Current Monitoring Relay, Over/ Under Current, 1A/2A/5A/8A/16A, AC/DC24V-240V

Write a review

$61.24

The current monitoring relay has 1 SPDT switch, suitable for rated voltage AC/DC 24V-240V range, with undercurrent/over current protection. The current limiting relay has an LED indicator to display the operating status, mainly used to monitor whether the current in the circuit exceeds the preset value and take corresponding measures when it exceeds the preset value. It has a built-in isolated current transformer, and an external current transformer can be connected to expand the monitoring current range. In addition, it can be flexibly adjusted through a potentiometer, with 6 current specifications to choose from.

Current Type *
Current Setting Range *

SKU: ATO-MR-GRI8

Qty:

30-day Returns

Free Shipping

Delivery date: 6-12 days

Overview

The current monitoring relay is a protection device in the power system, which can monitor the current in the circuit in real-time, such as monitoring the heating conditions in the track switch, heating cables, and the consumption of single-phase motors, to prevent circuit overload, short circuit, and other faults from causing equipment damage or fire and other safety accidents. It is compact, only 18mm wide, and easy to install on the 35mm rail.

Feature

Adjustable delay 0.1-10 s to eliminate short current peaks, to avoid starting current of motor loads.
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 it for current scanning from the current transformer.
Universal supply AC/DC 24V-240V.
Relay status is indicated by LED.
1-MoDULE, DIN rail mounting.

Technical Parameters

Model	ATO-GRI8-01	ATO-GRI8-02
Function	Over Current	Under Current
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 (Optional)	0.5A (0.05~0.5A); 1A (0.1~1A); 2A (0.2~2A); 5A (0.5~5A); 8A (0.8~8A); 16A (1.6~16A)
Current Frequency	AC 50Hz
Max. operating Current	1A, 2A, 5A, 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	10%
Repeat Accuracy	<1%
Temperature Dependence	<0.1%/°C
Limit Values Tolerance	5% (10% for 0.05 - 0.5A range)
Hysteresis	5%
Temperature Coefficient	0.05%/°C, at=20°C (0.05%°F, at=68°F)
Output	1×SPDT
Current Rating	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°C to +55°C (-4°F to 131°F)
Storage Temperature	-35℃ to +75°C (-22°F to 158°F)
Installation	35mm rail installation
Mounting/ DIN rail	Din rail EN/ IEC 60715
Protection Degree	lP40 for front panel/ IP20 terminals
Operating Position	Any
Overvoltage Cathegory	III.
Pollution Degree	2
Max. cable Size (mm² )	Solid wire max. 1×2.5 or 2×1.5/ with sleeve max. 1×2.5 (AwG 12)
Dimensions	90mm×18mm×64mm
Weight	64g
Standards	EN 60255-1

Wiring Diagram

Panel Diagram

Function Diagram

GRI8-01

GRI8-02

Dimensions (mm)

Tips: How to choose a suitable current monitoring relay?

The first is the electrical parameters, including rated voltage, rated current, action time release time, etc. These parameters must meet the needs of the actual application scenario. It is best to be able to combine the working environment, and environmental factors such as temperature, humidity, vibration, etc. must be considered to select the size that meets the installation space requirements.

The second is the relay type, which requires selecting the appropriate relay type and function according to the load type and control requirements, such as AC relay, DC relay, solid-state relay, etc. In addition, some additional functions cannot be ignored. Some relays may have additional functions, such as fault indication, remote control, communication interface, etc.

Write your review for Current Monitoring Relay, Over/ Under Current, 1A/2A/5A/8A/16A, AC/DC24V-240V