The Best Current Monitoring Relays

Looking for the best Current Monitoring Relays?

Discover now our comparison of the best Current Monitoring Relays. It is never easy to choose from the wide range of offers. On the market, you will find an incalculable number of models, all at different prices. And as you will discover, the best Current Monitoring Relays are not always the ones at the highest prices! Many criteria are used, and they make the richness and relevance of this comparison.
To help you make the best choice among the hundreds of products available, we have decided to offer you a comparison of the Current Monitoring Relays in order to find the best quality/price ratio. In this ranking, you will find products listed according to their price, but also their characteristics and the opinions of other customers. Also discover our comparisons by categories. You won’t have to choose your products at random anymore.

SaleNo. 1

CrocSee Miniature Current Switch, CS-TS0, Normally Open Amp Sensor Monitoring Relay, AC 1-50A Detectable

N.O. Universal Outputs: 2.5A @ 120 VAC/240VAC; In 240V circuit, only one 120V hot line is connected.
Self-powered, no external power supply required
Accurate & Dependable: Offers a sensing range of 1 to 50 amps and universal, solid-state outputs; Accuracy: 1%
Faster Response Time: Once current flow is detected, it closes a set of contacts immidiately; Response Time: ≤200ms
NOTE: If you want to test the operation of the sensor switch, a load must be applied across the NO contacts; otherwise, it will not work.

No. 2

Current Sensing Relay AC Current Sensing Switch 0-30A Normally Closed Current Sensor Monitoring Relay (N30)

Universal Outputs: Input through current: 0.2-30A AC Rated load: 0.3A@240V AC/DC.
Accurate & Dependable: Offers a sensing range of 0.2 to 30 amps and universal, solid-state outputs; Accuracy: 1%
Faster Response Time: Once current flow is detected, it closes a set of contacts immidiately; Response Time: ≤200ms
Mutual inductance current monitoring,security isolatino of input and output,Self-powered,adjustable with a potentiometer.LED indicator can conveniently and intuitively indicate the working status of the switch.
Normally open current sensor:Suitable for AC current measurement and monitoring, AC motor overload protection, electronic switch of automatic control system and so on.

No. 3

Current Sensing Relay AC Current Sensing Switch 0-50A Normally Closed Current Sensor Monitoring Relay (M3050)

Multi-Purpose: M-3050 AC current sensing switch is specially designed and manufactured to solve AC current monitoring. It uses the principle of mutual inductance to sense AC direct current, isolate the AC current, output normally open or normally closed switch signals, and directly control various automated industrial equipment, such as flash lamps, buzzers, relays, microcontrollers or other power load equipment.
Upgrade: Compared with traditional transformers, thermal protectors and other devices, using this device can not only get more accurate and timely control, but also greatly simplify the design and reduce costs. Self-powered, no external power supply required. Input through current: 0-30A AC Rated load: 0.3A@240V AC/DC.
High Performance: The switch has no limit on the number of times of opening and closing, and the response speed reaches the millisecond level. The hysteresis is less than 1% and can be used under strong magnetic conditions. Through structure design, isolation withstand voltage up to 2000V.
LED Indication: The action current is 0-30A AC, which can be adjusted by the potentiometer. The LED indicator light can easily and intuitively indicate the working status of the switch.
ABS material: High-power MOS tube non-contact electronic switch is used, and the shell is made of self-extinguishing material ABS, which is heat-resistant, acid-alkali-resistant, high impact strength and stable in performance.

No. 4

MECCANIXITY Miniature Current Switch 8-35V 0-50A DC Current Sensing Switch Sensor Monitoring Relay Adjustable Normally Open/Normally Close, D360

The DC current sensing switch uses the principle of mutual induction to sense AC, isolate DC current, and output a normally open or normally closed switch signal. Compared with traditional transformers, thermal protectors, etc., it can detect and control more accurately and timely.
Current monitoring relay type: normally open/normally closed; Rated load: 0.3A@240V AC/DC; Monitoring current: 0-50A DC; Auxiliary voltage: 8-35V; Response time: <200ms.
LED indication: When the current is lower than the set value, the green signal light is on; when the current is greater than the set value, the red signal light is on; ABS material: The sensor monitoring relay shell uses ABS fireproof material, which is heat-resistant, high in impact strength and stable in performance. High performance: the number of switch opening and closing is unlimited, the response speed is extremely fast, and the response time is <200ms
Normally open: When the through-current is lower than the set value (the cutoff point is adjustable), the disconnection signal is always output; when the through-current is greater than the set value, the closing signal is output. Normally closed: When the through-current is lower than the set value (cutoff point is adjustable), the closed signal is always output; when the through-current is greater than the set value, the open signal is output.
Please select the appropriate current size before purchasing.(The product comes with instructions)

No. 5

nodehawk Miniature Current Switch,Current Sensing Switch,with Rails,Normally Open Amp Sensor Monitoring Relay, AC 0-30A Detectable（M3050）

Multi-Purpose: M3050 AC with rails current sensing switch is specially designed and manufactured to solve AC current monitoring. It uses the principle of mutual inductance to sense AC direct current, isolate the AC current, output normally open or normally closed switch signals, and directly control various automated industrial equipment, such as flash lamps, buzzers, relays, microcontrollers or other power load equipment.
Upgrade: Compared with traditional transformers, thermal protectors and other devices, using this device can not only get more accurate and timely control, but also greatly simplify the design and reduce costs. Self-powered, no external power supply required. Input through current: 0-30A AC Rated load: 0.3A@240V AC/DC.
High Performance: The switch has no limit on the number of times of opening and closing, and the response speed reaches the millisecond level. The hysteresis is less than 1% and can be used under strong magnetic conditions. Through structure design, isolation withstand voltage up to 2000V.
LED Indication: The action current is 0-30A AC, which can be adjusted by the potentiometer. The LED indicator light can easily and intuitively indicate the working status of the switch.
ABS material: High-power MOS tube non-contact electronic switch is used, and the shell is made of self-extinguishing material ABS, which is heat-resistant, acid-alkali-resistant, high impact strength and stable in performance.

SaleNo. 6

Current Sensing Switch, Normally Open Current Sensing Relay Adjustable AC 0.2A -30A (SZC23 No AL-CH Model)

Self-powered, no external power supply required.
Action current 0.2-30A AC, adjustable with a potentiometer.
LED indicator can conveniently and intuitively indicate the working status of the switch.
High-power MOS tube contactless electronic switch.
The switch has no limit on the number of opening and closing, and the speed reaches the ms level.

No. 7

DPA51CM44 3 Phase Monitoring Relay Current Voltage Monitoring Relay Phase Sequence Protector 208-480VAC Phase Sequence Protector with Indicator for 3 Phase Motor

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

No. 8

AC Current Sensing Switch 0.2~30A Self-Powered Current Sensor Monitoring Relay (Normally Open)

Using the electromagnetic mutual inductance principle of current, the advanced switch output detection, monitoring and alarm type products without power supply technology are adopted.
Controlling of various automatic industrial control equipment, flash, buzzer, relay, single chip, or other power load equipment.
The current sensing switch is for , convenient monitoring or detecting the current of electric equipment. An ideal choice for automatic industrial control equipment and electric power monitoring.
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, and long service life.

No. 9

Veris,Current Sw & SPST Relay,Splt,VFD,N.O., H934

Hawkeye 934 microprocessor-based current status switches provide a unique solution for accurately monitoring status of motors controlled by variable frequency drives.
The H934 stores the sensed amperage values for normal operation at various frequency ranges in non-volatile memory.
This information allows the device to distinguish between a reduced amp draw due to normal changes in the frequency and an abnormal amp drop due to belt loss or other mechanical failures.
Applications: Monitoring positive status on motors controlled by variable frequency drives. Replacing pressure switches. Microprocessor-based.

No. 10

MECCANIXITY Miniature Current Switch 0.08-10A Normally Open AC Current Sensing Switch Sensor Monitoring Relay, M3010

The AC current sensing switch uses the principle of mutual induction to sense AC, isolate AC current, and output normally open or normally closed switch signals. Compared with traditional transformers, thermal protectors, etc., it can detect and control more accurately and timely.
Current Monitoring Relays Type: Normally Open (N.O.); Rated load: 0.3A@240V AC/DC; Monitoring current: 0.08-10A AC; Response time: <200ms
LED indication: The action current is 0-30A AC, and the sensor switch is equipped with an LED indicator light, which can intuitively see the working status of the switch; ABS material: The sensor monitoring relay shell uses ABS fireproof material, which is heat-resistant, high in impact strength and stable in performance.
High performance: The switch has no limit on the number of times it is opened and closed, and the response speed is extremely fast, with a response time of <200ms
Please use the current sensing relay at the rated voltage and current, and do not exceed the rated current.(The product comes with instructions)

What is the purpose of a comparison site?

When you search for a product on the Internet, you can compare all the offers that are available from the sellers. However, it can take time when it is necessary to open all the pages, compare the opinions of the Internet users, the characteristics of the products, the prices of the different models… Offering you reliable comparisons allows us to offer you a certain time saving and a great ease of use. Shopping on the Internet is no longer a chore, but a real pleasure!
We do everything we can to offer you relevant comparisons, based on various criteria and constantly updated. The product you are looking for is probably among these pages. A few clicks will allow you to make a fair and relevant choice. Don’t be disappointed with your purchases made on the Internet and compare the best Current Monitoring Relays now!

Last update on 2025-07-04 / Affiliate links / Images from Amazon Product Advertising API

Search and kompare over thousands products reviews

Looking for the best Current Monitoring Relays?

What is the purpose of a comparison site?

Related posts: