Best Current Monitoring Relays of 2025

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Current monitoring relays are essential components in any electrical system that require constant monitoring and protection against overcurrent or undercurrent conditions. These relays are designed to detect and alert users of any abnormal current fluctuations, which can cause damage to equipment or pose a safety hazard. They are commonly used in industrial and commercial applications such as motor control, lighting, and HVAC systems. With their reliable and accurate monitoring capabilities, current monitoring relays are highly recommended for any electrical system that requires stable and safe operation.
At a Glance: Our Top Picks
Top 10 Current Monitoring Relays
Shelly 1PM Mini Smart Switch Relay
The Shelly 1PM Mini is a compact WiFi and Bluetooth smart switch relay, allowing you to automate your lights and small appliances easily. With the ability to monitor power consumption up to 8A, you can track energy usage in real time, helping you save money. This device transforms your old electrical appliances into smart devices, providing convenience and control from anywhere. Additionally, the Shelly Smart Control App enables you to manage settings and create custom scenes effortlessly, enhancing your home automation experience.
Schneider Electric Modular 3 Phase Control Relay
The Schneider Electric Control Relay offers simple and accurate adjustments, making it easy for you to set up quickly. Its innovative dial pointer LED indicator and diagnostic button are particularly useful for commissioning and troubleshooting, ensuring you can efficiently monitor your equipment. The relay’s plastic material contributes to its durability, while its design meets all monitoring requirements for mobile process control or network equipment, providing you with a reliable solution for your control needs.
ELKO EP Germany PRI-51/5 Power Monitoring Relay
The ELKO EP PRI-51/5 Relay is a reliable power monitoring solution designed for current monitoring up to 600 A. With a current range of 5 A, it allows you to easily track and manage electrical consumption. Operating at a voltage range of 24-230 V, this relay can adapt to various electrical systems, providing flexibility for your needs. Its convenient clip mounting for DIN rail 35 mm ensures straightforward installation, making it a practical choice for both professionals and DIY enthusiasts.
Adjustable AC Current Sensing Switch 0.2-30A
The Tyenaza AC Current Switch is an essential tool for monitoring AC current in automated industrial equipment. Its adjustable action current of 0.2-30A allows you to tailor the settings to your specific needs. The LED indicator provides a clear visual of the switch's working status, making it easy for you to monitor operations. With a high-power MOS tube contactless electronic switch, you benefit from reliable performance and a swift reaction speed reaching the millisecond level, ensuring your equipment operates smoothly and efficiently.
Schneider Electric Zelio Control Current Relay
The Zelio Control Relay by Schneider Electric offers a straightforward way to monitor your equipment. Its design allows for simple and accurate adjustments, ensuring a quick and easy setup process for you. With an innovative dial pointer LED indicator and a diagnostic button, commissioning and troubleshooting become hassle-free tasks. Additionally, the inclusion of a QR code on the instruction sheet makes setting up even more convenient, providing instant access to useful information.
GEYA Current Monitoring Relay with Adjustable Delay
The GEYA Current Relay offers exceptional features to enhance your current monitoring needs. With an adjustable delay of 0.5-10 seconds, you can effectively eliminate short current peaks, ensuring stable operation. The flexible adjustment via a potentiometer allows you to select from six different ranges, catering to various applications. Additionally, the relay can be used for current scanning from a current transformer, adding versatility to your setup. It operates universally with an AC/DC supply of 24-240V, making it adaptable for different environments.
HELLA 24V Mini Relay with Holder
The HELLA 24V Relay is a compact, normally open relay designed for efficient current monitoring. With a maximum rated switching current of 30 A, it can easily handle demanding tasks, providing you with reliability in various applications. The relay boasts an impressive lifespan of up to 100,000 switching operations, ensuring long-lasting performance. Its coil resistance of 320 Ohm makes it suitable for a range of electrical systems, giving you peace of mind when it comes to your power management needs.
DPA51CM44 3-Phase Monitoring Relay for Systems
The DPA51CM44 Monitoring Relay is designed to enhance the efficiency of three-phase systems. Its compact size allows for easy installation in various locations, making it a practical choice for users. This multi-functional relay is ideal for applications such as motor protection and air conditioning systems, providing essential safety features. With its strong anti-interference performance, you can rely on it to maintain consistent operation, ensuring your equipment runs smoothly. Additionally, the built-in LED indication simplifies installation and troubleshooting, offering peace of mind during operation.
3-Phase Monitoring Relay with Digital Display
The YWBL-WH Monitoring Relay offers real-time monitoring of motor faults such as over-current, under-current, and voltage imbalances. This ensures you can quickly identify issues, helping to prevent damage to your equipment. Its flexible settings allow you to adjust over-voltage and under-voltage values, making it easy to tailor the relay to your specific needs. The digital LCD display provides clear readings of voltage values and fault statuses, so you can easily keep track of your system's performance.
Acogedor DPA51CM44 3-Phase Monitoring Relay
The DPA51CM44 Monitoring Relay is designed to ensure the constant and efficient operation of your motor. With strong anti-interference performance, it protects your equipment from disruptions, allowing you to focus on your tasks without worry. Its compact size makes installation straightforward, saving you time and effort. This versatile relay is ideal for various applications, including motor protection, elevators, air conditioning systems, and power systems, providing peace of mind in any industry.
Frequently Asked Questions (FAQs)
1. What is current monitoring relay?
Current Monitoring (Current Relay) Current monitoring relay when senses the current flowing through the device is greater than the defined range of current then it turns off the machine and protects the device from damage due to over current. This is referred to as over-current protection.
2. What is a phase monitoring relay?
The devices provide protection against phase loss, phase reversal, and phase unbalance due to blown fuses, broken wires or worn contacts. They monitor simultaneous voltage drops/increases and help to prevent damaged machinery and the injury of personnel.
3. What is a voltage monitoring relay?
Simple and effective monitoring. Eaton's voltage monitoring relays are solid-state protective relays that automatically operate when one or more phases of the three-phase supply is lost, or when the phase sequence is reversed.
4. What is 3 phase monitoring relay?
Three Phase Monitoring Relays or Protective Relays, protect motors and equipment from expensive damage due to voltage faults on three-phase systems.
During our current monitoring relay research, we found 17 current monitoring relay products and shortlisted 10 quality products. We collected and analyzed 13,887 customer reviews through our big data system to write the current monitoring relays list. We found that most customers choose current monitoring relays with an average price of £26.77.
The current monitoring relays are available for purchase. We have researched hundreds of brands and picked the top brands of current monitoring relays, including Shelly, Schneider Electric, ELKO EP Germany, Tyenaza, GAEYAELE.

Harvey Wall was born and raised in Norwich. He mastered the art of tool production and finished at the prestigious Norwich University. His area of interest include cutting tools, abrasive finishing and power tools. Harvey is always looking for ways to improve the finesse of industrial tools via his myriads of researches. He also shares some of his experiences on many platforms while writing on tool products.