Top Monitoring Relay Reviews

YWBL-WH Monitoring Relay,JVRD6 Phase Sequence Protection Relay Monitoring Voltage Control Device

Function: Three-phase monitoring of phase sequence, phase loss..
Application: This monitoring relay is suitable for pumps, fans, blowers, motor elevators, cranes, central air conditioners, etc..
Construction and installation: This phase sequence relay uses standard modular construction and rail-mounted mounting..
Power supply mode: Powered by the measurement circuit, no additional auxiliary power supply is required..
Accessories: With 2 indicators to indicate various working conditions, the two groups usually open/close contacts..

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Veris,Current Switch and SPST Relay,N.O H735

The Hawkeye Relay Combination Series is the ideal solution for the automation installer..
These units combine a current switch and relay into a single package, reducing the space required for total control of fans and pumps..
The current switch and relay operate independently of one another..
These devices allow start/stop control and status monitoring with one device instead of two..

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Voltage Monitoring Relay DC 12V/24V/48V Over Voltage and Under Voltage Protection Relay 35MM Guide Rail Voltage Protector Device DC 12V

2 INDICATOR LIGHT: Action time of over-voltage protection relay can be adjusted, 2 sets of normally open and normally closed contacts, 2 indicator lights indicate various working conditions.
ADJUSTABLE: The overvoltage protector is not additional auxiliary power supply is required. Both over-voltage and under-voltage value can be adjusted.
REAL-TIME MONITOR: The overvoltage undervoltage protector relay is convenient to use, real-time monitoring of dc overvoltage and undervoltage faults.
GUIDE RAIL MOUNT: The voltage monitoring relay made of high quality meterial, with standard modular structure, guide rail type installation.
APPLICATION: The motor overvoltage protector can be used for dc motor, battery, UPS power supply, dc switchgear, dc panel, industrial control system.

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ATO Phase Voltage Monitoring Sequence Relay 1 Phase Voltage Protection Relay Under Over Voltage with 1 CO + 1 NC Contacts AC/DC 24-48V

【Measuring Circuit】Phase sequence protection relay is compatible with AC and DC supply, the rated voltage is AC/DC 24-48V.
【High-quality Product】LCD display indicating voltage, operation and fault status, adjustable reset mode: automatic/manual/automatic with power-on delay reset, fault recording for the lately 3 faults.
【Mutiple Functions】Adjustable overvoltage and undervoltage threshold, independent adjustable delay time for over-voltage, under-voltage.
【Output Contacts】Monitoring relay with 1 CO + 1 NC contacts, and the capacity is 6A, 250V AC (resistive load).
【Wide Applications】Voltage monitoring sequence relay can be applied in equipment or devices from undervoltage and overvoltage in the applications like air compressors, electric motors, pumps, fans, air-conditioning system, blowers, elevators, cranes, refrigeration equipment, laser equipment, industrial control system, etc..

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GRV8-02 Single Phase Monitor Relay, Keenso Adjustable Voltage Monitoring Relay Over Voltage Protection AC/DC Voltage Monitoring Relay A220V/ D12V/ AD24-48V/ AD120-240V (GRV8-02/AD240V)

【Effective & Accurate monitoring】-- This GRV8-02 Single Phase Monitor Relay mainly used to monitor the working voltage(true RMS measurement). 100% High accuracy, voltage measurement accuracy is ≤ 1%..
【Built-in LED Display】-- With built-in LED indicator, you can easily get the working status of the relay is indicated, very simple and convenient to use. The operating mode can be selected via the rotary knob..
【Super Function】-- Apply to over voltage protection for electrical equipment or compressors, emergency/backup power switching control. 100% safe and practical AC/DC Monitor Relay..
【Compact & Practical】-- GRV8-02 Monitoring Relay in professional design, compact size, only 18mm width, 35mm rail mounting. Portable and practical for you to operate!.
【Keenso Service】-- 100% test before shipping, fast money refund & perfect customer service! If You Have Any Questions, Just Connect Us By QA & E-Mail.

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AC 480V 3 Phase Circuit Protection Voltage Monitoring Relay 5 Indicators Heavy Duty Phase Failure Sequence Protection Relay Stable for Air Compressors

Convenient Monitoring: The voltage relay can monitor its own operating voltage (true rms measurement)..
High Accuracy: The voltage relay has 8 adjustable rated voltages, and the voltage measurement accuracy is less than 1%..
Application: Equipment protection and control (tower cranes, elevators, agricultural equipment, refrigerated trucks).
LED Indicator: The working status of the voltage control relay is indicated by the LED indicator..
Small Size and Easy to Install: The voltage protection relay is ultra-small and can be mounted on a 35mm DIN rail..

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Siemens 3UG4512-1BR20 Monitoring Relay, Three Phase Voltage, Insulation Monitoring, 22.5mm Width, Screw Terminal, 2 CO Contacts, Delay Time, 160-690 Line Supply Voltage

Convenient Monitoring: The voltage relay can monitor its own operating voltage (true rms measurement)..
High Accuracy: The voltage relay has 8 adjustable rated voltages, and the voltage measurement accuracy is less than 1%..
Application: Equipment protection and control (tower cranes, elevators, agricultural equipment, refrigerated trucks).
LED Indicator: The working status of the voltage control relay is indicated by the LED indicator..
Small Size and Easy to Install: The voltage protection relay is ultra-small and can be mounted on a 35mm DIN rail..

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AC Current Sensing Switch Flameproof Adjustable 0.2~30A IP30 Self-Powered Sensing Switch(Normally Closed)

Control of various automatic industrial control equipment, flash, buzzer, relay, single chip, or other power load equipment..
Using the electromagnetic mutual inductance principle of current, the advanced switch output detection, monitoring and protection alarm type products without power supply technology are adopted..
Widely used in substation, frequency control device, inverter device, electrolytic plating, electric locomotive, street lamp monitoring, coal mine and other need current monitoring automation industry..
Compared with traditional transformer and thermal protector, it has the advantages of high accuracy, stable performance and long service life..
The current-sensing switch is for safe, convenient monitoring or detecting the current of electric equipment. An ideal choice for automatic industrial control equipment and electric power monitoring..

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Siemens 3UG4631-1AA30 Monitoring Relay, Single Phase Voltage Monitoring, Screw Terminal, 1 CO Contacts, 0.1-60VAC/DC Measuring Range, 0.1-30V Hysteresis, 0-20s Delay Time, 24VAC/DC Auxiliary Voltage

Features: Undervoltage protector integrates three-phase voltage protector, chronograph and counter in one.
Multifunction: The protection relay has protection functions such as overvoltage, undervoltage, phase loss, phase sequence, three-phase voltage unbalance, etc.
Practical functions: The voltage monitoring relay has functions such as start-up delay and output test. 2 rest module optional, manual and automatic.
Specification: Monitoring Circuit: L1, L2, L3.
LCD Display: LCD data display, easy to read, no external power supply required.

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Phase Monitoring Relays JVR800-2 Under Over Voltage Protector, Three-Phase Voltage Monitoring Sequence Protection Relay with

This monitoring relay can monitor own working voltage..
8 kinds of rated voltages are adjustable, can apply to voltages in all regions of the world.
The working status of the relay is indicated by the LED indicator.
Ultra-small size and it is easy to install..
It is applied to mobile device connection control, causing accidents in equipment protection against reverse operation, normal/emergency power switch, preventing phase failure of power load..

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Three Phase Voltage Monitoring Relay, Three Phase Voltage Small Monitoring Relay Phase Sequence Relay for Mobile Device Connection Control for Mobile Device(M265)

This monitoring relay can monitor own working voltage..
8 kinds of rated voltages are adjustable, can apply to voltages in all regions of the world.
The working status of the relay is indicated by the LED indicator.
Ultra-small size and it is easy to install..
It is applied to mobile device connection control, causing accidents in equipment protection against reverse operation, normal/emergency power switch, preventing phase failure of power load..

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Siemens 3UG4511-1AP20 Monitoring Relay, Three Phase Voltage, Insulation Monitoring, 22.5mm Width, Screw Terminal, 1 CO Contacts, Delay Time, 420-690 Line Supply Voltage

This monitoring relay can monitor own working voltage..
8 kinds of rated voltages are adjustable, can apply to voltages in all regions of the world.
The working status of the relay is indicated by the LED indicator.
Ultra-small size and it is easy to install..
It is applied to mobile device connection control, causing accidents in equipment protection against reverse operation, normal/emergency power switch, preventing phase failure of power load..

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ABB 1SVR730760R0500 CM-SFS.22S CURRENT MONITORING RELAY

Current sensing relay for monitoring electrical current.
Current carrying wire is routed through an aperture.
Electrical isolation between circuits (SPDT).
Variable trip point range with adjustable timer for stability.
UL recognized for safety and RoHS compliant for hazardous substances.

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