Are you trying to find voltage monitoring relays among various brands on the market but aren’t sure where to begin? To assist you in finding the right one, we’ve put together a list of the 7 best to help you pick the perfect one!
We investigated and evaluated a number of the top-selling voltage monitoring relays on the market in order to create our list of the best. Making a decision among the many options available is never simple. There are an infinite number of models available, each with a distinct price. And as you’ll find out, the best options aren’t usually the ones you imagine! This comparison is rich and relevant because of the numerous factors that were employed. You will find products featured in this ranking not only based on their pricing but also on their features and other customers reviews. To write this review, we completed 18 hours of research and did 58 voltage monitoring relays tests. You won’t need to pick products at random any more. If you’re unsure of what to look for, browse our list and consult the buying guide!
An overview of our top picks
Table of contents
The best voltage monitoring relays you can buy today
- 2 INDICATOR LIGHT: Action time of over-voltage 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
- RAIL MOUNT: The voltage monitoring relay made of high quality meterial, with standard modular structure, 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
- Function: This voltage relay has overvoltage, undervoltage, phase loss, phase sequence and unbalanced three-phase voltage .
- Practicality: This 3-phase voltage relay does not require an external power supply. Has practical functions: power delay, output test, etc.
- The Composition of This Product: Three-phase voltage protector, chronograph and counter are integrated in one relay.
- 2 rest modules are optional, manual and automatic.
- The LCD can display data for easy reading.
- Small Size: This 3-Phase Monitoring Relay has a small compact size for easy and convenient use and install, and the size of the Monitoring Relay is 8.1 x 6.7 x 1.75 cm/3.1 x 2.6 x 0.6 inch, you can install it on any places around the room, saving a lot of place
- Multi-functioanl: This DPA51CM44 3-Phase Monitoring Relay has a widely use on the electric filed, and it can be applied to motor , elevator, air conditioning system, power system and other industries, very helpful tool during daily life
- Work Well: DPA51CM44 3-Phase Monitoring Relay features with strong anti-interference performance, so it helps maintain a constant and efficient work of the motor, it will provide an excellent performance during the working process
- 3-Phase Design: This Current Monitoring Relay is designed with 3-Phase Monitoring Relay to provide a correct phase sequence, without neutral, phase Loss and Incorrect phase sequence, so it can detect when all phases are present and have the correct sequence
- LED Indication: This DPA51CM44 Monitoring Relay features an LED indication for easier installation and trouble shooting, which permits a maximum degree of to be achieved for machines, plants and systems, and avoid far more significant subsequent damage, very convenient and useful
- 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 and control (tower cranes, elevators, agricultural equipment, refrigerated trucks); prevent reverse of equipment; normal/emergency power switch; prevent phase failure of dynamic loads.
- LED Indicator: The working status of the voltage control relay is indicated by the LED indicator.
- Small Size and Easy to Install: The voltage relay is ultra-small and can be mounted on a 35mm DIN rail.
- Product Name: Voltage Monitoring Relay; function: over voltage, under voltage; Rated voltage: DC 12V/24V/36V/48V; Overvoltage regulation range: 13-17v; Undervoltage adjustment range: 10-14v; capacity: 6A 250VAC (resistivity).
- Real Time Monitoring: The voltage monitoring relay could achieve real-time monitoring of dc overvoltage and undervoltage faults, and over-voltage, under-voltage value, and action time can be adjusted.
- 35mm Rail: With 35mm rail and standard modular structure, the voltage monitoring relay is easy to install, easy to operate.
- Main Features: The voltage monitoring relay is of 2 sets of normally open and normally closed contacts, 2 indicator lights indicate various working conditions, no additional auxiliary power supply is required.
- Typical Applications: The voltage monitoring relay is typically applied in dc motor, battery,UPS power supply, dc switchgear, dc panel, industrial control system.
- Product Type:Electronic Component
- Item Package Dimension:10.921 Centimeters L X 9.906 Centimeters W X 3.048 Centimeters H
- Country Of Origin: United States
- Item Package Weight:0.100 Pounds
- Standard modular construction, rail mounted.
- LCD display shows voltage value, fault status, parameter setting.
- Real-time monitoring of three-phase overvoltage, undervoltage, phase error, phase loss faulty.
- Powered by the measuring circuit, no additional auxiliary power required.
- Timekeeping and counting function.
- Modular Design: Features a standardized modular structure for rail-type installation.
- Universal Voltage Detection: Automatically identifies AC/DC voltage with no need to manually switch.
- Comprehensive Display: Utilizes a built-in LCD screen to display voltage values, fault statuses, and setting parameters in Chinese.
- Advanced Monitoring: Monitors for single-phase over-voltage and under-voltage faults in real time.
- Self-Powered: Requires no additional auxiliary power source.
- NOYITO Voltage Relay Module . Voltage detection display range: 0 - 99.9V; Voltage detection error: ±0.1V;
- Module working voltage:: DC 10-16V (12V version) DC18-28V (DC24V version) ("Note: The 24V pulse charger may have more than 30V pulse voltage and cannot be used as the power supply for this relay board.").
- Module working current: standby average 16mA/12V, relay pull-in 45mA/12V, digital tube off standby current 6mA/12V;
- Relay parameters: a set of conversion (normally open normally closed point), contact load: 10A/277VAC 10A/30 DC (NOTE： the maximum DC load 30V 10A) (maximum load current is 1A at 50V DC voltage).
- Relay Load: 10A / 277VAC 10A / 30 DC Max NOYITO Voltage Relay Module User Manual https://1drv.ms/u/s!AlzQUCOyZQhKgU8PmkPoht52mmzC?e=Lg6z9b
- Three phase voltage protector, chronograph and counter are integrated into one relay.
- It is equipped with protective functions for over-voltage, under-voltage, loss of phase, phase sequence and unbalanced three phase voltage.
- No external power requires.
- With useful functions: electricity delay, output test, etc.
- The LCD can show the data for easy reading. 2 rest module optional, manual and automatic.
- Good performance: The DPA51CM44 three-phase monitoring relay has strong anti-interference performance, which helps to keep the motor working continuously and efficiently, and performs well during work.
- Function: The three-phase monitoring relay is used to detect phase sequence and phase loss. Neutral, phase loss and wrong phase sequence are not included, so it can be detected that all phases are present and the phase sequence is correct.
- Application: It is widely used in motor , elevators, air compressors, motors, distribution boxes, water pumps, oil pumps, central air conditioning units, power systems and other industries.
- Practical tools: Keep the motor working continuously and efficiently, and it is a very useful tool in daily life.
- Compact: It is small in size and can be installed anywhere in the room, saving a lot of space and easy to install.
- IMPORTANT PARAMETERS: ❶Protection function: over voltage, under voltage; ❷Rated voltage: DC 12V/24V/36V/48V; ❸Overvoltage regulation range: 13-17v; ❹Undervoltage adjustment range:10-14v; ❺Contact capacity: 6A 250VAC (resistivity).
- REAL-TIME MONITORING: The voltage monitoring relay could achieve real-time monitoring of dc overvoltage and undervoltage faults, and over-voltage, under-voltage value, and action time can be adjusted.
- MAIN ADVANTAGE: The voltage monitoring relay is of 2 sets of normally open and normally closed contacts, 2 indicator lights indicate various working conditions, no additional auxiliary power supply is required.
- 35MM GUIDE RAIL: With 35mm guide rail and standard modular structure, the voltage monitoring relay is easy to install, easy to operate.
- TYPICAL APPLICATIONS: The voltage monitoring relay is typically applied in dc motor, battery, UPS power supply, dc switchgear, dc panel, industrial control system.
- Suitable for single-phase AC voltage 230V, 50/60Hz, rated working current 63A and below users or loads
- Safe and reliable, when line has overvoltage or undervoltage, overcurrent condition, the product can cut off the power supply instantaneously, protect the electrical equipment from damage
- Voltage protector relay has over voltage protection, under voltage protection and other functions
- Rated voltage, 230VAC 50/60Hz, Low power consumption and long mechanical life
- It is mainly used for the protection of over-voltage, under-voltage or over-current in the distribution line of residential household box or the protection of single-phase power equipment.
- Multiple: Overvoltage and undervoltage , voltage imbalance , phase fault and phase failure , overcurrent , automatic reset, and other multiple functions
- Multifunctional Protector: Strictly manufactured, carefully protected, and automatically reset to prevent prolonged power outages, quick response, and eliminate potential over voltage and under voltage dangers
- Overload Automatic Power Outage: The protector can effectively avoid damage to electrical equipment and machines caused by high voltage at the moment of power on, and avoid damage to electrical equipment and machines caused by short term power on and off flashes
- Clear Digital Display: The digital display displays the working voltage and current in real time, and the current and voltage display is clear at a . The panel buttons are complete and easy to operate, making it easy to use
- Easy Installation: The back design is standard for 35mm rail installation, making it easy and secure to install. This protector has quick response speed and sensitive internal components, saving you work time and making it more practical
- To protect electronics from damaging low voltages and prevent a deep discharge of a battery during an extended power outage, the LVD module will automatically disconnect the battery when the voltage falls below the user adjustable cutoff voltage. When power is restored the Smart Switch will automatically reconnect the battery. thereby protecting the battery from total discharge (helping to prolong the life of the battery). Applications for Inverter, Solar systems, Alarm systems, UPS systems, Mobile systems, or any application where you need to protect the battery from total discharge.
- Operating voltage DC 10 to 30V. Switch maximum support current up to 80Amp(for AC) or 50Amp(for DC). Can support 12V, 18V or 24V battery system. Reconnect and disconnect voltage 10 ~ 30V you can set it arbitrarily (NOTE: reconnect voltage must be greater than the disconnect voltage). Quiescent current consumption is less than 2mA (It's the same whether it's ON or OFF), So you almost never have to worry about your battery being drained by the product, unless you don't charge it for months on end.
- With a rocker switch for override, can set to ON / AUTO / OFF function, if you want switch output to be immediate and remain ON or OFF. (Note: When the battery voltage is lower than 9.5V, set the switch to ON state, the battery will not be forced on, this is to protect the battery and the module).
- Red DIP switch, programmable voltage setting for Disconnect and Reconnect (rocker switch state must set to AUTO, otherwise the automatic function is invalid). For the setting value of the voltage, you can refer to the label on the side of the module. Please note that when setting the red DIP switch, the reconnect voltage must be greater than the disconnect voltage, otherwise the function will not work.
- With three module output status LEDs, ON / ALARM / OFF, to help you intuitively understand the output status.
- After power-on, the action will be delayed for 1 second to accurately judge the battery voltage and reduce the instantaneous discharge current of the battery. When the battery drops to the disconnect voltage value, there will be a delay of 120 seconds. During this period, the ALARM function will be used to remind you that if the battery voltage does not return to the normal voltage during this period, the output will be turned off. When the battery voltage returns to the reconnect voltage value for 5 seconds, the output will be reconnected.
- Support external connect emergency switch, the switch must be a momentary-on type switch. When the output is in a protected low-voltage disconnected state, and rocker switch setting to AUTO status, and battery voltage >=10V, Trigger external emergency switch, the module will be forced ON for 120 seconds for you to complete the emergency. If the battery voltage is lower than 10V, the emergency switch will not produce any action.
- Support external connect active-buzzer or indicator light for alarm function. When the battery voltage drops to the disconnect voltage value set by the red DIP switch, the output will act synchronously with the ALARM led, on for 0.5 seconds and off for 0.5 seconds, alternating output. After flashing for 120 seconds, if the voltage of the battery still does not rise at this time, the module will automatically turn off the output.
- The yellow ALARM-led will be off and the red OFF-led will be on. The sink current capacity of this yellow wire is 500mA, please make sure that the active buzzer or indicator light you connect does not work more than 500mA. Please make sure that the active buzzer or indicator you connect matches your battery voltage (please do not connect pure led directly, because the working voltage of led is only 2~3V).
- The product design is based on microcontroller and high-power latching relay, especially optimized anti-interference ability to better support inverter load, and make the quiescent working current very small.
- IMPORTANT PARAMETERS: ❶Protection function: over voltage, under voltage; ❷Rated voltage: DC 12V/24V/36V/48V; ❸Overvoltage regulation range: 13-17v; ❹Undervoltage adjustment range:10-14v; ❺Contact capacity: 6A 250VAC (resistivity).
- REAL-TIME MONITORING: The voltage monitoring relay could achieve real-time monitoring of dc overvoltage and undervoltage faults, and over-voltage, under-voltage value, and action time can be adjusted.
- MAIN ADVANTAGE: The voltage monitoring relay is of 2 sets of normally open and normally closed contacts, 2 indicator lights indicate various working conditions, no additional auxiliary power supply is required.
- 35MM GUIDE RAIL: With 35mm guide rail and standard modular structure, the voltage monitoring relay is easy to install, easy to operate.
- TYPICAL APPLICATIONS: The voltage monitoring relay is typically applied in dc motor, battery, UPS power supply, dc switchgear, dc panel, industrial control system.
- RAIL TYPE-- Compact size and Standard modular structure, rail type installation, easy to install
- REAL-TIME MONITORING-- Real-time monitoring of dc overvoltage and undervoltage faults, quick response and high stability
- EASY -- No additional auxiliary power supply is required. 2 sets of normally open and normally closed contacts
- FEATURE-- Both over - voltage and under - voltage value can be adjusted. Overvoltage regulation range: 13-17v, Undervoltage adjustment range: 10-14v
- WITH LED LIGHTS-- Overvoltage Undervoltage Protector is equipped with 2 indicator lights indicate various working conditions, convenient to use
How to choose a good voltage monitoring relays
Does the idea of finding a fantastic voltage monitoring relays make you anxious? When it comes to purchasing this product, specifically when deciding which model to select, has your head been spinning between options? You are not alone if that is the case. We are aware of the pressure involved in the purchasing process!
Your presence here indicates that you are interested in voltage monitoring relays. Before choosing which product would be the best for your needs after being inundated with information, locate a reliable source with genuine selections. You can get that information from a variety of sources, including buying guides and rating websites, word-of-mouth recommendations from friends and family, online discussion forums where users can share their own experiences, product reviews that can be found all over the internet, and YouTube channels. You can only get the right product through exhaustive analysis. But you realize that’s not always simple. In order to ease your concerns, we have taken the time to develop a list of the top voltage monitoring relays products available right now. You might be wondering how we came up with the list. How was this buying guide developed?
First, we used our algorithms to gather as much reliable data as we could about these products. To verify all the data gathered, we used both artificial intelligence and a lot of algorithms.
Then, our experts used criteria that are recognized in the business to evaluate them according to their quality to price ratio, allowing us to choose the top voltage monitoring relays on the market right now!
The selection of the goods is not arbitrary. Before creating a list, we take into account a number of factors. Below are some of the criteria discussed:
Brand Value: What happens if you choose a dubious brand just because it appears to be a good deal? So the likelihood of receiving a product with a short shelf life increases. That is due to the fact that well-known brands have a reputation to uphold, while others do not. Top voltage monitoring relays brands strive to provide some distinctive traits that set them apart from the competition. So, hopefully one or more of the items on our list will be perfect for you.
Features: Useful features are all you need, not tons of them. We consider the important aspects and select the top voltage monitoring relays based on those.
Specifications: Numbers always help you measure the quality of a product in a quantitative way. We try to find products with higher specifications, but with the right balance.
Quality: A product’s quality may always be quantified with the aid of numbers. We look for goods with better standards that strike the proper balance. The best quality product that gets highly appreciated and recommended by experienced users.
Customer ratings: Would it be accurate to suggest that the voltage monitoring relays were used by hundreds of customers before you? Superior ratings indicate that many customers had better service.
Customer Reviews: Like ratings, provide you with accurate and reliable information about the product from genuine customers. Customer ratings are very important to all of us because they contain accurate and reliable information about the customer service we received from several hundred customers.
Seller Rank: This is very intriguing! Not only do you need a good voltage monitoring relays, you also need a product with rising sales that is trendy. It accomplishes two goals. First, the expanding user base proves the quality of the product. Second, given that number, producers must be able to offer greater quality and after-sales support.
Value: You get what you pay for, they say, so consider the value. Cheap isn’t always good and expensive isn’t always bad. However, that does not imply that spending a lot of money on a product that is flashy but underwhelming is a good idea. Before adding them to the list, we make an effort to evaluate how much value you can get for your money from your voltage monitoring relays.
Durability: Durability and reliability are closely related concepts. You will benefit from a strong and long-lasting voltage monitoring relays for months and years to come.
Product availability: Products come and go, and new ones replace the old ones. Most likely, a few new features and required changes were made. What use is it to use a supposedly good product if the maker no longer supports it? We make an effort to highlight products that are current and offered by one or more trustworthy sellers, if not more.
Negative Reviews: Yes, we do take that into account as well! The goods with the majority of bad reviews are filtered out and disregarded when we choose the best-rated one on the market.
These are the standards by which we selected our voltage monitoring relays. Do we end our process there? Hell no. The most crucial fact about us that you should be aware of is that we regularly update our website with current and pertinent information. We have one more layer of filtration since we place the greatest importance on reader satisfaction. Please let us know if any product included here is incorrect, irrelevant, subpar, or simply out of date. We always value your opinions, and we’ll work hard to make any necessary corrections to our list in response to them.
Why should you believe us?
There are now thousands of possibilities for these products on Amazon, but choosing the best one can be difficult and time-consuming. And what voltage monitoring relays should you purchase in 2022?
This guide is the result of more than 10 years of experience in researching, testing and writing about many topics. Each member of our team is an authority in their area. We read every article we could find online and every consumer review on every retail website for seven hours. Additionally, we discovered a ton of websites that offered helpful resources, including buying tips and thorough information on voltage monitoring relays.
