Dedicated Single-Shot Delay-On-Make Timer Series - Dedicated Single-Shot Delay-On-Make Timer

Series: Dedicated Single-Shot Delay-On-Make Timer
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Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

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.

Product Literature

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
TDUS3000A24 or 120 V acNO - closed 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
TDUS3001A100 or 240 V acNO - closed 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
TDUS3002A12 or 24 V dcNO - closed 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
TDUSH3001A100 or 240 V acNO - closed during timing-40° to 85°C (-40° to 185°F)0.1 - 102.3 m in 0.1 m increments2 H x 2 W in. (50.8 x 50.8 mm)CheckOrder
TDUSL3000A24 or 120 V acNO - closed 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
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