Time Delay Relays
Dedicated - Delay-on-Make
TDM / TDMH / TDML SERIES
Delay-on-Make Timer
*8-pin models UL listed when used in
combination with P1011-6 socket only.
*
Description
The TDM/TDMH/TDML Series is a delay-on-make timer that
combines accurate digital circuitry with isolated, DPDT relay
contacts in an industry standard 8-pin plug-in package. DIP
switch adjustment allows precise selection of the time delay over
the full time delay range. The TDM/TDMH/TDML Series is the
product of choice for custom control panel and OEM designers.
Operation (Delay-on-Make)
Upon application of input voltage, the time delay begins. The
output is de-energized before and during the time delay. At the
end of the time delay, the output relay energizes and remains
energized until input voltage is removed.
Reset:
Removing input voltage resets the time delay and output.
8-PIN
Wiring Diagram
Features & Benefits
FEATURES
Wide delay range
(0.1s to 2.8h)
Microcontroller based
BENEFITS
User selectable via DIP switches for fine tuning to
individual applications.
Repeat Accuracy + / - 0.1%
Provides first time setting accuracy of +/-2%
Provides flexibility for use in most applications
Provides visual indication of time delay status
Allows control of loads for AC or DC voltages
Dip switch adjustment
Setting accuracy +/-2%
Relay contacts are isolated.
L1
N/L2
LED indication
Isolated 10A, DPDT
output contacts
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.
Ordering Information
MODEL
INPUT VOLTAGE
DELAY RANGE
TDM120AL
TDM12DL
TDM230AL
TDM24AL
TDM24DL
TDMH120AL
TDMH24AL
TDML110DL
TDML120AL
TDML12DL
TDML24DL
120VAC
12VDC
230VAC
24VAC
24VDC/28VDC
120VAC
24VAC
110VDC
120VAC
12VDC
24VDC/28VDC
1 - 1023s in 1s increments
1 - 1023s in 1s increments
1 - 1023s in 1s increments
1 - 1023s in 1s increments
1 - 1023s in 1s increments
10 - 10230s in 10s increments
10 - 10230s in 10s increments
0.1 - 102.3s in 0.1s increments
0.1 - 102.3s in 0.1s increments
0.1 - 102.3s in 0.1s increments
0.1 - 102.3s in 0.1s increments
NDS-8 Octal 8-pin Socket
8-pin 35mm DIN rail or surface mount. Surface
mounted with two #6 screws or snaps onto a
35 mm DIN rail. Uses PSC8 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 sets of two.
P1011-6 Octal Socket for UL listing*
8-pin surface mount socket with binder head
screw terminals. Rated 10A @ 600VAC.
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
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/tdm-tdmh-tdml
Rev: 1-A-062116
Time Delay Relays
Dedicated - Delay-on-Make
TDM / TDMH / TDML SERIES
Specifications
Time Delay
Type
Range*
Repeat Accuracy
Setting Accuracy
Reset Time
Recycle Time
Time Delay vs. Temperature
& Voltage
Indicator
Input
Voltage
Tolerance
12VDC & 24VDC/AC
110VAC/DC to 230VAC
AC Line Frequency
Power Consumption
Output
Type
Form
Rating
Life
Protection
Polarity
Isolation Voltage
Mechanical
Mounting
Dimensions
Termination
Environmental
Operating/Storage
Temperature
Weight
Digital integrated circuitry
0.1 - 102.3s in 0.1s increments
1 - 1023s in 1s increments
10 - 10,230s in 10s increments
±0.1% or 20ms, whichever is greater
±2% or 50ms, whichever is greater
≤ 50ms
During Timing - TDMH: ≤ 500ms
TDM, TDML: ≤ 300ms
±2%
LED glows during timing; relay is
de-energized
12, 24, or 110 VDC; 24, 120, or 230VAC
-15% - 20%
-20% - 10%
50/60 Hz
≤ 2.25W
Electromechanical relay
DPDT
10A resistive @ 120/240VAC & 28VDC;
1/3 hp @ 120/240VAC
Mechanical - 1 x10
7
; Electrical - 1 x 10
6
DC units are reverse polarity protected
≥ 1500V RMS input to output
Plug-in socket
H
81.3 mm (3.2”);
W
60.7 mm (2.39”);
D
45.2 mm (1.78“)
Octal 8-pin plug-in
Binary Switch Operation
Function Diagram
DELAY-ON-MAKE (ON-DELAY)
V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time
-20° to 65°C / -30° to 85°C
≅
6 oz (170 g)
*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/tdm-tdmh-tdml
Rev: 1-A-062116
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