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YWBL-WH Voltage Monitoring Relay Over-Voltage and Under-Voltage Relay 35MM Rail 13-17V 10-14V(DC12V)
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YWBL-WH Voltage Monitoring Relay Over-Voltage and Under-Voltage Relay 35MM Rail 13-17V 10-14V(DC12V)
Real-time monitoring of dc overvoltage and undervoltage faults with adjustable action time and value
YWBL-WH Voltage Monitoring Relay Over-Voltage and Under-Voltage Relay 35MM Rail 13-17V 10-14V(DC12V)
Item #: 14600616

YWBL-WH Voltage Monitoring Relay Over-Voltage and Under-Voltage Relay 35MM Rail 13-17V 10-14V(DC12V)

Item #: 14600616

KES 5581

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*All items will import from US

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Real-time monitoring of dc overvoltage and undervoltage faults with adjustable action time and value
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What Stands Out

Dual Voltage Protection
Monitors both over-voltage and under-voltage conditions, ensuring continuous protection for sensitive equipment, which helps prevent potential damage from electrical fluctuations.
Easy Installation
Designed for 35mm rail mounting, this relay simplifies installation in various electrical setups, making it accessible for both professionals and DIY enthusiasts.
Wide Voltage Range
Supports a comprehensive voltage range of 10-17V DC, providing versatility for different applications, ensuring reliable performance across varying conditions.

Product Details

Shop the best Voltage Monitoring Relay for DC 12V, 24V, 36V, and 48V at Ubuy Kenya. Get reliable over-voltage and under-voltage protection. Buy now!
Package Weight1 Pound

Who Should Buy?

Suitable For
  • DIY Electricians

    Ideal for DIY electrical projects requiring over and under-voltage protection for safety and reliability.

  • Equipment Protection

    Perfect for protecting sensitive equipment from voltage fluctuations that may cause damage or malfunction.

  • Industrial Use

    Suitable for industrial settings where consistent voltage levels are critical for operational efficiency and equipment longevity.

Not Suitable For
  • Casual Users

    Not suitable for casual users without electrical knowledge, as installation requires technical expertise.

Product Description

YWBL-WH Voltage Monitoring Relay Over-Voltage and Under-Voltage Relay 35MM Rail 13-17V 10-14V(DC12V)

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Customer Questions & Answers

  • Question: What is a voltage monitoring relay, and how does it work?

    Answer: A voltage monitoring relay is a device that monitors voltage levels within a specified range and can activate an output signal when voltage exceeds set thresholds. It is designed to prevent damage due to over-voltage or under-voltage conditions. When the monitored voltage either rises above or falls below predefined limits, the relay promptly disconnects or reconnects the circuit, ensuring the safety and functionality of connected electrical devices. This is particularly useful in industrial environments where maintaining consistent voltage is crucial for sensitive equipment.
  • Question: What voltage ranges does the Voltage Monitoring Relay support?

    Answer: This relay supports multiple input voltage ranges including 12V, 24V, 36V, and 48V, allowing for versatile applications across various systems. Specifically, it operates effectively at under-voltage levels between 10-14VDC and over-voltage levels between 13-17V. This adaptability makes it ideal for use in different electrical setups, whether in residential systems or industrial operations, ensuring reliable monitoring across diverse applications from automotive to manufacturing machinery.
  • Question: Where can I find installation instructions for the Voltage Monitoring Relay?

    Answer: Installation instructions are typically included in the product packaging, featuring a step-by-step guide for proper setup. Additionally, many online resources such as the manufacturer's website and technical support forums offer comprehensive guidance. If you're new to installing such devices, seeking professional assistance or consulting an electrician may help ensure the setup is done correctly, thus maximizing the relay's functionality and avoiding potential issues during operation.
  • Question: How can I install the Voltage Monitoring Relay on a DIN rail?

    Answer: The Voltage Monitoring Relay is designed to be mounted on a 35mm DIN rail. To install it, simply ensure your DIN rail is securely fixed in place. Slide the relay down onto the rail until you hear a click, indicating it is locked in position. Make sure to connect the input and output terminals according to the specifications in the manual. This allows for an organized setup within control panels, ensuring the device is easily accessible for monitoring and maintenance.
  • Question: What applications are best suited for voltage monitoring relays?

    Answer: Voltage monitoring relays are essential in various applications including industrial automation, pump control systems, and renewable energy installations like solar power. They are ideal for protecting sensitive electronic equipment that may be compromised by voltage fluctuations. For instance, in a solar setup, the relay can disconnect the system during over-voltage events, thus preserving the integrity of inverters and batteries and promoting a longer service life of your electrical components.
  • Question: Can the Voltage Monitoring Relay prevent equipment damage?

    Answer: Yes, the Voltage Monitoring Relay is specifically designed to prevent equipment damage caused by voltage fluctuations. By constantly monitoring voltage levels and disconnecting the circuit if thresholds are exceeded, it acts as a first line of defense against potential electrical faults. This is particularly critical for machinery and sensitive devices that rely on stable power supply, thereby enhancing overall system reliability and preventing costly downtime caused by electrical failures.
  • Question: How does the relay distinguish between over-voltage and under-voltage?

    Answer: The relay is engineered to recognize specific voltage thresholds predefined during setup. It continuously compares the incoming voltage level against these set points—activating its protective mechanism either by disconnection or activation of alarms when the voltage falls below the under-voltage limit or exceeds the over-voltage threshold. This intelligent monitoring ensures timely responses to anomalies within the power supply, thus safeguarding connected equipment from damage.
  • Question: What indicates that the Voltage Monitoring Relay is functioning properly?

    Answer: A properly functioning Voltage Monitoring Relay is often indicated by LED status lights, which show whether the relay is receiving power and operating within its normal parameters. When the relay is actively monitoring voltage and is within the safe operational range, the indicator lights should remain steady. If a fault condition occurs, typically, the light will change color or blink, alerting users to take immediate action, ensuring continuous visibility of the relay's operational status.
  • Question: How do I reset the Voltage Monitoring Relay after it has tripped?

    Answer: To reset the Voltage Monitoring Relay after a trip due to over-voltage or under-voltage, first identify and rectify the fault condition that caused the trip. Once the issue is resolved, you typically need to press the reset button located on the relay. This will restore normal operations and allow the relay to begin monitoring voltage levels again. Always ensure that the environment is safe before resetting to avoid recurring trips due to unresolved issues.
  • Question: Where can I buy the Voltage Monitoring Relay in Kenya?

    Answer: You can purchase the Voltage Monitoring Relay at Ubuy in Kenya. Ubuy offers a convenient online shopping experience, providing a wide range of electrical components, including this voltage monitoring relay. You can find detailed product descriptions, specifications, and customer reviews, helping you make an informed decision while ensuring the reliability and quality of your purchase.

YWBL-WH Voltage Monitoring Relays Editorial Review

The YWBL-WH Voltage Monitoring Relay is a well-made DC voltage sensor relay designed for over-voltage and under-voltage protection. It is DIN rail mounted and has a delay function. The relay operates independently for over-voltage and under-voltage thresholds. It has clearly-labeled controls for setting the upper and lower limits and the time delay. The device has two indicator lights, red for out-of-range voltage and green for in-range voltage. It is suitable for use with different battery voltages.

Customer Reviews & Ratings

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Pros

  • Well-made and reliable
  • DIN rail mounted
  • Independent operation for over-voltage and under-voltage thresholds
  • Clear controls for setting limits and time delay
  • Indicator lights for easy monitoring

Cons

  • Difficult to set into the exact voltage range

Platform Trust & Buyer Confidence

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4.2/5 9250 + reviews
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MA
Mohammad
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“Excellent quality and original too,when ubuy send original things I will appreciate that ,I very satisfied thank you”

23 July 2026 · via Trustpilot
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Chitra
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“The order and delivery progress was communicated very well. Package arrived within the estimated time. Products arrived as expected in good condition.”

22-Jul-26 · via Trustpilot
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“Good supply of products. Safe payment methods, and shipment worldwide! Genuine products.”

23-Jul-26 · via Trustpilot
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Onesi
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“Was my first time buying a product from Ubuy, but I found it so helpful. This is reliable. Gonna place a new order!”

22 July 2026 · via Trustpilot
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SAO JOHN
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“Ubuy is a great online platform to buy stuff. Reliable, fast delivery time and great value for money. I've been using Ubuy online shopping platform for three years now and will continue to do so.”

23 July 2026 · via Trustpilot
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KES 5581

Order now and get it around Thursday, August 27

QTY:

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Fastest cross-border delivery

Features & Benefits

  • Standard modular structure
  • Guide rail type installation
  • Real-time monitoring of overvoltage and undervoltage
  • Both over and under voltage value is adjustable
  • 2 sets of normally open and normally closed contacts
  • No additional auxiliary power supply required

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