Time Delay Relays
DELAY-ON-BREAK
*
TDB / TDBH / TDBL Series
Description
The TDB series combines accurate digital circuitry with
isolated, 8 A, DPDT or SPDT contacts in an 8-pin or 11-pin
plug-in package. The TDB series features DIP switch
selectable time delays ranging from 0.1–10,230 seconds in
three ranges. The TDB series is the product of choice for
custom control panel and OEM designers.
Operation (Delay-on-Break)
Input voltage must be applied to the input before and during
timing. Upon closure of the initiate switch, the output relay
is energized. The time delay begins when the initiate switch
is opened (trailing edge triggered). 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
Reset: Reclosing the initiate switch during timing resets the
time delay. Loss of input voltage resets the time delay and
output.
8-PIN OCTAL SPDT
Features & Benefits
L1
N/L2
S1 = Initiate Switch
Relay contacts are isolated
FEATURES
BENEFITS
3 time ranges available
(0.1 s to 2.8 h)
Makes it versatile for use in many
applications
Repeat Accuracy +/- 0.1 %;
Setting Accuracy +/- 2 %
Microcontroller based
11-PIN DPDT
LED indication
(select models)
Provides visual indication of relay status
Dip switch adjustment
Provides first time setting accuracy
Allows control of loads with independent
voltage sources
L1
N/L2
Isolated output contacts
Ordering Information
MODEL
INPUT VOLTAGE
DELAY RANGE (SEC)
LED TYPE PLUG/OUTPUT FORM
TDB120AL
TDB120ALD
TDB12D
120 V ac
120 V ac
12 V dc
230 V ac
24 V ac
1–1023 in 1 s increments
1–1023 in 1 s increments
1–1023 in 1 s increments
1–1023 in 1 s increments
1–1023 in 1 s increments
X
X
Octal (8-pin) plug, SPDT
11-pin plug, DPDT
Octal (8-pin) plug, SPDT
Octal (8-pin) plug, SPDT
Octal (8-pin) plug, SPDT
Octal (8-pin) plug, SPDT
Octal (8-pin) plug, SPDT
11-pin plug, DPDT
TDB230AL
TDB24AL
X
X
X
X
X
X
X
X
TDB24DL
24 V dc/ 28 V dc 1–1023 in 1s increments
TDBH120AL
TDBH120ALD
TDBL120AL
TDBL120ALD
TDBL24DL
120 V ac
120 V ac
120 V ac
120 V ac
10–10230 in 10 s increments
10–10230 in 10 s increments
0.1–102.3 in 0.1 s increments
0.1–102.3 in 0.1 s increments
Octal (8-pin) plug, SPDT
11-pin plug, DPDT
24 V dc/ 28 V dc 0.1–102.3 in 0.1 s increments
Octal (8-pin) plug, SPDT
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