Time Delay Relays
Dedicated - Delay-on-Break
TSDB SERIES
Description
TheTSDB 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.
TheTSDB 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.
Wiring Diagram
(Positive Switching)
L1
N/L2
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 =Timed Load
S1 = Initiate Switch
Features & Benefits
FEATURES
BENEFITS
Repeat accuracy + / - 0.5%,
Factory calibration + / - 1%
Microcontroller based
R
is used when
T
external adjustment
is ordered.
Compact design
Allows flexiblility for OEM applications
1A Steady, 10A inrush
solid-state output
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
Totally solid state
and encapsulated
Wide temperature
range: -40° to 75°C
Reliable in demanding commercial and
industrial applications
Accessories
P1004-13, P1004-13-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay adjustment.
Ordering Information
INPUT
SWITCHING
MODEL
ADJUSTMENT
TIME DELAY
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
VOLTAGE
MODE
Positive
n/a
24VDC
TSDB320P
TSDB421
TSDB431
External
External
Onboard
0.1 - 10s
1 - 100s
1 - 100s
120VAC
120VAC
P0700-7 Versa-Knob
Designed for 0.25 in (6.35 mm) shaft of
Versa-Pot. Semi-gloss industrial black finish.
n/a
If you don’t find the part you need, call us for a custom product 800-843-8848
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.
© 2016 Littelfuse Protection Relays & Controls
www.littelfuse.com/tsdb
Rev: 1-A-062216