© 2016 Littelfuse Protection Relays & Controls
Time Delay Relays
Dedicated - Dual Function
www.littelfuse.com/tdmb
Rev: 1-A-062316
TDMB SERIES
Delay-on-Make/Delay-on-Break
L1 N/L2
L1 N/L2
8-PIN OCTAL SPDT
11-PIN DPDT
(P/N ends with D)
Wiring Diagram
Description
The TDMB combines both delay-on-make and delay-on-break
functions into one plug-in package. Selection of the time period
is accomplished with dual switches, one for the on delay and
the other for the off delay. SPDT or DPDT output options provide
isolated, 10A switching capability.
Operation (Delay-on-Make/Delay-on-Break)
Input voltage must be applied at all times. The output relay is
de-energized. Upon closure of the initiate switch, the green
LED glows and the delay-on-make time delay (T1) begins. At the
end of T1, the output relay energizes and the red LED glows.
When the initiate switch opens, the green LED turns OFF and
the delay-on-break time delay (T2) begins. At the end of T2, the
output relay de-energizes and the red LED turns OFF.
Reset: Removing input voltage resets time delay and output.
Opening the initiate switch during the delay-on-make delay,
resets T1. Closing the initiate switch during the delay-on-break
delay, resets T2.
Features & Benefits
FEATURES BENEFITS
Digital circuitry
Repeat Accuracy + / - 0.1%,
Setting accuracy + / - 2%
Isolated, 10A, SPDT or
DPDT output contacts
Allows control of loads for AC or DC voltages
User selectable
Delay-on-Make and
Delay-on-Break
time delay
Timing settings are independently adjustable for
added flexibility
Industry standard octal
plug connection
Eliminates need for special connectors
LED Indication
Provides visual indication of initiate, timing, and
relay output status
DIP Switch Adjustment Provides first time setting accuracy
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. Surface
mounted with two #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. Surface
mounted with two #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 sets of two.
Ordering Information
MODEL
INPUT
VOLTAGE
DELAY-ON-
MAKE
DELAY-ON-
BREAK
PLUG TYPE
TDMB411
120VAC
0.1 - 102.3s in
0.1s increments
0.1 - 102.3s in
0.1s increments
Octal (8-pin)
SPDT
TDMB413D 120VAC
0.1 - 102.3s in
0.1s increments
10 - 10230s in
10s increments
11-pin DPDT
TDMB422 120VAC
1 - 1023s in
1s increments
1 - 1023s in
1s increments
Octal (8-pin)
SPDT
TDMB422D 120VAC
1 - 1023s in
1s increments
1 - 1023s in
1s increments
11-pin DPDT
TDMB622 230VAC
1 - 1023s in
1s increments
1 - 1023s in
1s increments
Octal (8-pin)
SPDT
If you don’t find the part you need, call us for a custom product 800-843-8848
V = Voltage
S1 = Initiate Switch or Thermostat
Relay contacts are isolated.
8-PIN
11-PIN
