Best Current Monitoring Relays. Reviews November, 2020

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

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

Current price: 19.99 USD


Check price and availability


  • Ideal for use in HVAC Systems, Fans, Motors, Pumps, Refrigeration, BAS and other applications
  • Faster Response Time: Once current flow is detected, it closes a set of contacts immidiately; Response Time: ≤200ms
  • Accurate & Dependable: Offers a sensing range of 1 to 50 amps and universal, solid-state outputs; Accuracy: 1%
  • Self-powered, no external power supply required
  • N.O. Universal Outputs: 2.5A @ 120 VAC/240VAC; In 240V circuit, only one 120V hot line is connected.

More Info

Current Sensing Switch, Normally Open Current Sensing Switch Adjustable AC 0.2-30A SZC23-NO-AL-CH for AC Current Measurement and Monitoring

Search only Vikye brand name
Current Sensing Switch, Normally Open Current Sensing Switch Adjustable AC 0.2-30A SZC23-NO-AL-CH for AC Current Measurement and Monitoring

Current price: 18.59 USD


Check price and availability


Height: 0.9842519675 Inches

Length: 2.5590551155 Inches

Width: 1.968503935 Inches

Weight: 0.1322773572 Pounds

  • Ideal for use in HVAC Systems, Fans, Motors, Pumps, Refrigeration, BAS and other applications
  • Faster Response Time: Once current flow is detected, it closes a set of contacts immidiately; Response Time: ≤200ms
  • Accurate & Dependable: Offers a sensing range of 1 to 50 amps and universal, solid-state outputs; Accuracy: 1%
  • Self-powered, no external power supply required
  • N.O. Universal Outputs: 2.5A @ 120 VAC/240VAC; In 240V circuit, only one 120V hot line is connected.
  • The switch has no limit on the number of opening and closing, and the reaction speed reaches the ms level.
  • High-power MOS tube contactless electronic switch.
  • LED indicator can conveniently and intuitively indicate the working status of the switch.
  • Action current 0.2-30A AC, adjustable with a potentiometer.
  • Self-powered, no external power supply required.

More Info

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

Search only Hilitand brand name
Current Sensing Switch, Normally Open Current Sensing Relay Adjustable AC 0.2A -30A (SZC23-NO-AL-CH Model)

Current price: 23.19 USD


Check price and availability


Height: 0.9842519675 Inches

Length: 2.5590551155 Inches

Width: 1.968503935 Inches

  • Ideal for use in HVAC Systems, Fans, Motors, Pumps, Refrigeration, BAS and other applications
  • Faster Response Time: Once current flow is detected, it closes a set of contacts immidiately; Response Time: ≤200ms
  • Accurate & Dependable: Offers a sensing range of 1 to 50 amps and universal, solid-state outputs; Accuracy: 1%
  • Self-powered, no external power supply required
  • N.O. Universal Outputs: 2.5A @ 120 VAC/240VAC; In 240V circuit, only one 120V hot line is connected.
  • The switch has no limit on the number of opening and closing, and the reaction speed reaches the ms level.
  • High-power MOS tube contactless electronic switch.
  • LED indicator can conveniently and intuitively indicate the working status of the switch.
  • Action current 0.2-30A AC, adjustable with a potentiometer.
  • Self-powered, no external power supply required.
  • ❤The switch has no limit on the number of opening and closing, and the reaction speed reaches the ms level.
  • ❤High-power MOS tube contactless electronic switch.
  • ❤LED indicator can conveniently and intuitively indicate the working status of the switch.
  • ❤Action current 0.2-30A AC, adjustable with a potentiometer.
  • ❤Self-powered, no external power supply required.

More Info

DPA51CM44 3-Phase Monitoring Relay, Current/Voltage Monitoring Relay Phase Sequence Protector for Three-Phase System, Without Neutral, Phase Loss and Incorrect Phase Sequence, 208-480VAC

Search only Walfront brand name
DPA51CM44 3-Phase Monitoring Relay, Current/Voltage Monitoring Relay Phase Sequence Protector for Three-Phase System, Without Neutral, Phase Loss and Incorrect Phase Sequence, 208-480VAC

Current price: 25.49 USD

Saving: $2.60 (9%)


Check price and availability


Weight: 0.1543235834 Pounds

  • Ideal for use in HVAC Systems, Fans, Motors, Pumps, Refrigeration, BAS and other applications
  • Faster Response Time: Once current flow is detected, it closes a set of contacts immidiately; Response Time: ≤200ms
  • Accurate & Dependable: Offers a sensing range of 1 to 50 amps and universal, solid-state outputs; Accuracy: 1%
  • Self-powered, no external power supply required
  • N.O. Universal Outputs: 2.5A @ 120 VAC/240VAC; In 240V circuit, only one 120V hot line is connected.
  • The switch has no limit on the number of opening and closing, and the reaction speed reaches the ms level.
  • High-power MOS tube contactless electronic switch.
  • LED indicator can conveniently and intuitively indicate the working status of the switch.
  • Action current 0.2-30A AC, adjustable with a potentiometer.
  • Self-powered, no external power supply required.
  • ❤The switch has no limit on the number of opening and closing, and the reaction speed reaches the ms level.
  • ❤High-power MOS tube contactless electronic switch.
  • ❤LED indicator can conveniently and intuitively indicate the working status of the switch.
  • ❤Action current 0.2-30A AC, adjustable with a potentiometer.
  • ❤Self-powered, no external power supply required.
  • LED Indication: This DPA51CM44 Monitoring Relay features an LED indication for easier installation and trouble shooting, which permits a maximum degree of protection to be achieved for machines, plants and systems, and avoid far more significant subsequent damage, very convenient and useful
  • 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
  • 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
  • Multi-functioanl: This DPA51CM44 3-Phase Monitoring Relay has a widely use on the electric filed, and it can be applied to motor protection, elevator, air conditioning system, power system and other industries, very helpful tool during daily life
  • 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

More Info

Current Sensing Switch, Normally Open Current Sensing Switch Adjustable AC 0.2-30A SZC23-NO-AL-CH

Search only Wal front brand name
Current Sensing Switch, Normally Open Current Sensing Switch Adjustable AC 0.2-30A SZC23-NO-AL-CH

Current price: 19.37 USD


Check price and availability


Height: 0.9842519675 Inches

Length: 2.5590551155 Inches

Width: 1.968503935 Inches

Weight: 0.12345886672 Pounds

  • Ideal for use in HVAC Systems, Fans, Motors, Pumps, Refrigeration, BAS and other applications
  • Faster Response Time: Once current flow is detected, it closes a set of contacts immidiately; Response Time: ≤200ms
  • Accurate & Dependable: Offers a sensing range of 1 to 50 amps and universal, solid-state outputs; Accuracy: 1%
  • Self-powered, no external power supply required
  • N.O. Universal Outputs: 2.5A @ 120 VAC/240VAC; In 240V circuit, only one 120V hot line is connected.
  • The switch has no limit on the number of opening and closing, and the reaction speed reaches the ms level.
  • High-power MOS tube contactless electronic switch.
  • LED indicator can conveniently and intuitively indicate the working status of the switch.
  • Action current 0.2-30A AC, adjustable with a potentiometer.
  • Self-powered, no external power supply required.
  • ❤The switch has no limit on the number of opening and closing, and the reaction speed reaches the ms level.
  • ❤High-power MOS tube contactless electronic switch.
  • ❤LED indicator can conveniently and intuitively indicate the working status of the switch.
  • ❤Action current 0.2-30A AC, adjustable with a potentiometer.
  • ❤Self-powered, no external power supply required.
  • LED Indication: This DPA51CM44 Monitoring Relay features an LED indication for easier installation and trouble shooting, which permits a maximum degree of protection to be achieved for machines, plants and systems, and avoid far more significant subsequent damage, very convenient and useful
  • 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
  • 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
  • Multi-functioanl: This DPA51CM44 3-Phase Monitoring Relay has a widely use on the electric filed, and it can be applied to motor protection, elevator, air conditioning system, power system and other industries, very helpful tool during daily life
  • 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
  • Suitable for AC current measurement and monitoring, AC motor overload protection, electronic switch of automatic control system and so on.
  • High-power MOS tube contactless electronic switch.Straight-through structure design, isolation withstand voltage up to 2000V.
  • The switch has no limit on the number of opening and closing, and the reaction speed reaches the ms level.The outer casing is made of self-extinguishing material ABS.
  • 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.
  • Self-powered, no external power supply required.Action current 0.2-30A AC, adjustable with a potentiometer.

More Info

Supco 90293 General Purpose Fan Relay, 1 A Load Current, 24 V Coil Voltage, Single Pole Double Throw Contacts

Search only Supco brand name
Supco 90293 General Purpose Fan Relay, 1 A Load Current, 24 V Coil Voltage, Single Pole Double Throw Contacts

Current price: 10.3 USD


Check price and availability


Height: 1.5 Inches

Length: 1.8 Inches

Width: 1.4 Inches

Weight: 0.01 Pounds

  • Ideal for use in HVAC Systems, Fans, Motors, Pumps, Refrigeration, BAS and other applications
  • Faster Response Time: Once current flow is detected, it closes a set of contacts immidiately; Response Time: ≤200ms
  • Accurate & Dependable: Offers a sensing range of 1 to 50 amps and universal, solid-state outputs; Accuracy: 1%
  • Self-powered, no external power supply required
  • N.O. Universal Outputs: 2.5A @ 120 VAC/240VAC; In 240V circuit, only one 120V hot line is connected.
  • The switch has no limit on the number of opening and closing, and the reaction speed reaches the ms level.
  • High-power MOS tube contactless electronic switch.
  • LED indicator can conveniently and intuitively indicate the working status of the switch.
  • Action current 0.2-30A AC, adjustable with a potentiometer.
  • Self-powered, no external power supply required.
  • ❤The switch has no limit on the number of opening and closing, and the reaction speed reaches the ms level.
  • ❤High-power MOS tube contactless electronic switch.
  • ❤LED indicator can conveniently and intuitively indicate the working status of the switch.
  • ❤Action current 0.2-30A AC, adjustable with a potentiometer.
  • ❤Self-powered, no external power supply required.
  • LED Indication: This DPA51CM44 Monitoring Relay features an LED indication for easier installation and trouble shooting, which permits a maximum degree of protection to be achieved for machines, plants and systems, and avoid far more significant subsequent damage, very convenient and useful
  • 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
  • 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
  • Multi-functioanl: This DPA51CM44 3-Phase Monitoring Relay has a widely use on the electric filed, and it can be applied to motor protection, elevator, air conditioning system, power system and other industries, very helpful tool during daily life
  • 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
  • Suitable for AC current measurement and monitoring, AC motor overload protection, electronic switch of automatic control system and so on.
  • High-power MOS tube contactless electronic switch.Straight-through structure design, isolation withstand voltage up to 2000V.
  • The switch has no limit on the number of opening and closing, and the reaction speed reaches the ms level.The outer casing is made of self-extinguishing material ABS.
  • 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.
  • Self-powered, no external power supply required.Action current 0.2-30A AC, adjustable with a potentiometer.
  • Sealed enclosure
  • SPST-NO, SPST-NC, SPDT 1 NO/1 NC contact forms
  • Controls signals for a fan
  • Electric relay for receiving and controlling electric signals

More Info

YWBL-WH Voltage Monitoring Relay DC 12V/24V/36V/48V Over-Voltage and Under-Voltage Protection Relay 35MM Guide Rail 13-17V 10-14V(DC12V)

Search only YWBL-WH brand name
YWBL-WH Voltage Monitoring Relay DC 12V/24V/36V/48V Over-Voltage and Under-Voltage Protection Relay 35MM Guide Rail 13-17V 10-14V(DC12V)

Current price: 29.99 USD


Check price and availability


  • Ideal for use in HVAC Systems, Fans, Motors, Pumps, Refrigeration, BAS and other applications
  • Faster Response Time: Once current flow is detected, it closes a set of contacts immidiately; Response Time: ≤200ms
  • Accurate & Dependable: Offers a sensing range of 1 to 50 amps and universal, solid-state outputs; Accuracy: 1%
  • Self-powered, no external power supply required
  • N.O. Universal Outputs: 2.5A @ 120 VAC/240VAC; In 240V circuit, only one 120V hot line is connected.
  • The switch has no limit on the number of opening and closing, and the reaction speed reaches the ms level.
  • High-power MOS tube contactless electronic switch.
  • LED indicator can conveniently and intuitively indicate the working status of the switch.
  • Action current 0.2-30A AC, adjustable with a potentiometer.
  • Self-powered, no external power supply required.
  • ❤The switch has no limit on the number of opening and closing, and the reaction speed reaches the ms level.
  • ❤High-power MOS tube contactless electronic switch.
  • ❤LED indicator can conveniently and intuitively indicate the working status of the switch.
  • ❤Action current 0.2-30A AC, adjustable with a potentiometer.
  • ❤Self-powered, no external power supply required.
  • LED Indication: This DPA51CM44 Monitoring Relay features an LED indication for easier installation and trouble shooting, which permits a maximum degree of protection to be achieved for machines, plants and systems, and avoid far more significant subsequent damage, very convenient and useful
  • 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
  • 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
  • Multi-functioanl: This DPA51CM44 3-Phase Monitoring Relay has a widely use on the electric filed, and it can be applied to motor protection, elevator, air conditioning system, power system and other industries, very helpful tool during daily life
  • 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
  • Suitable for AC current measurement and monitoring, AC motor overload protection, electronic switch of automatic control system and so on.
  • High-power MOS tube contactless electronic switch.Straight-through structure design, isolation withstand voltage up to 2000V.
  • The switch has no limit on the number of opening and closing, and the reaction speed reaches the ms level.The outer casing is made of self-extinguishing material ABS.
  • 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.
  • Self-powered, no external power supply required.Action current 0.2-30A AC, adjustable with a potentiometer.
  • Sealed enclosure
  • SPST-NO, SPST-NC, SPDT 1 NO/1 NC contact forms
  • Controls signals for a fan
  • Electric relay for receiving and controlling electric signals
  • ✈ TYPICAL APPLICATIONS---The voltage monitoring relay is typically applied in dc motor, battery,UPS power supply, dc switchgear, dc panel, industrial control system
  • ✈ 35MM GUIDE RAIL---With 35mm guide 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
  • ✈ 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
  • ✈ PRODUCT NAME---Voltage Monitoring Relay; Protection function: over voltage, under voltage; Rated voltage: DC 12V/24V/36V/48V; Overvoltage regulation range: 13-17v; Undervoltage adjustment range: 10-14v; Contact capacity: 6A 250VAC (resistivity)

More Info

Veris Industries H-735 Current Switch Command Relay, 50/60 Hz

Search only Veris Industries brand name
Veris Industries H-735 Current Switch Command Relay, 50/60 Hz

Current price: 44.61 USD


Check price and availability


Weight: 0.3 Pounds

  • Ideal for use in HVAC Systems, Fans, Motors, Pumps, Refrigeration, BAS and other applications
  • Faster Response Time: Once current flow is detected, it closes a set of contacts immidiately; Response Time: ≤200ms
  • Accurate & Dependable: Offers a sensing range of 1 to 50 amps and universal, solid-state outputs; Accuracy: 1%
  • Self-powered, no external power supply required
  • N.O. Universal Outputs: 2.5A @ 120 VAC/240VAC; In 240V circuit, only one 120V hot line is connected.
  • The switch has no limit on the number of opening and closing, and the reaction speed reaches the ms level.
  • High-power MOS tube contactless electronic switch.
  • LED indicator can conveniently and intuitively indicate the working status of the switch.
  • Action current 0.2-30A AC, adjustable with a potentiometer.
  • Self-powered, no external power supply required.
  • ❤The switch has no limit on the number of opening and closing, and the reaction speed reaches the ms level.
  • ❤High-power MOS tube contactless electronic switch.
  • ❤LED indicator can conveniently and intuitively indicate the working status of the switch.
  • ❤Action current 0.2-30A AC, adjustable with a potentiometer.
  • ❤Self-powered, no external power supply required.
  • LED Indication: This DPA51CM44 Monitoring Relay features an LED indication for easier installation and trouble shooting, which permits a maximum degree of protection to be achieved for machines, plants and systems, and avoid far more significant subsequent damage, very convenient and useful
  • 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
  • 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
  • Multi-functioanl: This DPA51CM44 3-Phase Monitoring Relay has a widely use on the electric filed, and it can be applied to motor protection, elevator, air conditioning system, power system and other industries, very helpful tool during daily life
  • 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
  • Suitable for AC current measurement and monitoring, AC motor overload protection, electronic switch of automatic control system and so on.
  • High-power MOS tube contactless electronic switch.Straight-through structure design, isolation withstand voltage up to 2000V.
  • The switch has no limit on the number of opening and closing, and the reaction speed reaches the ms level.The outer casing is made of self-extinguishing material ABS.
  • 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.
  • Self-powered, no external power supply required.Action current 0.2-30A AC, adjustable with a potentiometer.
  • Sealed enclosure
  • SPST-NO, SPST-NC, SPDT 1 NO/1 NC contact forms
  • Controls signals for a fan
  • Electric relay for receiving and controlling electric signals
  • ✈ TYPICAL APPLICATIONS---The voltage monitoring relay is typically applied in dc motor, battery,UPS power supply, dc switchgear, dc panel, industrial control system
  • ✈ 35MM GUIDE RAIL---With 35mm guide 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
  • ✈ 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
  • ✈ PRODUCT NAME---Voltage Monitoring Relay; Protection function: over voltage, under voltage; Rated voltage: DC 12V/24V/36V/48V; Overvoltage regulation range: 13-17v; Undervoltage adjustment range: 10-14v; Contact capacity: 6A 250VAC (resistivity)
  • Detect belt loss and motor failure..ideal for fan and pump status
  • Reduces number of components installed – fits better in small starter enclosures
  • Starting/stopping and monitoring positive status of motors

More Info

Supco APR5 Wire to Wire Adjustable Potential Relay, 30 A Load Current, 110 - 270 VAC Single Phase Operating Voltage

Search only Supco brand name
Supco APR5 Wire to Wire Adjustable Potential Relay, 30 A Load Current, 110 - 270 VAC Single Phase Operating Voltage

Current price: 22.67 USD

Saving: $1.55 (6%)


Check price and availability


  • Ideal for use in HVAC Systems, Fans, Motors, Pumps, Refrigeration, BAS and other applications
  • Faster Response Time: Once current flow is detected, it closes a set of contacts immidiately; Response Time: ≤200ms
  • Accurate & Dependable: Offers a sensing range of 1 to 50 amps and universal, solid-state outputs; Accuracy: 1%
  • Self-powered, no external power supply required
  • N.O. Universal Outputs: 2.5A @ 120 VAC/240VAC; In 240V circuit, only one 120V hot line is connected.
  • The switch has no limit on the number of opening and closing, and the reaction speed reaches the ms level.
  • High-power MOS tube contactless electronic switch.
  • LED indicator can conveniently and intuitively indicate the working status of the switch.
  • Action current 0.2-30A AC, adjustable with a potentiometer.
  • Self-powered, no external power supply required.
  • ❤The switch has no limit on the number of opening and closing, and the reaction speed reaches the ms level.
  • ❤High-power MOS tube contactless electronic switch.
  • ❤LED indicator can conveniently and intuitively indicate the working status of the switch.
  • ❤Action current 0.2-30A AC, adjustable with a potentiometer.
  • ❤Self-powered, no external power supply required.
  • LED Indication: This DPA51CM44 Monitoring Relay features an LED indication for easier installation and trouble shooting, which permits a maximum degree of protection to be achieved for machines, plants and systems, and avoid far more significant subsequent damage, very convenient and useful
  • 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
  • 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
  • Multi-functioanl: This DPA51CM44 3-Phase Monitoring Relay has a widely use on the electric filed, and it can be applied to motor protection, elevator, air conditioning system, power system and other industries, very helpful tool during daily life
  • 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
  • Suitable for AC current measurement and monitoring, AC motor overload protection, electronic switch of automatic control system and so on.
  • High-power MOS tube contactless electronic switch.Straight-through structure design, isolation withstand voltage up to 2000V.
  • The switch has no limit on the number of opening and closing, and the reaction speed reaches the ms level.The outer casing is made of self-extinguishing material ABS.
  • 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.
  • Self-powered, no external power supply required.Action current 0.2-30A AC, adjustable with a potentiometer.
  • Sealed enclosure
  • SPST-NO, SPST-NC, SPDT 1 NO/1 NC contact forms
  • Controls signals for a fan
  • Electric relay for receiving and controlling electric signals
  • ✈ TYPICAL APPLICATIONS---The voltage monitoring relay is typically applied in dc motor, battery,UPS power supply, dc switchgear, dc panel, industrial control system
  • ✈ 35MM GUIDE RAIL---With 35mm guide 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
  • ✈ 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
  • ✈ PRODUCT NAME---Voltage Monitoring Relay; Protection function: over voltage, under voltage; Rated voltage: DC 12V/24V/36V/48V; Overvoltage regulation range: 13-17v; Undervoltage adjustment range: 10-14v; Contact capacity: 6A 250VAC (resistivity)
  • Detect belt loss and motor failure..ideal for fan and pump status
  • Reduces number of components installed – fits better in small starter enclosures
  • Starting/stopping and monitoring positive status of motors
  • Replaces 3- and 5-terminal potential relays
  • Universal, non-positional mounting and adapters for screw or push-on terminals
  • Safety time-out of 1 to 1.5 sec
  • Set pick up voltage
  • Adjustable potential relay for HVAC/R

More Info

Power Supply Monitor Relay, 3 Phase Circuit Protection Voltage Monitoring Relay Phase Failure Sequence Protector for Motors Pumps

Search only Nannday brand name
Power Supply Monitor Relay, 3 Phase Circuit Protection Voltage Monitoring Relay Phase Failure Sequence Protector for Motors Pumps

Current price: 22.99 USD

Saving: $2.00 (8%)


Check price and availability


Weight: 0.2645547144 Pounds

  • Ideal for use in HVAC Systems, Fans, Motors, Pumps, Refrigeration, BAS and other applications
  • Faster Response Time: Once current flow is detected, it closes a set of contacts immidiately; Response Time: ≤200ms
  • Accurate & Dependable: Offers a sensing range of 1 to 50 amps and universal, solid-state outputs; Accuracy: 1%
  • Self-powered, no external power supply required
  • N.O. Universal Outputs: 2.5A @ 120 VAC/240VAC; In 240V circuit, only one 120V hot line is connected.
  • The switch has no limit on the number of opening and closing, and the reaction speed reaches the ms level.
  • High-power MOS tube contactless electronic switch.
  • LED indicator can conveniently and intuitively indicate the working status of the switch.
  • Action current 0.2-30A AC, adjustable with a potentiometer.
  • Self-powered, no external power supply required.
  • ❤The switch has no limit on the number of opening and closing, and the reaction speed reaches the ms level.
  • ❤High-power MOS tube contactless electronic switch.
  • ❤LED indicator can conveniently and intuitively indicate the working status of the switch.
  • ❤Action current 0.2-30A AC, adjustable with a potentiometer.
  • ❤Self-powered, no external power supply required.
  • LED Indication: This DPA51CM44 Monitoring Relay features an LED indication for easier installation and trouble shooting, which permits a maximum degree of protection to be achieved for machines, plants and systems, and avoid far more significant subsequent damage, very convenient and useful
  • 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
  • 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
  • Multi-functioanl: This DPA51CM44 3-Phase Monitoring Relay has a widely use on the electric filed, and it can be applied to motor protection, elevator, air conditioning system, power system and other industries, very helpful tool during daily life
  • 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
  • Suitable for AC current measurement and monitoring, AC motor overload protection, electronic switch of automatic control system and so on.
  • High-power MOS tube contactless electronic switch.Straight-through structure design, isolation withstand voltage up to 2000V.
  • The switch has no limit on the number of opening and closing, and the reaction speed reaches the ms level.The outer casing is made of self-extinguishing material ABS.
  • 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.
  • Self-powered, no external power supply required.Action current 0.2-30A AC, adjustable with a potentiometer.
  • Sealed enclosure
  • SPST-NO, SPST-NC, SPDT 1 NO/1 NC contact forms
  • Controls signals for a fan
  • Electric relay for receiving and controlling electric signals
  • ✈ TYPICAL APPLICATIONS---The voltage monitoring relay is typically applied in dc motor, battery,UPS power supply, dc switchgear, dc panel, industrial control system
  • ✈ 35MM GUIDE RAIL---With 35mm guide 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
  • ✈ 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
  • ✈ PRODUCT NAME---Voltage Monitoring Relay; Protection function: over voltage, under voltage; Rated voltage: DC 12V/24V/36V/48V; Overvoltage regulation range: 13-17v; Undervoltage adjustment range: 10-14v; Contact capacity: 6A 250VAC (resistivity)
  • Detect belt loss and motor failure..ideal for fan and pump status
  • Reduces number of components installed – fits better in small starter enclosures
  • Starting/stopping and monitoring positive status of motors
  • Replaces 3- and 5-terminal potential relays
  • Universal, non-positional mounting and adapters for screw or push-on terminals
  • Safety time-out of 1 to 1.5 sec
  • Set pick up voltage
  • Adjustable potential relay for HVAC/R
  • ✔【IDEAL FOR】Widely used in air compressors, electric motors, distribution boxes, water pumps, oil pumps, central air conditioning units, etc
  • ✔【VOLTAGE IMBALANCE PROTECTION】Voltage imbalance protection, which refers to a protective measure that will affect the safe operation of the line due to three-phase voltage imbalance
  • ✔【REVERSE PHASE PROTECTION】Reverse phase protection, a protection measure to prevent L1, L2, L3 three-phase AC phase sequence from being connected incorrectly, delay 2S action
  • ✔【PHASE LOSS PROTECTION】Phase loss protection means that when the protected line is in the running state or non-operating state, any phase failure occurs, and the delay is 2S
  • ✔【3 INDICATORS】The protector base adopts 35mm rail type or device type, and has two screw hole structures inside, which can be directly installed separately or HT35 rail. Indicated by three indicators: normal, phase loss(voltage three-phase unbalance), reverse phase

More Info

1    2    3    4    5    6    7    8    9    10