GRT8 -A/B Single-function time relay.

Suitable for applications where function and time requirements are know.
Time switch , possible to be used for pump decay time after switching heating off switching of fans.


  • Single-function relay with possibility of time setting by a potentiometer.
  • Choice of 2 functions:
    A:Delay ON
    B:Delay OFF
  • Time scale 0.1 s – 10 days divided into 10 ranges.
  • Relay status is indicated by LED.
  • 1-MODULE,DIN rail mounting.

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DIN Rail

1 Module


Product Selection

FunctionA:delay ON ; B delay OFF
Voltage rangeAC 230V(50-60Hz)
Output1* SPDT 2*SPDT
Switching voltage250VAC/24VDC

Technical Data

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/1.3W AC max.6VA/1.9W
Supply voltage tolerance-15% +10%
Supply indicationGreen LED
Time ranges0.1s-10days,ON,OFF
Time settingPotentionmeter
Time deviation10%-mechanical setting
Repeat accuracy0.2%-set value stability
Temperature coecient0.05%/ ℃,at=20℃ (0.05% ℉ at= 68 ℉ )
Current rating1 16A(AC1) 2 16A(AC1)
Switching voltage250VAC/24VDC
Min.breaking capacity DC500mW
Output indicationRed LED
Mechanical life1*10³
Electrical life(AC1)1*10³
Reset timeMax.200ms
Operating temperature-20℃ to +50℃ (-4 ℉ to 131 ℉ )
Storage temperature-35℃ to +75℃ (-22 ℉ to 158 ℉ )
Mounting/DIN railDin rail EN/IEC 60715
Protection degreeIP40 for front panel/IP20 terminals
max .cable size(mm)Solid wire max.1* 2. 5or 2* 1 .5 with sleeve max.1* 2. 5 (AWG 12)
Dimensions90* 18* 64mm
WeightSPDT W240 60g,A230-59g 2* SPDT W240 81g,A230-79g
StandardsEN 61812-1,IEC6947-5-1

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