TDUS3000A - TDUS/TDUSH/TDUSL Series

Littelfuse Single Shot Relays
The TDUS Series combines digital timing circuitry with universal voltage operation. Voltages of 24 to 240VAC and 12 to 24VDC are available in three ranges. The TDUS Series offers DIP switch selectable time delays ranging from 0.1 seconds to 102.3 minutes in three ranges. Its 1A rated output, ability to operate on multiple voltages, and wide range of switch selectable time delays make the TDUS Series an excellent choice for process control systems and OEM equipment.


Operation (Single Shot)
Input voltage must be applied before and during timing. Upon momentary or maintained closure of the initiate switch (leading edge triggered), the output energizes for a measured interval of time. At the end of the delay, the output de-energizes. Opening or reclosing the initiate switch during timing has no affect on the time delay. The output will energize if the initiate switch is closed when input voltage is applied.
Reset: Reset occurs when the time delay is complete and the initiate switch is opened. Loss of input voltage resets the time delay and output.

Property (Mouseover for details) Value
Input Voltage (V) 24 to 120VAC
Input Tolerance (%) ±20%
Input AC Line Frequency (Hz) 50/60Hz
Output Type Solid state
Output Form NO closed during timing
Output Load Rating (VA) 1A steady state 10A inrush at 60°C
Output Voltage Drop (V) ≅2.5V @ 1A
Time Delay Range 1 - 1 023s 1s increments
Reset Time (ms) ≤150ms
Initiate Time (ms) ≤20ms
Repeat Accuracy (%) ±0.5% or 20ms whichever is greater
Setting Accuracy ≤±2% or 20ms whichever is greater
Setpoint vs Ambient Temperature and Operating Voltage (%) ≤ ±5%
Open State Leakage Current (A) ≅5mA @ 230VAC
Insulation Resistance ≥100 MΩ
Dielectric Breakdown ≥2000V RMS terminals to mounting surface
Circuitry Encapsulated
Power Consumption ≤2VA
Termination Type 0.25 in. (6.35mm) male quick connect terminals
Mounting Method Surface mount with one #10 (M5 x 0.8) screw
Operating Temperature -40° to 60°C (-40°F t° 140°F)
Storage Temperature (F/C) -40° to 85°C (-40°F to 185°F)
Humidity 95% relative non-condensing
Dimensions 2.00 x 2.00 x 1.21 in. (50.8 x 50.8 x 30.7mm)
Weight (lbs/g) ≅2.4oz (68g)
Sample capable No