LEDK Delay On Operate Timer

  • Delay On Operate with Instantaneous Contact
  • Multi-voltage (12 – 230VAC/DC)
  • Multi-time range (0.1s – 100h)
  • 2 x SPDT Relay outputs
  • 17.5mm wide, DIN Rail mount
  • UL Listed

The timer is offered with two separate relays. One relay (Instantaneous contact) energises as soon as power is applied and remains in this state until power is removed. The second relay (Delay On Operate) is delayed and remains de-energised for the set time delay period. After the delay has elapsed, the relay energises. Power must be removed and re-applied to restart the function over again.

  • Timing function: Delay On Operate with Instantaneous Contact
  • Supply voltage: 12 – 230VAC/DC +/-15% (-10% if AC) (Order Code: 99-2103)
  • Time delay: 0.1s – 100h
  • Output: 2 x SPDT 8A @ 250V (AC1)
  • Dimensions(mm): W:17.5 x H:89 x D:66.5
  • Product standard(s): IEC 61812
Distributors Stock Code Link
RS Components 8285173 Go to product
Farnell 2677794 Go to product

Typical applications include:

  • Ventilation and heating controls
  • Conveyor start sequences
  • Industrial machine start circuits
  • Process control panels

Key benefits:

  • Provides immediate and delayed responses — One relay energises on power application and the second energises only after the selected delay.
  • Keeps a preparatory command active — The instantaneous relay remains energised during the delay and after the timed relay operates, until power is removed.
  • Matches the interval between stages — Selectable time ranges and fine adjustment allow the delayed response to follow the required waiting period.
  • Makes both output states visible — Separate relay LEDs show the instantaneous and delayed output states, alongside supply and timing indication.

Alternative product:

Icon: switch product
LEDO/2 Delay On Operate Timer Relay
  • Delay On Operate
  • Multi-voltage (12 – 230VAC/DC)
  • Multi-time range (0.1s – 100h)
  • DPDT Relay output
  • 17.5mm wide, DIN Rail mount
  • UL Listed
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