Time Delay Relays
Dedicated - Delay-on-Break
KSDB SERIES
Description
The KSDB 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. This series is designed for popular AC and DC voltages.
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 (Delay-on-Break)
Input voltage must be applied before and during timing. Upon
closure of the initiate switch, the output energizes. The time
delay begins when the initiate switch is opened. The output
remains energized during timing. At the end of the time delay,
the output de-energizes. The output energizes if the initiate
switch is closed when input voltage is applied.
Reset:
Reclosing the initiate switch during timing resets the time
delay. Loss of input voltage resets the time delay and output.
V = Voltage
UTL = Optional Untimed
Load
L = Load
S1 = Initiate Switch
R
T
is used when external
adjustment is ordered.
Wiring Diagram
L1
N/L2
(Positive Switching)
(Negative Switching)
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
MODEL
INPUT
VOLTAGE
ADJUSTMENT
TIME DELAY
SWITCHING
MODE
KSDB1110MP
KSDB1115SP
KSDB1120SP
KSDB113MP
KSDB113SP
KSDB120P
KSDB134P
KSDB2115S
KSDB220
KSDB231
12VDC
12VDC
12VDC
12VDC
12VDC
12VDC
12VDC
24VAC
24VAC
24VAC
Fixed
Fixed
Fixed
Fixed
Fixed
External
Onboard
Fixed
External
Onboard
10m
15s
20s
3m
3s
0.1 - 10s
1 - 100m
15s
0.1 - 10s
1 - 100s
Positive
Positive
Positive
Positive
Positive
Positive
Positive
n/a
n/a
n/a
KSDB314SP
KSDB315SP
KSDB324N
KSDB330N
KSDB4120M
KSDB4160S
KSDB4190M
KSDB431
KSDB61150S
KSDB631
24VDC
24VDC
24VDC
24VDC
120VAC
120VAC
120VAC
120VAC
230VAC
230VAC
Fixed
Fixed
External
Onboard
Fixed
Fixed
Fixed
Onboard
Fixed
Onboard
4s
5s
1 - 100m
0.1 - 10s
20m
60s
90m
1 - 100s
150s
1 - 100s
Positive
Positive
Negative
Negative
n/a
n/a
n/a
n/a
n/a
n/a
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/ksdb
Rev: 1-A-062216
Time Delay Relays
Dedicated - Delay-on-Break
KSDB SERIES
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.
P1015-64
(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.
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
Power Consumption
AC Line Frequency/DC Ripple
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, 24, or 120VDC; 24, 120, or 230VAC
±20%
AC ≤ 2VA; DC ≤ 2W
50/60 Hz / ≤ 10 %
Solid state
NO, closed before & 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
-40° to 60°C / -40° to 80°C
95% relative, non-condensing
≅
2.4 oz (68 g)
Function Diagram
DELAY-ON-BREAK (OFF-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
.
V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
t = Incomplete
Time Delay
R = Reset
= Undefined
Time
© 2016 Littelfuse Protection Relays & Controls
www.littelfuse.com/ksdb
Rev: 1-A-062216
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