Analog Timer AT8SDN

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90.00 Grams
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1 unit
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Analog and digital timers are widely used in various industrial processes to control the timing of devices or monitor life cycles of devices.

The AT8SDN star-delta analog timers from Autonics are ideal for starting high capacity motors with the star-delta transition. Various time setting ranges and star-delta switching time can be configured easily with adjustment switches. LED start/delta operation indicators allow users to easily identify the operation status of the timers.

The AT8SDN star-delta analog timer from Autonics comes with the following features:

  • DIN W48 x H48 star-delta timer.
  • Realization of a wide range of power supply: 100-200VAC 50/60 Hz/24-240VDC universal.
  • Wide range of setting time and switching time:
            1.T1 (setting time): Selectable 0.5 to 100 Sec.
            2.T2 (switching time): Selectable 0.05, 0.1, 0.2, 0.3, 0.4, 0.5 sec.
  • Simple setting time, switching time operation.
  • Easy to check output status by LED display.
  • Applications: Starting large capacitor motors.

Product Specifications




  • Function



Star-delta timer.

  • Control time setting range

0.5-100 sec.

  • Power supply

100-240VAC 50/60Hz /24-240VDC universal.

  • Allowable voltage range

90 to 110% of voltage rated.

  • Power consumption


100-240VAC: 3.2VA: 24-240VDC: 1.5W.

  • Reset time

Max 100ms.




Control output

  • Contact type

Star contact: SPST (1a), delta contact: SPST (1a).

  • Contact capacity

250VAC, 5A resistive load.




Relay life cycle

  • Mechanical

Min. 10,000,000 operations.

  • Electrical

Min. 100,000 operations (250VAC, 5A resistive load).

  • Repeat error

Max ±0.2%. ±10ms.


  • Star setting error

Max ±5%. ±50ms.


  • Voltage error


Max ±0.5%.

  • Temperature error


Max ±2%.

  • Star-delta switching time error


Max ±25%.

  • Insulation resistance

100MΩ (at 500VDC megger).

  • Dielectric strength

2000VAC 50/60Hz for 1 min.


  • Noise strength

±2KV the square wave noise (pulse width: 1µs) by the noise simulator.



  • Mechanical

0.75mm Amp. at freq. 0f 10-55Hz (for 1min.) in each X, Y, Z directions for 1 hour.

  • Malfunction

0.5mm Amp. at freq. 0f 10-55Hz (for 1min.) in each X, Y, Z directions for 10 min.



  • Mechanical

300m/s2 (approx. 30G) in each X, Y, Z directions for 3 times.

  • Malfunction

100m/s2 (approx. 10G) in each X, Y, Z directions for 3 times.



  • Ambient temp.

-10~55◦C, storage -25~65◦C.

  • Ambient humidity

25-85% HR, storage: 25-85% HR.

  • Approval


  • Accessory


  • Unit weight

Approx. 90g.

Brand Information

“Autonics” is a leading provider of automation solutions from South Korea. They develop and manufacture a wide range of automation products that are marketed worldwide. Their core products include various sensors, controllers, and motion devices, measuring equipment, laser marking systems, connection equipment and more. Autonics products are trusted and adopted by engineers in various industrial applications and their technology is widely applied in day-to-day automation devices.

With 12 international offices in South Korea, China, Japan, India, Vietnam, Indonesia, Malaysia, Russia, Turkey, USA, Brazil, Mexico, Autonics is able to provide comprehensive automation solutions for their customers across the globe.

Data Sheet

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Warranty Information

One Year Warranty
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