TDIL120AL - TDIL Series

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Littlefuse Interval Relays
The TDI Series is an interval timer that combines accurate digital circuitry with isolated, 10A rated, DPDT relay contacts in an 8-pin plug-in package. The TDI Series features DIP switch selectable time delays ranging from 0.1 to 10,230 seconds in three ranges. The TDI Series is the product of choice for custom control panel and OEM designers.


Operation (Interval)
Upon application of input voltage, the time delay begins. The output relay is energized during the time delay. At the end of the time delay, the output de-energizes and remains de-energized until input voltage is removed.
Reset: Removing input voltage resets the time delay and the output.

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 @ 120/240VAC
Time Delay Type Digital integrated circuitry
Time Delay Range 0.1 - 102.3s in 0.1s increments
Recycle Time (ms) ≤150ms
Reset Time (ms) ≤50ms
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 LED glows during timing; relay is energized
Isolation Voltage (V) ≥1500V RMS input to output
Life Mechanical - 1 x 107; Electrical - 1 x 106
Power Consumption ≤3.25W
Termination Type Octal 8-pin plug-in
Mounting Method Plug-in socket
Operating Temperature -20° to 65°C (-4°F to 149°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