Description
Overview
The Littelfuse TDUH3001A is a solid-state delay-on-make timer relay engineered for precise, repeatable timing control in demanding industrial automation and OEM environments. Powered by microcontroller-based digital circuitry, it delivers consistent performance across a wide universal input range of 24–240V AC/DC — eliminating the need for multiple SKUs across different supply voltages.
When input voltage is applied, the timer immediately begins its preset delay cycle, holding the output off for the full duration. Once the delay expires, the output energizes and remains active until power is removed. DIP switch selectable timing ranges make field configuration straightforward, reducing setup time and minimizing wiring errors. Fully encapsulated solid-state construction means no mechanical wear, no contact degradation, and a significantly longer service life compared to traditional electromechanical timers.
Key Features
- Universal input voltage: 24–240V AC/DC for broad application compatibility
- Delay-on-make timing function for controlled output sequencing
- DIP switch selectable timing ranges for fast, flexible field setup
- Microcontroller-based circuitry delivers high repeat accuracy
- Solid-state encapsulated design — no moving parts, no mechanical wear
- Compact form factor suited for control panels and OEM integration
- Ideal for HVAC systems, pumps, conveyors, motors, and process automation
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