Ultra Timer – AT-372-TS

£29.05 ex. VAT


The AT-372 Ultra Timer from United Automation Ltd. offers versatile operation with a wide range of time settings, from 1 second to 64 weeks. Equipped with a double pole relay, it can efficiently switch mains and features selectable trigger and reset input polarity for added flexibility. The crystal-controlled design ensures precise timing, while the wide operating voltage range accommodates various power sources. With input and output level specifications, this timer operates reliably in temperatures ranging from -10°C to +60°C. Packaged in a sturdy cardboard carton measuring 77.9 X 47mm and weighing 80 grams, the AT-372 Ultra Timer is a dependable solution for diverse timing needs.


  • Time settings: 1 second to 64 weeks
  • Operating voltage range: Wide
  • Relay: Double pole
  • Input polarity: Selectable trigger and reset
  • Time accuracy: Crystal controlled
  • Temperature range: -10°C to +60°C
  • Packaging: Sturdy cardboard carton
    • Dimensions: 77.9 X 47mm
    • Weight: 80 grams

Time period 1 second to 64 weeks – accurate DIL switch time settings – 4 modes of operation – wide operating voltage.

• Working voltage 9.5 – 30V DC – auto selected by timer (no need to set input)
• “Pulse” activation after time out – option on two of the modes
• Selectable trigger and reset input polarity

• 1 second to 64 week time period. Selectable by DIL switch – crystal controlled for accurate time
• Double pole relay will switch mains – contacts rated at 8 Amps
• Four modes of operation

Setting time period – seconds, minutes, hours, days and weeks – could not be simpler – just look up the time required in the “time table” and set the DIL switch accordingly
Operating Mode A – trigger applied – times out and activates the relay – if auto link is fitted relay drops out after 20 seconds and is then “waiting for next trigger”
Operating Mode B – trigger applied – relay activates for time period then drops out. It is then ready for the next trigger.
Operating Mode C – once applied the trigger must remain for the duration of the time setting to activate the relay. An example of this would be monitoring a fire door. If the door is opened the timer starts (say it has been set for 3 minutes) if the door closes before the three minutes nothing happens, however if the door is open after the 3 minutes the relay will activate – if auto link is fitted relay drops out after 20 seconds and is then “waiting for next trigger”

Activation – trigger and reset input polarity is set by jumper links.

3762065, A-AT-372, 260-6580, HK01118

For further details, please reach out to United Automation Ltd.


Additional information

Download the technical document for this product below.

Download Technical Datasheet
Weight 0.8 kg
Technical Support
customer service United Automation

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