The Best Current Sensing Switches of 2022 – Reviewed and Top Rated
After hours researching and comparing all models on the market, we find out the Best Current Sensing Switches of 2022. Check our ranking below.
2,845 Reviews Scanned
SaleRank No. #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.
Rank No. #2
Current Sensing Switch, Normally Open Current Sensing Switch Adjustable AC 0.2-30A SZC23-NO-AL-CH
- 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.Hysteresis is less than 1% and can be used under strong magnetic conditions.
- The switch has no limit on the number of opening and closing, and the speed reaches the ms level.The outer casing is made of self-extinguishing material ABS.
- High-power MOS tube contactless electronic switch.Straight-through structure design, isolation withstand voltage up to 2000V.
- Suitable for AC current measurement and monitoring, AC motor overload , electronic switch of automatic control system and so on.
Rank No. #3
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.
Rank No. #4
Current Sensing Relay AC Current Sensing Switch 0-50A Normally Closed Current Sensor Monitoring Relay (NC50)
- Universal Outputs: Input through current: 0.2-50A AC Rated load: 0.3A@240V AC/DC.
- Accurate & Dependable: Offers a sensing range of 0.2 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
- 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 Closed current sensor:Suitable for AC current measurement and monitoring, AC motor overload protection, electronic switch of automatic control system and so on.
Rank No. #5
Automatic Vacuum Switch for Power Tools, Etoolcity Unique Current Sensing Technology to Delay Vacuum On to Prevent Circuit Overload, Eliminating Circuit Breaker Tripping
- Unique Current Sensing Technology. If the tool motor connected to the 'A' port exceeds 30W, the vacuum connected to the 'B' port will automatically delay 1s to turn on, which helps prevent circuit overloaded by large current if tool and vacuum power-on at the same time
- Make the Work More Effective. Automatic delays 1s to turn on the vacuum when you start your tool, and delays 7s to turn off the vacuum to clean the inlet tube when you complete your work. Saving time and electricity, reducing airborne toxin and work area noise that can lead many health problems
- Suitable for Most Medium Duty Workloads. Etoolcity automatic vacuum switch has a starting threshold of approximately 0.25 amps(30watts at 120V and 60watts at 220V), perfectly suited for medium-sized work loads such as most Miter Saws, Table Saws, Power Sanders and Routers, and extend the life of your vacuum
- More Safety. Adopting high-cost, UL-certified American Standard 14AWG power cord which allowable passage with a large current that more than 30A, the Etoolcity Automatic Vacuum Switch can work stably within 3600W. The switch's shell has PC+ABS V0 grade flame retardant material, it is more reliable and safe to protect work
- Two Installation Methods. You can use screws to fix the power module part, or use strong nano-markless hook sticker to attach directly to the wall. Both ways are very strong
Rank No. #6
CYTGOUPER Current Sensing Switch, Normally Open Current Sensing Relay,Adjustable Current Sensor Voltage Sensing Relay AC 0.2A-30A SZC23 NO AL CH Model
- ABS SELF-EXTINGUISHING MATERIAL - The current sensing relay outer casing is made of self-extinguishing material ABS. The switch has no limit on the number of opening and closing, and the speed reaches the ms level
- SELF-POWERED DESIGN - AC current sensing switch,no external power supply required. High-power MOS tube contactless electronic switch. Straight-through structure design, isolation withstand voltage up to 2000V
- WITH LED INDICATOR - LED indicator can conveniently and intuitively indicate the working status of the voltage sensing relay.Hysteresis is less than 1% and can be used under strong magnetic conditions
- PARAMETER - Current Sensor Type: Normally Open; Input Through Current: AC 0.5-50A; Threshold Point Range: 0.5-50A AC Adjustable; Switch Rated Load: AC/DC 0.3A at 240VAC
- WIDE APPLICATION - The electric current switche is suitable for AC current measurement and monitoring, AC motor overload , electronic switch of automatic control system and so on. It is an ideal choice for automated industrial equipment and store monitoring
Rank No. #7
DC Current Switch,Current Sensing Relay DC Current Sensing Switch 0-50A Amp Sensor Monitoring Relay D360
- Basic Function:When the piercing current exceeds the set value, the output switch will act Automatically reset when the piercing current is less than the set value.
- Set threshold: set the threshold when the perforation current exceeds the threshold, the relay will work, and when the perforation current is lower than the threshold, the relay will reset
- Indicator light: the indicator light is off when there is no current, the green light is on when the current is lower than the threshold, and the red light is on when the current is higher than the threshold
- D366 support Delay adjustment: power-off delay can be set from 0 to 99 seconds, clockwise to increase and counter-clockwise to decrease
- Detection range: 0-50A, 6A@240V AC/DC contact capacity
Rank 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, stable performance and long service life.
Rank No. #9
Current Sensing Switch 1~200A DC 10~30V Flameproof Adjustable Current Sensing Switch Adjustable DC Current Sensor Switch(Normally Open)
- 【FUNCTION】Adjustable DC current induction switch is a switch output detection, monitoring and product developed by using advanced non-sourced power supply (only for alternating current) technology
- 【IDEAL CHOICE】Compared with the traditional transformer and thermal protector, the current induction switch has the advantages of high accuracy, and long service life, it is an ideal choice for automatic industrial control equipment and power monitoring
- 【APPLICATION】Widely used in substations, variable frequency speed regulation devices, frequency converter devices, electrolytic plating, electric locomotives, street lamp monitoring, coal mines and other automation industries that require current monitoring
- 【PRINCIPLE】The current induction switch uses the principle of electromagnetic mutual inductance of current for safety, introduction, and convenience to monitor or detect the current of electrical equipment
- 【TWO TYPES】The switch type is normally open and normally closed, you can choose the appropriate product according to your needs, the startup time is less than 0.1 seconds. The shell material is fireproof ABS, which is safer to use
Rank No. #10
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)
Last update on 2025-06-14 / Affiliate links / Images from Amazon Product Advertising API
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