Name: TDR Series - Relay Output, Recycling Time Delay Relay
Brand: Littelfuse Inc.

TDR Series - Relay Output, Recycling Time Delay Relay

Series: TDR

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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 TDR Series of time-delay relays are comprised of digital circuitry and an isolated, 10A relay output. The on and off delays are selected by means of two, ten position binary switches, which allow the setting of the desired delay to be precise every time.

Operation (Recycling - ON Time First)
Upon application of input voltage, the green LED glows, the output relay is energized, the red LED glows, and the T1 ON time begins. At the end of the ON time, the output deenergizes, the red LED turns OFF and the T2, OFF time begins. At the end of the OFF time, the output relay energizes and the cycle repeats as long as input voltage is applied.
Reset: Removing input voltage resets the output and time delays, and returns the sequence to the first delay.

Operation (Recycling - OFF Time First)
Upon application of input voltage, the green LED glows, the T1 OFF time begins, the load is OFF. At the end of the OFF time, the T2 ON time begins, the load energizes, and the red LED glows. At the end of the ON time the load de-energizes and the red LED turns OFF. The cycle repeats until input voltage is removed.
Reset: Removing input voltage resets the output and the sequence to the OFF time.

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

TDR1A22	12 V dc	DPDT	-30° to 85°C (-22° to 185°F)	ON time first: 1 - 1023 s in 1 s increments; OFF: 1023 s in 1 s increments	3.2 H x 2.4 W in. (81.3 x 60.7 mm)	Check	Order
TDR2A23	24 V ac	DPDT	-30° to 85°C (-22° to 185°F)	ON time first: 1 - 1023 s in 1 s increments; OFF: 10 - 10230 s in 10 s increments	3.2 H x 2.4 W in. (81.3 x 60.7 mm)	Check	Order
TDR4A11	120 V ac	DPDT	-30° to 85°C (-22° to 185°F)	ON time first: 0.1 - 102.3 s in 0.1 s increments; OFF: 0.1 - 102.3 s in 0.1 s increments	3.2 H x 2.4 W in. (81.3 x 60.7 mm)	Check	Order
TDR4A12	120 V ac	DPDT	-30° to 85°C (-22° to 185°F)	ON time first: 0.1 - 102.3 s in 0.1 s increments; OFF: 1 - 1023 s in 1 s increments	3.2 H x 2.4 W in. (81.3 x 60.7 mm)	Check	Order
TDR4A13	120 V ac	DPDT	-30° to 85°C (-22° to 185°F)	ON time first: 0.1 - 102.3 s in 0.1 s increments; OFF: 10 - 10230 s in 10 s increments	3.2 H x 2.4 W in. (81.3 x 60.7 mm)	Check	Order
TDR4A22	120 V ac	DPDT	-30° to 85°C (-22° to 185°F)	ON time first: 1 - 1023 s in 1 s increments; OFF: 1 - 1023 s in 1 s increments	3.2 H x 2.4 W in. (81.3 x 60.7 mm)	Check	Order
TDR4A23	120 V ac	DPDT	-30° to 85°C (-22° to 185°F)	ON time first: 1 - 1023 s in 1 s increments; OFF: 10 - 10230 s in 10 s increments	3.2 H x 2.4 W in. (81.3 x 60.7 mm)	Check	Order
TDR4A33	120 V ac	DPDT	-30° to 85°C (-22° to 185°F)	ON time first: 10 - 10230 s in 10 s increments; OFF: 10 - 10230 s in 10 s increments	3.2 H x 2.4 W in. (81.3 x 60.7 mm)	Check	Order
TDR4B22	120 V ac	DPDT	-30° to 85°C (-22° to 185°F)	ON time first: 1 - 1023 s in 1 s increments; OFF: 1 - 1023 s in 1 s increments	3.2 H x 2.4 W in. (81.3 x 60.7 mm)	Check	Order
TDR4B23	120 V ac	DPDT	-30° to 85°C (-22° to 185°F)	ON time first: 1 - 1023 s in 1 s increments; OFF: 10 - 10230 s in 10 s increments	3.2 H x 2.4 W in. (81.3 x 60.7 mm)	Check	Order
TDR6A22	230 V ac	DPDT	-30° to 85°C (-22° to 185°F)	ON time first: 1 - 1023 s in 1 s increments; OFF: 1 - 1023 s in 1 s increments	3.2 H x 2.4 W in. (81.3 x 60.7 mm)	Check	Order