ASQU ASTU Series - Multifunction Time Delay Relay

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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 ASQU and ASTU Series of 17.5 mm, knob adjustable, universal solid-state timers offer multiple functions, voltages, and time delay ranges. Choose one of 5 functions and 4 time delay ranges via 4 selection switches located on face of the unit. Adjustment through the time range is accomplished by an onboard knob.


The ASQU Series has quick connect terminal and the ASTU Series has terminal blocks.

Access specifications, certifications, check availability and order parts below

Catalog #Input
Voltage (V)
Output
Form
Storage Temperature (F/C)Time Delay RangeStockSamplesCompare
ASQUA324 or 240 V acNO-40° to 85°C (-40° to 185°F)0.1 - 10 s; 1 - 100 s; 10 - 1000 s; 1 - 100 mCheckOrder
ASQUD39 or 110 V dc; 9.4 or 110 V dc; 120 or 230 V acNO-40° to 85°C (-40° to 185°F)0.1 - 10 s; 1 - 100 s; 10 - 1000 s; 1 - 100 mCheckOrder
ASTUD39 or 110 V dc; 9.4 or 110 V dc; 120 or 230 V acNO-40° to 85°C (-40° to 185°F)0.1 - 10 s; 1 - 100 s; 10 - 1000 s; 1 - 100 mCheckOrder
ASTUA324 or 240 V acNO-40° to 85°C (-40° to 185°F)0.1 - 10 s; 1 - 100 s; 10 - 1000 s; 1 - 100 mCheckOrder
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