Time Delay Relays
Dedicated - Single Shot
KSDS SERIES
Description
The KSDS Series is ideal for applications that require momentary
start interval timing including dispensing, exposure timing,
or pulse shaping. This series is available for both AC and DC
voltages. This series is designed for general purpose commercial
and industrial applications where a small, cost effective, reliable
solid-state timer is required. The factory calibration for fixed
time delays is within 5% of the target time delay. The repeat
accuracy, under stable conditions, is 0.5% of the selected time
delay. Time delays of 0.1 seconds to 1000 minutes are available
in 6 ranges. The output is rated 1A steady and 10A inrush. The
modules are totally solid state and encapsulated to protect the
electronic circuitry.
Operation (Single Shot)
Input voltage must be applied before and during timing. Upon
momentary or maintained closure of the initiate switch (leading
edge triggered), the output energizes for a measured interval of
time. At the end of the delay, the output de-energizes. Opening
or reclosing the initiate switch during timing has no affect on the
time delay. The output will not energize if the initiate switch is
closed when input voltage is applied.
Reset:
Reset occurs when the time delay is complete and the
initiate switch is opened. Loss of input voltage resets the time
delay and output.
Wiring Diagram
(Positive Switching)
(Negative Switching)
L1
N/L2
V = Voltage
UTL = Optional Untimed Load
L = Timed Load
S1 = Initiate Switch
R
T
is used when external
adjustment is ordered.
Features & Benefits
FEATURES
Microcontroller based
1A Steady, 10A inrush
solid-state output
Totally solid state
and encapsulated
Compact, low
cost design
BENEFITS
Repeat Accuracy + / - 0.5%,
Factory calibration +/- 5%
Provides 100 million operations in typical conditions.
No moving parts to arc and wear out over time and
encapsulated to protect against shock, vibration,
and humidity
Allows flexibility for OEM applications
Ordering Information
MODEL
INPUT
VOLTAGE
ADJUSTMENT
TIME DELAY
SWITCHING
MODE
Accessories
P1004-95, P1004-95-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
P1015-13
(AWG 10/12),
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.
KSDS1115SP
KSDS230
KSDS320P
KSDS415M
KSDS420
12VDC
Fixed
Onboard
External
Fixed
External
15s
0.1 - 10s
0.1 - 10s
5m
0.1 - 10s
Positive
n/a
Positive
n/a
n/a
24VAC
24VAC
120VAC
120VAC
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/ksds
Rev: 1-A-062216
Time Delay Relays
Dedicated - Single Shot
KSDS SERIES
Accessories
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.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
Specifications
Time Delay
Range
Repeat Accuracy
Tolerance
(Factory Calibration)
Reset Time
Initiate Time
Time Delay vs Temp.
& Voltage
Input
Voltage
Tolerance
AC Line Frequency/DC Ripple
Power Consumption
Output
Type
Form
Maximum Load Current
OFF State Leakage Current
Voltage Drop
DC Operation
Protection
Circuitry
Dielectric Breakdown
Insulation Resistance
Polarity
Mechanical
Mounting
Dimensions
Termination
Environmental
Operating/Storage
Temperature
Humidity
Weight
0.1s - 1000m in 6 adjustable ranges or fixed
±0.5 % or 20ms, whichever is greater
≤ ±5%
≤ 150ms
≤ 20ms
≤ ±10%
12 or 24VDC; 24, 120, or 230VAC
±20%
50/60 Hz / ≤ 10 %
AC ≤ 2VA; DC ≤ 1W
Solid state
NO, closed during timing
1A steady state, 10A inrush at 60°C
AC
≅
5mA @ 230VAC; DC
≅
1mA
AC
≅
2.5V @ 1A; DC
≅
1V @ 1A
Positive or negative switching
Encapsulated
≥ 2000V RMS terminals to mounting surface
≥ 100 MΩ
DC units are reverse polarity protected
Surface mount with one #10 (M5 x 0.8) screw
H
50.8 mm (2.0”);
W
50.8 mm (2.0”);
D
30.7 mm (1.21”)
0.25 in. (6.35 mm) male quick connect terminals
External Resistance vs. Time Delay
This chart applies to externally adjustable part numbers.
The time delay is adjustable over the time delay range selected by varying
the resistance across the R
T
terminals; as the resistance increases the tie
delay increases.
When selecting an external R
T
, add the tolerances of the timer and the R
T
for the full time range adjustment.
Examples:
1 to 50 S adjustable time delay, select time delay range 1 and
a 50 K ohn R
T
. For 1 to 100 S use a 100 K ohm R
T
.
-40° to 60°C / -40° to 85°C
95% relative, non-condensing
≅
2.4 oz (68 g)
Function Diagram
SINGLE SHOT
(PULSE FORMER)
V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
© 2016 Littelfuse Protection Relays & Controls
www.littelfuse.com/ksds
Rev: 1-A-062216
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