TDMB422 - TDMB Series

Series: TDMB
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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.

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Product Literature

For Technical Questions

Call +1 800-832-3873 or email us at relays@littelfuse.com 

Property (Mouseover for details) Value
Input Voltage (V) 120 V ac
Input Tolerance (%) -20% - 10%
Input AC Line Frequency (Hz) 50/60
Output Type Electromechanical relay
Output Form SPDT
Output Load Rating (VA) 10 A resistive @ 120/240 V ac and 28 V dc; 1/3 hp @ 230 V ac
Time Delay Type Microcontroller
Time Delay Range DOM: 1 - 1023 s in 1 s increments; DOB: 1 - 1023 s in 1 s increments
Recycle Time (ms) ≤150
Repeat Accuracy (%) ±0.1% or 20 ms whichever is greater
Setting Accuracy ≤±2% or 50 ms whichever is greater
Setpoint vs Ambient Temperature and Operating Voltage (%) ≤±2%
Indication Control LED indicator is on (green) when the initiate switch is closed; Relay LED indicator is on (red) when output relay energized
Undervoltage Trip Voltage 023 s in 1 s increments; DOB: 1 - 1
Insulation Resistance ≥100
Life Electrical: 1 x 10⁶; Mechanical: 1 x 10⁷
Power Consumption ≤2 VA
Termination Type Octal 8-pin plug-in or magnal 11-pin plug-in
Mounting Method Plug-in socket
Operating Temperature -20° to 60°C (-4° to 140°F)
Storage Temperature (F/C) -30° to 85°C (-22° to 185°F)
Dimensions 3.2 H x 2.4 W in. (81.3 x 60.7 mm)
Weight (lbs/g) 0 Kg
Dimensions 3.2 H x 2.4 W in. (81.3 x 60.7 mm)

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