Name: TRS Series - Single Shot Timer
Brand: Littelfuse Inc.

TRS Series - Single Shot Timer

Series: TRS

Questions? Contact Littelfuse Support

Disclaimer Notice

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 TRS Series combines an isolated, 10A electromechanical, relay output with analog timing circuitry. False trigger of the TRS by a transient is unlikely because of the complete isolation of the circuit from the line prior to initiation. The initiate contact is common to one side of the line and may be utilized to operate other loads. Installation is easy due to the TRS’s industry standard 8 or 11-pin plug-in base wiring.

Operation (Single Shot)
Input voltage must be applied to the input 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. Applying input voltage with the initiate switch closed will energize the load and begin the time delay.
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.

Access specifications, certifications, check availability and order parts below

Catalog #	Input Voltage (V)	Output Form	Storage Temperature (F/C)	Time Delay Range	Dimensions	Stock	Samples

TRS120A2X30	120VAC	Isolated SPDT	-40° to 85°C (-40°F to 185°F)	1 - 30s knob adjustable	3.62 x 2.39 x 1.78 in. (91.9 x 60.7 x 45.2mm)
TRS120A2X300	120 V ac	Isolated SPDT	-40° to 85°C (-40° to 185°F)	7 - 300 s knob adjustable	3.6 H x 2.39 W in. (91.6 x 60.7 mm)	Check	Order
TRS120A2Y10	120 V ac	Isolated SPDT	-40° to 85°C (-40° to 185°F)	0.1 - 10 s knob adjustable	3.6 H x 2.39 W in. (91.6 x 60.7 mm)	Check	Order
TRS120A2Y30	120VAC	Isolated SPDT	-40° to 85°C (-40°F to 185°F)	1 - 30s knob adjustable	3.62 x 2.39 x 1.78 in. (91.9 x 60.7 x 45.2mm)
TRS24D7Z10	24 or 28 V dc	Isolated SPDT	-40° to 85°C (-40° to 185°F)	0.1 - 10 s externally adjustable	3.6 H x 2.39 W in. (91.6 x 60.7 mm)	Check	Order