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Current Monitoring Relay GRI8-03

Serves for monitoring of heating in rail-switches, heating cables, consumption of one-phase motors, indicates current flow.

SKU GRI8-03 Category


Current Monitoring Relay

GEYA Current Monitoring Relay is a solid-state relay with SPDT silver cadmium oxide contact and quick-connect terminals. It features start-up inhibit adjustable hysteresis, multiple voltages, automatic or manual control and LED relay status indicator. Our Current Monitoring Relay is suitable for industrial, automation and process control.

GEYA Current Monitoring Relay is with current measuring through an internal shunt. Programmable latching or inhibit at a set level for mounting on DIN-rail accordance with DIN/EN. It has LED indication for relay, alarm and power supply ON. It can be used to avoid relay operation when not desired.

GEYA Current Monitoring Relay is a complete current solution which mounts directly to a DIN rail. It allows the user to monitor the current of one circuit and switch another circuit in case of an overcurrent or undercurrent condition.

Our Current Monitoring Relay has LED indicator, the green LED is on when power is applied to the input terminals and the red LED blinks during time-out and is ON when the output is energized.


  • Serves for monitoring of heating in rail-switches, heating cables, consumption of one-phase motors, indicates current flow.

Function Features

  • Adjustable delay 0.1 – 10 s to eliminate short current peaks.
  • Flexible adjustment by potentiometer, choice of 6 ranges: AC 0.05-0.5A; AC 0.1-1A; AC 0.2-2A; AC 0.5-5A; AC 0.8-8A; AC 1.6-16A
  • Power up delay.
  • Possible to use for current scanning from current transformer.
  • Universal supply AC/DC 24 – 240 V.
  • Relay status is indicated by LED.
  • 1-MODULE,DIN rail mounting.


1.GRI8-01+Transformer wiring diagram-1 2.GRI8-01+Transformer wiring diagram23.

3.GRI8-03 Self locking power off wiring diagram

4.GRI8-03+GYHC-16 wiring diagram

Technical parameters GRI8-01 GRI8-02 GRI8-03 GRI8-04
Function Overcurrent Under current Over/Under Over/Under
Supply terminals A1-A2
Rated supply voltage AC/DC 24V-240V
Rated supply frequency 50/60Hz,0
Burden max 25VA
Supply voltage tolerance -15%;+10%
Current range (AC 50Hz) 0.05A-0.5A/0.1A-1A/0.5A-5A/0.8A-8A/1.6A-16A
Max. permanent current:(B1-B2) 2A/4A/8A/12A/22A
Current adjustment potentiometer
Time delay adjustable 0.1-10 s
Power up delay adjustable 0.1-10 s
Supply indication green LED
Setting accuracy 0.1
Repeat accuracy <1 %
Temperature dependency <0.1 % /°C
Limit values tolerance 5 % (10% for 0.05-0.5A range)
Hysteresis 0.05
Temperature coefficient 0.05%/℃,at=20℃(0.05%℉,at=68℉)
Output 1×SPDT
Current rating 1×10A(AC1)
Switching voltage 250VAC/24VDC
Min. breaking capacity DC 500mW
Output indication red LED
Mechanical life 1×107
Electrical life(AC1) 1×105
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(mm2) solid wire max.1×2.5or 2×1.5/with sleeve max.1×2.5(AWG 12)
Tightening torque 0.8Nm
Dimensions 90×18×64mm
Weight 69g
Standards IEC60947-5-1
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