TDU Series - Encapsulated Solid-State Delay-On-Make Timer

Series: TDU
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TIMERS FOR HVAC SYSTEMS
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The TDU Series are encapsulated solid-state, delay-on-make timers that combine digital timing circuitry with universal voltage operation. The TDU offers DIP switch adjustment allowing accurate selection of the time delay over the full time delay range. This series is an excellent choice for process control systems and OEM equipment.


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

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For Technical Questions

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

Access specifications, certifications, check availability and order parts below

Catalog #Input
Voltage (V)		Output
Form		Storage Temperature (F/C)Time Delay RangeDimensionsStockSamplesCompare
TDU3000A24 or 120 V ac/dcNO - open during timing-40° to 85°C (-40° to 185°F)1 - 1023 s in 1 s increments2 H x 2 W in. (50.8 x 50.8 mm)CheckOrder
TDU3001A100 or 240 V ac/dcNO - open during timing-40° to 85°C (-40° to 185°F)1 - 1023 s in 1 s increments2 H x 2 W in. (50.8 x 50.8 mm)CheckOrder
TDU3003A120 or 277 V acNO - open during timing-40° to 85°C (-40° to 185°F)1 - 1023 s in 1 s increments2 H x 2 W in. (50.8 x 50.8 mm)CheckOrder
TDUH3000A24 or 120 V ac/dcNO - open during timing-40° to 85°C (-40° to 185°F)10 - 10230 s in 10 s increments2 H x 2 W in. (50.8 x 50.8 mm)CheckOrder
TDUH3001A100 or 240 V ac/dcNO - open during timing-40° to 85°C (-40° to 185°F)10 - 10230 s in 10 s increments2 H x 2 W in. (50.8 x 50.8 mm)CheckOrder
TDUL3000A24 or 120 V ac/dcNO - open during timing-40° to 85°C (-40° to 185°F)0.1 - 102.3 s in 0.1 s increments2 H x 2 W in. (50.8 x 50.8 mm)CheckOrder
Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s) IPC-Material Declaration
TDUL3000A SOLID STATE TIMER RoHS No 01/25/2021 PbFree No 01/25/2021 CoC_RoHS9_TDUL3000A Yes
01/25/2021
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