Time Delay Relays
Dedicated - Delay-on-Break
TSDB SERIES
Description
The TSDB Series is designed for more demanding commercial
and industrial applications where small size, and accurate
performance are required. The factory calibration for fixed
time delays is within 1% of the target time delay. The repeat
accuracy, under stable conditions, is 0.5% of the time delay.
The TSDB Series is rated to operate over an extended
temperature range. Time delays of 0.1 seconds to 1000 minutes
are available. 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 will energize 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.
Wiring Diagram
(Positive 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
Compact design
1A Steady, 10A inrush
solid-state output
Totally solid state
and encapsulated
Wide temperature
range: -40° to 75°C
BENEFITS
Repeat accuracy + / - 0.5%,
Factory calibration + / - 1%
Allows flexiblility for OEM applications
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
Reliable in demanding commercial and
industrial applications
Accessories
Ordering Information
MODEL
INPUT
VOLTAGE
ADJUSTMENT
TIME DELAY
SWITCHING
MODE
P1004-13, P1004-13-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)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
TSDB320P
TSDB421
TSDB431
24VDC
External
External
Onboard
0.1 - 10s
1 - 100s
1 - 100s
Positive
n/a
n/a
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/tsdb
Rev: 1-A-062216
Time Delay Relays
Dedicated - Delay-on-Break
TSDB 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
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
≤ ±1%
≤ 150ms
≤ 20ms
≤ ±2%
12 or 24VDC; 24, 120, or 230VAC
±15%
AC ≤ 2VA; DC ≤ 1W
50/60 Hz / ≤ 10 %
Solid state
NO, closed before & during timing
1A steady state, 10A inrush at 60°C
≅
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 75°F / -40° to 85°F
95% relative, non-condensing
≅
2.4 oz (68 g)
Function Diagram
DELAY-ON-BREAK (OFF-DELAY)
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/tsdb
Rev: 1-A-062216
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