compact 17.5mm size
Microcontroller based
Multifunction:
5 timing functions
Knob Adjustable
Time Delay
0.7A steady, 10A inrush
solid-state output
Mounting fasteners
included
Watchdog circuitry
ADJUSTMENTS
DOM A
B
A
SS B
R
A
B
L1
N/L2
DOB A
B
DOM = Delay-on-Make
SS = Single Shot/Interval
R = Recycling
DOB = Delay-on-Break
SINGLE SHOT, INTERVAL &
DELAY-ON-BREAK
L1
N/L2
L1
N/L2
Accessories
I
0.1s
1s
10s
1m
R
0.1-6.3s
1-63s
10-630s
1-63m
M
X0.1s C
D
X1s
C
D
S
E
F
E
F
E
F
E
F
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.
X10s C
D
X1m C
D
V = Voltage
L = Load
J= Wire Required for
Interval Operation
S1= Initiate Switch
UTL = Optional Untimed Load
R = Range
M = Multiplier
S = Setting
I = Increments of time
ON
1
2
4
8
16
32
Ordering Information
MODEL
INPUT VOLTAGE
CONNECTION
DSQUA3
DSQUD3
DSTUA3
DSTUD3
24 - 240VAC
9 - 110VDC
Quick Connects
Quick Connects
Terminal Blocks
Terminal Blocks
Add switches in ON position
TD = 2+8+16=26
24
-
240VAC
9
-
110VDC
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/dsqu-dstu
Rev: 1-A-062216
Time Delay Relays
Multifunction
DSQU / DSTU SERIES
Specifications
Time Delay
Type
Adjustment
Range*
Microcontroller based with ceramic resonator
and watchdog circuitry
6 switches adjust the time delay;
DIN Rail Mount
2 switches select 1 of 4 multipliers
x0.1s = 0.1 - 6.3s in 0.1s increments
x1s = 1 - 63s in 1s increments
35mm DIN 3
x10s = 10 - 630s in 10s increments
x1m = 1 - 63m in 1m increments
32MM DIN 1
±0.1% or ±20ms, whichever is greater
±2% or ±50ms, whichever is greater
≤ 300ms
Single Shot & Delay-on-Break: ≤ 32ms
±2% or ±50ms, whichever is greater
.815
(20.70)
Mounting Diagrams
P0500-178
SURFACE MOUNT
Inches (Millimeters)
.38
(9.65
P0500-179
DIN RAIL MOUNT
Inches (Millimeters)
.185
(4.70)
Surface Mount
.235 DIA
(5.97)
2.41
Quick Mount (61.2)
Fastner(2)
[Drill . 187 (4.75)
diameter hole]
DIN Rail Mount
.38
(9.65
Surface Mo
.235 DI
(5.97)
35mm DIN 3
3.00
(76.2)
Repeat Accuracy
Setting Accuracy
Reset Time
Initiate Time
Time Delay vs Temp.
& Voltage
Input
Voltage
3.00
(76.2)
32MM DIN 1
Quick Mount
Fastner(2)
[Drill . 187 (4.
diameter hole
.640
(16.26)
.69
(17.52)
.815
(20.70)
.640
(16.26)
AC: 24 to 240VAC; -20% - 10%
DC: 9 to 110VDC; -0% - 20% @ -25°C
9.4 to 110VDC; -0% - 20% @ -40°C
AC Line Frequency/DC Ripple
50/60Hz / ≤ 10%
Output
Type
Solid state
Form
NO
Rating
0.7A steady state, 10A inrush
Voltage Drop
AC
≅
2.5V @ 0.7A; DC
≅
1.5V @ 0.7A
Protection
Surge
IEEE C62.41-1991 Level A
Circuitry
Encapsulated
Dielectric Breakdown
≥ 2000V RMS terminals to mounting surface
Polarity
DC units are reverse polarity protected
Mechanical
Mounting
Two base adaptors are available
DIN Rail
Snap on to 32 mm DIN 1 & 35 mm DIN 3 rail
Surface
Two #6 (M3.5 x 0.6) screws or quick
mount fasteners
Dimensions
H
76.2 mm (3.0”);
W
17.52 mm (0.69”);
D
61.2 mm (2.41”)
Termination
DSQU
0.25 in. (6.35 mm) male quick connect
terminals
DSTU
0.197 in. (5 mm) push-on terminal blocks for up
to #14 AWG (2.5 mm
2
) wire
Environmental
Operating/Storage
Temperature
-40° to 60°C / -40° to 85°C
Humidity
95% relative, non-condensing
Weight
≅
4.2 oz (119 g)
*For CE approved applications, power must be removed from the unit when a switch position
is changed.
Inches (Millimeters)
Inches (Millimeters)
© 2016 Littelfuse Protection Relays & Controls
www.littelfuse.com/dsqu-dstu
Rev: 1-A-062216
