LRTM/2 Dual Function Timer Relay

  • Dual Function – Asymmetrical Recycling or Delayed Pulse
  • Multi-voltage (12 – 230VAC/DC)
  • Multi-time range (0.1s – 100h)
  • DPDT Relay output
  • 17.5mm wide, DIN Rail mount
  • UL Listed

The timer is offered with two operating modes:

Off/On Recycling
When power is applied, the output relay remains de-energised for the set “off” time delay period. After this delay has elapsed, the relay energises and remains in this state for the set “on” time delay period. After this period has elapsed, the relay de-energises and the sequence starts over again and continues to operate like this for as long as the power is applied.

Delayed Pulse
When power is applied, the output relay remains de-energised for the set “off” time delay period. After this delay has elapsed, the relay energises and remains in this state for the set “on” time delay period. After this period has elapsed, the relay de-energises and remains in this state until power is removed and re-applied.

  • Timing functions: Asymmetrical Recycling (Off/On), Delayed Pulse
  • Supply voltage: 12 – 230VAC/DC +/-15% (-10% if AC) (Order Code: 99-2107)
  • Time delay: 0.1s – 100h
  • Output: DPDT 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 8285177 Go to product
Farnell 2677795 Go to product

Typical applications include:

  • Pumping and dosing systems
  • Automated test equipment
  • Process flushing equipment
  • Signalling control panels

Key benefits:

  • Supports one-shot or recurring operation — The selected mode provides either a single delayed pulse or repeated OFF/ON cycling.
  • Sets waiting and active periods separately — Separate OFF and ON adjustments define the initial waiting period and the following active period.
  • Coordinates two timed circuit responses — The DPDT relay provides two changeover poles that follow the same pulse or cycling sequence.
  • Prevents automatic repetition in pulse mode — After the delayed pulse ends, the relay remains de-energised until power is removed and reapplied.
VIDEO HERE
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