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Asymmetric Cycler Timer Relay GRT8-S1

It is used for regular room ventilation, cyclic dehumidification, light control, circulating pumps, noon signs, etc.



SKU GRT8-S1 Category



2-Time Functions

  1. -Cycler beginning with pulse

  2. -Cycler beginning with pause

  • Function choice is done by an external jumper of terminals S-A1.
  • Time scale 0.1 s – 100 days devided into 10 time ranges:(0.1 s – 1 s / 1 s – 10 s / 0.1 min – 1 min / 1 min – 10 min / 0.1 hrs – 1 h / 1 hrs – 10 hrs / 0.1 day – 1 day /1 day – 10 days /3 days – 30 days / 10 days – 100 days).
  • Relay status is indicated by LED.
  • 1-MODULE, DIN rail mounting.


Technical parametersGRT8-S1GRT8-S2
FunctionAsymmetric cycle time relay
Supply terminalsA1-A2
Voltage rangeAC/DC 12-240V(50-60Hz)
BurdenAC 0.09-3VA/DC 0.05-1.7W
Voltage rangeAC 230V(50-60Hz)
Power inputAC max.6VA/1.3WAC max.6VA/1.9W
Supply voltage tolerance-15%;+10%
Supply indicationgreen LED
Time Ranges0.1s-10days
Time settingpotentiometer
Time deviation10%-mechanical setting
Repeat accuracy0.2%-set value stability
Temperature coefficient0.05%/℃,at=20℃(0.05%℉,at=68℉)
Current rating16A(AC1)
Switching voltage250VAC/24VDC
Min. breaking capacity DC500mW
Output indicationred LED
Mechanical life1×107
Electrical life(AC1)1×105
Reset timemax.200ms
Operating temperature-20℃ to+55℃(-4℉to131℉)
Storage temperature-35℃ to+75℃(-22℉to158℉)
Mounting/DIN railDin rail EN/IEC 60715
Protection degreeIP40 for front panel/IP20 terminals
Operating positionany
Overvoltage categoryIII.
Pollution degree2
Max.cable size(mm 2)solid wire max.1×2.5or 2×1.5/with sleeve max.1×2.5(AWG 12)
Tightening torque0.4Nm
StandardsEN 61812-1,IEC6947-5-1

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