TDMB422D - TDMB Series

Series: TDMB
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Littelfuse Delay on Make Delay on Break Relays
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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.

Property (Mouseover for details) Value
Input Voltage (V) 120VAC
Input Tolerance (%) -20% - 10%
Input AC Line Frequency (Hz) 50/60Hz
Output Type Electromechanical relay
Output Form DPDT
Output Load Rating (VA) 10A resistive @ 120/240VAC and 28VDC; 1/3hp @ 230VAC
Time Delay Type Microcontroller circuitry
Time Delay Range DOM: 1 - 1 023s in 1s increments; DOB: 1 - 1 023s in 1s increments
Recycle Time (ms) ≤150ms
Repeat Accuracy (%) ±0.1% or 20ms whichever is greater
Setting Accuracy ≤±2% or 50ms 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
Insulation Resistance ≥100 MΩ
Isolation Voltage (V) ≥1500V RMS input to output
Life Mechanical - 1 x 107; Electrical - 1 x 106
Power Consumption ≤2VA
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°F to 140°F)
Storage Temperature (F/C) -30° to 85°C (-22°F to 185°F)
Dimensions 3.20 x 2.40 x 1.80 in. (81.3 x 60.7 x 45.2mm)
Weight (lbs/g) ≅6.0oz (170g)
Sample Capable No