tdb / tdbh / tdbl series
Time Delay Relays
Delay-on-Break
TDB / TDBH / TDBL SERIES
Relay Output, Delay-on-Break
Time Delay Relay
*
*8-pin models UL listed when used in
combination with P1011-6 socket only.
Description
8-PIN
Wiring Diagram
11-PIN
8-PIN OCTAL SPDT
The TDB Series combines accurate digital circuitry with isolated,
10A, 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.
Reset: Reclosing the initiate switch during timing resets the time
delay. Loss of input voltage resets the time delay and output.
Features & Benefits
L1
N/L2
S1 = Initiate Switch
Relay contacts are isolated
FEATURES
BENEFITS
3 time ranges available
(0.1s to 2.8h)
Makes it versatile for use in many applications
Microcontroller based
Repeat Accuracy + / - 0.1% or 20ms, whichever is
greater; Setting Accuracy + / - 2% or 50ms,
whichever is greater
LED indication
(select models)
Provides visual indication of relay status
DIP switch adjustment
Provides first time setting accuracy
Isolated output contacts
Allows control of loads for AC or DC voltages
11-PIN DPDT
L1
N/L2
Ordering Information
MODEL
INPUT VOLTAGE
DELAY RANGE (SEC)
LED
TYPE PLUG/OUTPUT FORM
TDB120AL
120VAC
1-1023 in 1s increments
X
Octal (8-pin) plug, SPDT
TDB120ALD
120VAC
1-1023 in 1s increments
X
11-pin plug, DPDT
TDB12D
12VDC
1-1023 in 1s increments
TDB230AL
230VAC
1-1023 in 1s increments
X
Octal (8-pin) plug, SPDT
TDB24AL
24VAC
1-1023 in 1s increments
X
Octal (8-pin) plug, SPDT
TDB24DL
24VDC/ 28VDC
1-1023 in 1s increments
X
Octal (8-pin) plug, SPDT
TDBH120AL
120VAC
10-10230 in 10s increments
X
Octal (8-pin) plug, SPDT
TDBH120ALD
120VAC
10-10230 in 10s increments
X
11-pin plug, DPDT
TDBL120AL
120VAC
0.1-102.3 in 0.1s increments
X
Octal (8-pin) plug, SPDT
TDBL120ALD
120VAC
0.1-102.3 in 0.1s increments
X
11-pin plug, DPDT
TDBL24DL
24VDC/ 28VDC
0.1-102.3 in 0.1s increments
X
Octal (8-pin) plug, SPDT
Octal (8-pin) plug, SPDT
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/tdb-tdbh-tdbl
Rev: 1-A-062116
Time Delay Relays
Delay-on-Break
TDB / TDBH / TDBL SERIES
Accessories
BZ1 Front Panel Mount Kit
Provides an easy method of through-the-panel
mounting of 8- or 11-pin plug-in timers, flashers,
and other controls.
NDS-8 Octal 8-pin Socket
8-pin 35mm DIN rail or surface mount. Rated
at 10A @ 300VAC. Surface mounted with two
#6 (M 3.5 x 0.6) screws or snaps onto a 35 mm
DIN rail. Uses PSC8 hold-down clips.
NDS-11 11-pin Socket
11-pin 35mm DIN rail or surface mount. Rated
at 10A @ 300VAC. Surface mounted with two
#6 (M 3.5 x 0.6) screws or snaps onto a 35 mm
DIN rail. Uses PSC11 hold-down clips.
PSC8 or PSC11 Hold-down Clips
Securely mounts plug-in controls in any position.
Provides protection against vibration. Use PSC8
with NDS-8 Octal Socket or PSC11 with NDS-11
Socket. Sold in pairs.
PSCRB8 Hold-down Brackets
Designed for use with P1011-6 socket. Securely
mounts 8-pin plug-in controls in any position,
and provides protection against vibration. Sold
in pairs.
P1011-6 Octal Socket for UL listing
8-pin surface mount socket with binder head
screw terminals. Rated 10A @ 600VAC.
Combination is UL Listed when used with
TDB Series timers. Use PSCRB8
Hold-down brackets.
Digi-Set Binary Switch Operation
Specifications
Time Delay
Type
Digital integrated circuitry
Range**
0.1 - 102.3s in 0.1s increments
1 - 1023s in 1s increments
10 - 10,230s in 10s increments
Repeat Accuracy
±0.1% or 20ms, whichever is greater
Setting Accuracy
±2% or 50ms, whichever is greater
Reset Time
≤ 50ms
Recycle Time
≤ 150ms
Time Delay vs Temp.
& Voltage
±5%
Indicator
LED indicates relay is energized
Initiate Time
≤ 60ms
Input
Voltage
12, 24/28, or 110VDC; 24, 120, or 230VAC
Tolerance
12VDC & 24VDC/AC
-15% - 20%
110 to 230VAC/DC
-20% - 10%
AC Line Frequency
50/60 Hz
Power Consumption
≤ 3.25W
Output
Type
Electromechanical relay
Form
SPDT or DPDT
Rating
10A resistive @ 120/240VAC & 28VDC;
1/3 hp @ 120/240VAC
Life
Mechanical - 1 x 107; Electrical - 1 x 10 6
Protection
Isolation Voltage
≥ 1500V RMS input to output
Polarity
DC units reverse polarity protected
Mechanical
Mounting
Plug-in socket
DimensionsH 81.3 mm (3.2”); W 60.7 mm (2.4”);
D 45.2 mm (1.8”)
Termination
Octal 8-pin plug-in or 11-pin plug-in
Environmental
Operating/Storage
Temperature
-20° to 65°C / -30° to 85°C
Weight
≅ 6 oz (170 g)
Function Diagram
DELAY-ON-BREAK (OFF-DELAY)
** For CE approved applications, power must be removed from the unit when a switch position
is changed.
© 2016 Littelfuse Protection Relays & Controls
www.littelfuse.com/tdb-tdbh-tdbl
V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
t = Incomplete
Time Delay
R = Reset
= Undefined
Time
Rev: 1-A-062116
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