Relay-Output, Delay-on-Break Time Delay Relay Series - Relay-Output, Delay-on-Break Time Delay Relay

External overview image
Roll Over to Zoom
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 TDB Series combines accurate digital circuitry with isolated, 10A, DPDT or SPDT contacts in an 8 or 11-pin plug-in package. The TDB Series features DIP switch selectable time delays ranging from 0.1-10,230 seconds in three ranges. The TDB Series is the product of choice for custom control panel and OEM designers.


Operation (Delay-on-Break)
Input voltage must be applied to the input before and during timing. Upon closure of the initiate switch, the output relay is energized. The time delay begins when the initiate switch is opened (trailing edge triggered). The output remains energized during timing. At the end of the time delay, the output de-energizes. The output will energize if the initiate switch is closed when input voltage is applied.
Reset: Reclosing the initiate switch during timing resets the time delay. 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 RangeDimensionsStockCompare
TDB120AL120 V acSPDT-30° to 85°C (-22° to 185°F)1 - 1023 s in 1 s increments3.2 H x 2.4 W in. (81.3 x 60.7 mm)Check
TDB120ALD120 V acDPDT-30° to 85°C (-22° to 185°F)1 - 1023 s in 1 s increments3.2 H x 2.4 W in. (81.3 x 60.7 mm)Check
TDB12D12 V dcDPDT-30° to 85°C (-22° to 185°F)1 - 1023 s in 1 s increments3.2 H x 2.4 W in. (81.3 x 60.7 mm)Check
TDB230AL230 V acSPDT-30° to 85°C (-22° to 185°F)1 - 1023 s in 1 s increments3.2 H x 2.4 W in. (81.3 x 60.7 mm)Check
TDB24AL24 V acSPDT-30° to 85°C (-22° to 185°F)1 - 1023 s in 1 s increments3.2 H x 2.4 W in. (81.3 x 60.7 mm)Check
TDB24DL24 V dcSPDT-30° to 85°C (-22° to 185°F)1 - 1023 s in 1 s increments3.2 H x 2.4 W in. (81.3 x 60.7 mm)Check
TDBH120AL120 V acSPDT-30° to 85°C (-22° to 185°F)10 - 10230 s in 10 s increments3.2 H x 2.4 W in. (81.3 x 60.7 mm)Check
TDBH120ALD120 V acDPDT-30° to 85°C (-22° to 185°F)10 - 10230 s in 10 s increments3.2 H x 2.4 W in. (81.3 x 60.7 mm)Check
TDBL120AL120 V acSPDT-30° to 85°C (-22° to 185°F)0.1 - 102.3 s in 0.1 s increments3.2 H x 2.4 W in. (81.3 x 60.7 mm)Check
TDBL120ALD120 V acDPDT-30° to 85°C (-22° to 185°F)0.1 - 102.3 s in 0.1 s increments3.2 H x 2.4 W in. (81.3 x 60.7 mm)Check
TDBL24DL24 V dcSPDT-30° to 85°C (-22° to 185°F)0.1 - 102.3 s in 0.1 s increments3.2 H x 2.4 W in. (81.3 x 60.7 mm)Check
To request product environmental information, please complete the Product Environmental Information Request Form.