Name: THD2 Series - Interval Timers
Brand: Littelfuse Inc.

THD2 Series - Interval Timers

Series: THD2

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 THD2 Series combines accurate timing circuitry with high power solid-state switching. It can switch motors, lamps, and heaters directly without a contactor. You can reduce labor, component cost, and increase reliability with these small, easy-to-use THD2 Series timers.

Operation (Interval)
Upon application of input voltage, the time delay begins. The output energizes during the time delay. At the end of the time delay, the output de-energizes and remains de-energized until input voltage is removed.
Reset: Removing input voltage resets the time delay and the 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

THD2C420	120 V ac	NO - closed during timing	-40° to 85°C (-40° to 185°F)	0.1 - 10 s externally adjustable	2 H x 2 W in. (50.8 x 50.8 mm)	Check	Order
THD2C423	120 V ac	NO - closed during timing	-40° to 85°C (-40° to 185°F)	0.1 - 10 m externally adjustable	2 H x 2 W in. (50.8 x 50.8 mm)	Check	Order
THD2C433	120 V ac	NO - closed during timing	-40° to 85°C (-40° to 185°F)	0.1 - 10 m onboard adjustable	2 H x 2 W in. (50.8 x 50.8 mm)	Check	Order
THD2C620	230 V ac	NO - closed during timing	-40° to 85°C (-40° to 185°F)	0.1 - 10 s externally adjustable	2 H x 2 W in. (50.8 x 50.8 mm)	Check	Order
THD2C633	230 V ac	NO - closed during timing	-40° to 85°C (-40° to 185°F)	0.1 - 10 m onboard adjustable	2 H x 2 W in. (50.8 x 50.8 mm)	Check	Order