(0) Shopping cart
You have no items in your shopping cart.
Shopping Categories

    1-phase Current Monitoring Relay, 2-20A, 2×SPDT, AC/DC24V-240V

    The 1-phase current monitoring relay has 2×SPDT. It uses a remote current sensor to convert high current into low current for suitable measurement and protection equipment and can be connected to an external current sensor to extend the monitoring current range and penetrate the secondary current. The monitoring relay can provide an ultra-wide pressure range of AC/DC24V-240V to satisfy multiple scene requirements. Uses flame-retardant materials for added safety.
    SKU: ATO-MR-GRI806
    30-day Returns
    Free Shipping
    Delivery date: 6-12 days

    The single-phase current monitoring relay equipped with LED lights, quickly understands the working status of the equipment. It can be used through overdrive/flow monitor mode, which is equipped to handle a wide input voltage range, accepting AC/DC 12-240V inputs. The current monitoring relay has fast operation speed, high accuracy, good maneuverability, and a current range of 2-20A, which have led to its widespread use in power systems, such as rail switches, heating cables, and consumption of one-phase motors, indicating current flow.


    • Through center design, no need to disconnect the current circuit, throughcenter installation is convenient to use.
    • Cover/Under current monitoring mode can be set by knob.
    • With AC and DC universal testing specifications optional.
    • An isolation current transformer is adopted, and external current transformers can be connected to expand the monitoring current range.
    • 2 C/O output.
    • Universal supply AC/DC 24-240 V.
    • Relay status is indicated by LED.
    • 1-MODULE, DIN rail mounting.

    Model and Connotation

     1 phase current monitoring relay model and connotation

    Technical Parameters

    Model ATO-GRI8-06A ATO-GRI8-06B
    Function AC measurement AC/DC measurement
    Supply Terminals A1-A2
    Rated Supply Voltage AC/DC 24-240V
    Rated Supply Frequency 50/60Hz,0
    Burden Max 25VA
    Supply Voltage Tolerance -15%;+10%
    Current Range 2A-20A
    Current Frequency AC 50Hz AC 50Hz , DC
    Setting Method Potentiometer
    Supply Indication Green LED
    Setting Accuracy 10%
    Hysteresis 5%
    Output 2×SPDT
    Current Rating 8A/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°℃ ~+55°℃
    Storage Temperature -35℃~+75°℃
    Mounting/ DlN Rail Din rail EN/ IEC 60715
    Protection Degree IP20
    Operating Position Any
    Overvoltage Cathegory III.
    Pollution Degree 2
    Max. cable Size (mm2) 1×2.5mm or 2×1.5mm 0.4·Nm
    Dimensions 90mm×36mm×64mm
    Weight 90g
    Standards EN 60255-1

    Functions Diagram

    1 phase current monitoring relay functions

    Tr: Power-up delay.
    Tt: Tripping delay.

    Wiring Diagram

    1 phase current monitoring relay wiring1

    Monitored Current ≤ 20A

    1 phase current monitoring relay wiring2

    Monitored Current > 20A, Through CT Transformation

    1 phase current monitoring relay wiring3

    Panel Diagram

     1 phase current monitoring relay panel

    Dimensions (mm)

    1 phase current monitoring relay dimensionsa

    1 phase current monitoring relay dimensionsb

    Tips: The working principle of a single-phase current monitoring relay

    The working principle of a 1-phase current monitoring relay and the principles of electromagnetics and electromagnetic sensing. When an electric current occurs in this line, a constant electromagnetic wave is generated, producing an electric current. This sensitive electric current influences the magnetic field in the sphere and then influences the state of the contact point. Through the parameters of the rational design, precise control of the current control device can be realized. For example, by changing the number of circles, material, length, etc.

    Write your review for 1-phase Current Monitoring Relay, 2-20A, 2×SPDT, AC/DC24V-240V
    • Only registered users can write reviews
    • Bad
    • Excellent