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Asymmetric Cycler Timer Relay GRT8-S2


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

SKU GRT8-S2 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 parameters GRT8-S1 GRT8-S2
Function Asymmetric cycle time relay
Supply terminals A1-A2
Voltage range AC/DC 12-240V(50-60Hz)
Burden AC 0.09-3VA/DC 0.05-1.7W
Voltage range AC 230V(50-60Hz)
Power input AC max.6VA/1.3W AC max.6VA/1.9W
Supply voltage tolerance -15%;+10%
Supply indication green LED
Time Ranges 0.1s-10days
Time setting potentiometer
Time deviation 10%-mechanical setting
Repeat accuracy 0.2%-set value stability
Temperature coefficient 0.05%/℃,at=20℃(0.05%℉,at=68℉)
Output 1×SPDT 2×SPDT
Current rating 16A(AC1)
Switching voltage 250VAC/24VDC
Min. breaking capacity DC 500mW
Output indication red LED
Mechanical life 1×107
Electrical life(AC1) 1×105
Reset time max.200ms
Operating temperature -20℃ to+55℃(-4℉to131℉)
Storage temperature -35℃ to+75℃(-22℉to158℉)
Mounting/DIN rail Din rail EN/IEC 60715
Protection degree IP40 for front panel/IP20 terminals
Operating position any
Overvoltage category III.
Pollution degree 2
Max.cable size(mm 2) solid wire max.1×2.5or 2×1.5/with sleeve max.1×2.5(AWG 12)
Tightening torque 0.4Nm
Dimensions 90×18×64mm
Weight 1×SPDT:W240-63g,A230-62g
Standards EN 61812-1,IEC6947-5-1

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