TDU/TDUH/TDUL Series - Encapulated Solid-State Delay-On-Make Timer

Littelfuse Delay on Make Relays
The TDU Series are encapsulated solid-state, delay-on-make timers that combine digital timing circuitry with universal voltage operation. The TDU offers DIP switch adjustment allowing accurate selection of the time delay over the full time delay range. This series is an excellent choice for process control systems and OEM equipment.


Operation (Delay-on-Make)
Upon application of input voltage, the time delay begins. The output is de-energized before and during the time delay. At the end of the time delay, the output energizes and remains energized until input voltage is removed.
Reset: Removing 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 RangeSample capableCompare
TDU3000A24 to 120VAC/DCNO open during timing-40° to 85°C (-40°F to 185°F)1 - 1 023s in 1s increments adjustableNo
TDU3001A100 to 240VAC/DCNO open during timing-40° to 85°C (-40°F to 185°F)1 - 1 023s in 1s increments adjustableNo
TDU3003A120 to 277VACNO open during timing-40° to 85°C (-40°F to 185°F)1 - 1 023s in 1s increments adjustableNo
TDUH3000A24 to 120 VAC/DCNO open during timing-40° t° 85°C (-40°F t° 185°F)10 - 10 230s in 10s increments adjustableNo
TDUH3001A100 to 240VAC/DCNO open during timing-40° t° 85°C (-40°F t° 185°F)10 - 10 230s in 10s increments adjustableNo
TDUL3000A24 to 120 VAC/DCNO open during timing-40° t° 85°C (-40°F t° 185°F)0.1 - 102.3s in 0.1s increments adjustableNo