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Best Voltage Monitoring Relays - Buying Guide

Last Updated: 09/15/2019

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Bestselling Voltage Monitoring Relays on Amazon

  1. Icstation 3V 1 Channel Relay Power Switch Module with Optocoupler Opto Isolation High Level Trigger ...
  2. WHDTS WiFi Momentary Inching & Self-Locking Relay Delay Switch Module Low Power Smart Home Remote Co...
  3. Eagles 5pcs 1 Channel 3V Relay Module with Optocoupler for ESP8266 Module 3v Logic Level Boards Rasp...
  4. Onyehn 1 Channel DC 3V Relay High Level Driver Module Optocoupler Relay Module Isolated Drive Contro...
  5. SymCom MotorSaver 3-Phase Voltage Monitor Model 201A, 190-480V, 8-Pin Octal Base
  6. SymCom 102A Motor Saver 3-Phase Monitor Relay 190-480VAC
  7. Time Mark Corporation A258B Relay; SSR; Phase Monitor; SPDT; Cur-Rtg 10A; Ctrl-V 480AC; Vol-Rtg 240A...
  8. 3 Phase Voltage Monitoring Sequence Relay JVR800-2 Voltage Protection Relay Under Over Voltage Protector
  9. WHDTS 4 Channel WiFi Momentary Inching/Self-Locking/Interlocking Relay Delay Switch Module Smart Hom...
  10. SymCom MotorSaver 3-Phase Voltage Monitor, Model 460-L, 190-480V, Fixed Unbalance and Trip Delay, DI...

  #1

Icstation 3V 1 Channel Relay Power Switch Module with Optocoupler Opto Isolation High Level Trigger for IOT ESP8266 Development Board (Pack of 5)

Model: 3V 1 channel Relay Module   |    Mpn: 356705   |    PartNumber: 356705   |   Asin: B01M0E6SQM


Specifications:
Relay Module: SRD-DC03V-SL-C
Channel: 1 channel
Working Voltage: DC 3-3.3V
Compatible Load: 10A 250VAC / 10A 30VDC
Single Socket Length:7.5mm
Response Time:

Features

  • Optocoupler Isolator 3V/3.3V power relay module supports photocoupler isolation control.
  • High Level Trigger The relay module is triggered by high level signal, which can be input from microcontroller IO.
  • Jumper Caps You are free to select whether the relay and the signal share the same power supply or not by removing the jumper caps on the pins or not. It is recommended to share the same power supply, because that is more convenient for using.
  • 30VDC 250VAC Load The power switch is compatible with 10A 250VAC and 10A 30VDC load.
  • Long Life Fast response time less than 20ms and long life time up to 100,000 times snap action with diode freewheel protection. Please feel free to contact seller if you have any question. icstation@hotmail.com
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Brand: IS   |   Manufacturer: Icstation

Item Dimensions: 0.79 x 0.7 x 2.76 inches (2.0 x 1.8 x 7.0 cm)   |   Package Dimensions: 1.18 x 5 x 7.01 inches (3.0 x 12.7 x 17.8 cm)

Amazon Price: $13.99 | as of 09/15/2019(9:42am pst)
Availibility: Usually ships in 24 hours
List Price: $18.99

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  #2

WHDTS WiFi Momentary Inching & Self-Locking Relay Delay Switch Module Low Power Smart Home Remote Control DC 12V Compatible with iOS Andriod 2G/3G/4G Network

 Ean: 0615135207387   |    PartNumber: 43237-2   |   Asin: B071GCDGQB

Wanna Control Your Home Thousands of Miles Away? Wanna Control Your Appliances With Only One Cellphone? This WiFi Relay Switch Module Born for It. It is designed to provide you with a seamless control over your home equipment. It supports Both Self-locking Relay Mode And Inching Relay Mode. Self-locking Relay: It latches like a toggle switch. Press the button on "eWeLink" APP, relay switch module will keep on. Press the button again, relay switch module will be off. Inching Relay: It's Momentary like a pushbutton switch. Press the button on "eWeLink" APP, relay switch module will keep on for 0.5s and then off automatically. Note: The relay switch module can switch between these two modes (method as shown in User Manual). Features: 1.Remote Control Added Devices Through APP 2.Status Tracking. Home appliances' status will be fed back into your APP timely. 3.Supports Scheduled Timing Countdown Timer Loop Timing Grouping Function Smart Scene Share Control Numerous WIFI Switches W/ One Account. Using Steps: Power ON the Module Device, Download eWeLink APP (requires 2.4 GHz wifi signal for device), Connect the APP to Same WIFI that Connected Module, Add Devices (hold down pairing button for >6 seconds, release, flashing light = pairing mode), Setup Work Mode, Done. For Specific Instruction & Operation Steps, please download User Manual on the Product Page Named "Technical Specification" Section (Due To Character Limit). Parameters: Work Voltage&Current: DC12V; 250mA Load Voltage&Current: AC0-250V or DC0~30V; 10A/Channel(MAX) Output Type: Mechanical switch output(Cannot Output Voltage!) Control Mode: WIFI/2G/3G/4G; WIFI standard: 2.4GHz Work Modes: Self-locking Mode (Default) & Inching mode After-sale Service: Any issues, please feel free to Contact Us for help.

Features

  • MULTI-FUNCTION MODE : Smart remote control functions with Momentary Timing control, Cyclic Timing control, Delay Switch Control and Mechanical Switch Output meet your daily needs.
  • SUPER COMPATIBILITY : Work with IOS and Android 2/3/4G network. You can control the devices with your phone easily.
  • FLEXIBILITY OF OPERATION : This WIFI Inching /Self-locking Relay has a built-in antenna. Different wiring methods correspond to different equipment operation requirements.
  • ONE APP IN MOBILE PHONE : To make the switch work, just need to download the eWeLink APP from Google Play or Apple Store. And then set up the APP (refer to the User Manual for detailed steps) and connect the switch module to all your devices easily. And the APP eWeLink is also compatible for Amazon Alexa, Google Assistant and Google Nest. Please enjoy to control all your household appliances with your mobile phone wherever you are.
  • Perfect After-Sale Service : In addition to providing quality products, fast logistics and perfect after-sale service, we can assist you in the installation. This wifi relay module's installing requires basic electronic knowledge. Any Issues? Don't Rush to Throw Out A Negative Feedback Out of Anger And Impulse, Contact Us to Solve Your Problem. Communication Makes Problems Gone!
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Brand: WHDTS   |   Manufacturer: WHDTS

Package Dimensions: 0.71 x 4.8 x 6.5 inches (1.8 x 12.2 x 16.5 cm)

Amazon Price: $13.99 | as of 09/15/2019(9:42am pst)
Availibility: Usually ships in 24 hours
List Price: $29.99

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  #3

Eagles 5pcs 1 Channel 3V Relay Module with Optocoupler for ESP8266 Module 3v Logic Level Boards Raspberry Pi 3.3v Application

 Ean: 0782321857845   |    PartNumber: Relay-5   |   Asin: B07GBS62GX

Discription:
1. Voltage: DC 3v/3.3v
2. Size: 2.7"/70mm X 0.66"/17mm X 0.79"/20mm
3. Main components: EL817, Srd-dc03v-sl-c
4. Can control 10A 250VAC, 10A 30VDC load

Feature
1. The relay module has the output signal indicator light indication;
2. The signal input port can connect SCM IO port, high level signal drive;
3. Dual power supply design with anti-interference ability and high reliability of photoelectric isolation protection ;
4. With diode continuous flow protection;
5. Response time is less than 20 milliseconds;
6. Long life of relay can be absorbed 100,000 times continuously;
7. The external connection uses the Rotary crimping terminal, causes the wiring to be more solid;
8. With fixed installation hole, easy to install. Provide circuit diagram and detailed instructions for use.

Package include:
5 x 1 Channel Relay Module with Optocoupler

Features

  • 1. 3V 1-Channel Relay interface board support photocoupler isolation control,has the output signal indicator,the signal input port can connect SCM IO port, high level signal drive
  • 2. Support dual power supply input ensure high anti-interference ability,high reliability of photoelectric isolation protection
  • 3. With diode continuous flow protection,response time is less than 20 milliseconds,long life of relay can be absorbed 100,000 times continuously
  • 4. The external connection uses the rotary crimping terminal, causes the wiring to be more solid.
  • 5. Equiped with high-current relay, AC250V 10A ; DC30V 10A,each relay has normally open and normally closed contact. Can be selected by jumper relay and TTL or ground.
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Brand: Eagles   |   Manufacturer: Eagles

Package Dimensions: 1.3 x 3.7 x 5.4 inches (3.3 x 9.4 x 13.7 cm)

Amazon Price: $16.99 | as of 09/15/2019(9:42am pst)
Availibility: Usually ships in 24 hours
List Price: $16.99

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  #4

Onyehn 1 Channel DC 3V Relay High Level Driver Module Optocoupler Relay Module Isolated Drive Control Board for Arduino (Pack of 5)

 Ean: 8431246151102   |   Asin: B07PNB86R7

- Size: 70mm X17mm X20mm (LxWxH)
- Main chip: EL817, SRD-DC03V-SL-C
- Work voltage: DC 3V/3.3V
- Control 10A 250VAC, 10A 30VDC load

Features
- Instructions with the signal output
- Signal input port can connect microcontroller IO port, high level signal
- Double power selection design anti-interference ability is strong, photoelectric isolation protection of high reliability
- Current wide detection range:DC0-25V input
- A diode current protection
- Response time is less than 20 milliseconds
- Relay long life can absorb 100000 times continuously
- External connection use spinning crimping terminal, make connection firmer
- With fixed installation hole, convenient installation

Package include
5 X 1 Channel 3V Relay Module

Features

  • 1 channel 3V/3.3V power relay mdoule support photocoupler isolation control;Support dual power supply input ensure high anti-iinterference ability
  • Fast response time less than 20ms and longlife time up to 100,000 times snap action
  • On-board signal output indicator, wire terminal and installing holescompatible with 10A 250VAC and 10A 30VDC load
  • Module Size: 70mmX17mmX20mm / 2.76X0.70X0.79 inch (L*W*H)
  • Relay Module: SRD-DC03V-SL-C;Channel: 1 channel;Working Voltage: DC 3-3.3V;Compatible Load: 10A 250VAC / 10A 30VDC;Single Socket Length: 7.5mm
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Brand: Onyehn   |   Manufacturer: Onyehn

Package Dimensions: 0.9 x 3.9 x 6.5 inches (2.3 x 9.9 x 16.5 cm)

Amazon Price: $14.99 | as of 09/15/2019(9:42am pst)
Availibility: Usually ships in 24 hours
List Price: $14.99

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  #5

SymCom MotorSaver 3-Phase Voltage Monitor Model 201A, 190-480V, 8-Pin Octal Base

Model: 201A   |    Mpn: CRESCENT ENTERPRISES-62   |    Ean: 0696505439607   |    PartNumber: CRESCENT ENTERPRISES-62   |   Asin: B0176L8HBE

Littelfuse #201A - 3-PHASE PLUG-IN VOLTAGE MONITO

Features

Brand: Symcom   |   Manufacturer: Littelfuse

Item Dimensions: 1.75 x 2.37 x 4.13 inches (4.4 x 6.0 x 10.5 cm)   |   Package Dimensions: 3.4 x 3.5 x 5.8 inches (8.6 x 8.9 x 14.7 cm)

Amazon Price: $65.00 | as of 09/15/2019(9:42am pst)
Availibility: Usually ships in 24 hours
List Price: $75.00

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  #6

SymCom 102A Motor Saver 3-Phase Monitor Relay 190-480VAC

Model: 102A   |    Mpn: 102A   |    PartNumber: 102A   |   Asin: B00RW7LYC2

SymCom MotorSaver Model 102A is an auto-ranging voltage monitor designed to protect 3-phase motors regardless of size. It is used on 190-480 VAC, 50 to 60 Hz motors to prevent damage caused by single phasing, low voltage, phase reversal, or voltage unbalance. This unique microcontroller-based voltage and phase-sensing circuit constantly monitors the three-phase voltages to detect harmful power line conditions. When a harmful condition is detected, the MotorSaver's output relay is deactivated after a specified trip delay. The output relay reactivates after power line conditions return to an acceptable level for a specified amount of time (Restart Delay). The trip delay prevents nuisance tripping due to rapidly fluctuating power line conditions.

Features

  • Protects Motors from loss of any phase (single-phasing), low voltage, voltage unbalance and phase reversal.
  • Surface Mount with, Optional DIN Rail Mount, Compact design, Finger-safe Barrier Strip Cover
  • Microcontroller-based circuitry provides better accuracy and higher reliability. Transient protection meets IEEE 587 and IEC standards and permits operation under tough conditions.
  • Universal range from 190-480 VAC, 50/60 Hz, provides the versatility needed to handle global applications.
  • UL and cUL listed, 5-year warranty, Assembled in USA
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Brand: Symcom   |   Manufacturer: Littelfuse

Item Dimensions: 23 x 23 x 31 inches (58.4 x 58.4 x 78.7 cm)   |   Package Dimensions: 4.9 x 4.9 x 7.1 inches (12.4 x 12.4 x 18.0 cm)

Amazon Price: $128.00 | as of 09/15/2019(9:42am pst)
Availibility: Usually ships in 24 hours
List Price: $133.25

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  #7

3 Phase Voltage Monitoring Sequence Relay JVR800-2 Voltage Protection Relay Under Over Voltage Protector

 Ean: 0747333418897   |    PartNumber: YWBL-WH6ewt8gi2yq   |   Asin: B07Q5Z1CGM

Specification:
Model: JVR 800-2
Monitoring Circuit: L1, L2, L3
Rated voltage: 208-480V AC, 50/60Hz
Protection: over-voltage, under-voltage, voltage unbalance, phase loss, phase sequence, counter
Overvoltage setting range: 200-600V
Undervoltage setting range: 150-500V
Voltage hysteresis: 1-20V
Delay time for overvoltage and undervoltage: 0.1-30s
Voltage unbalance ratio: 1-50%
Voltage unbalance hysteresis: 1-10%
Voltage unbalance delay time: 0.1-30s
Delay time for phase loss: 0.1-30s
Delay time for phase sequence: 0.1-30s
Start delay time: 0-999s
Auto reset mode: ON/OFF
Auto reset time: 0.1-999s
Timer and counter input: AC/DC 80-450V
Indicators: LCD indicating voltage,current,operation status
Output contacts: 1 C/O,1NC
Contact capacity: 6A ,250VAC
Dimensions (H W D): 80 43 54mm/3.15 1.69 2.12inch
Mounting: suitable for 35mm rail
Weight: 129g

Package List:
1 3 Phase Voltage Monitoring Relay

Features

  • The Composition of This Product: Three-phase voltage protector, chronograph and counter are integrated in one relay.
  • Function: This voltage protection relay has overvoltage, undervoltage, phase loss, phase sequence and unbalanced three-phase voltage protection.
  • Practicality: This 3-phase voltage relay does not require an external power supply. Has practical functions: power delay, output test, etc
  • 2 rest modules are optional, manual and automatic.
  • The LCD can display data for easy reading.
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Brand: YWBL-WH   |   Manufacturer: YWBL-WH

Package Dimensions: 1.9 x 2.5 x 3.4 inches (4.8 x 6.4 x 8.6 cm)

Amazon Price: $35.39 | as of 09/15/2019(9:42am pst)
Availibility: Usually ships in 24 hours
List Price: $35.39

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  #8

WHDTS 4 Channel WiFi Momentary Inching/Self-Locking/Interlocking Relay Delay Switch Module Smart Home Remote Control AC 220V Compatible with Alexa Google Assistant iOS Andriod 2G/3G/4G Network

 Ean: 6165438537505   |   Asin: B07HKBRG6V

This WIFI module based on 4 channel (4-way) WIFI wireless switch. It integrates with MCU and button control. It supports to connect and control 4 home appliances, which can be separately turned on/off by app eWeLink and buttons on module. Users can switch among 3 modes: self-locking mode, inching mode and interlock mode. How to Change Work Mode? The default is self-lock mode. The LED corresponding to the work mode will turn ON when press button 'Mode'. M1:Red LED indicator. Self-locking mode; M2:Blue LED indicator. Inching mode; M3:Green LED indicator. Interlocking mode. Self-locking Mode: Control each output separately. 4-Channel output relay work independently of each other. For example: if users turn on CH1, connected device keeps on. If users turn off CH2, connected device keeps off. press button CH1, CH1 relay will keep on; Press again, CH1 relay OFF. Inching Mode: Control each output separately. 4-Channel output relay work independently of each other. Users can turn on the connected devices for 1s. Interlocking Mode: The 4 outputs are related to each other, only one output can work at a time. Users can turn on 1 device every time, and turn off other devices at the same time. More details: images-na. ssl-images-amazon. com/images/I/91uIjaEt7lL. pdf Drivers for mac osx: macappstore. org/silicon-labs-vcp-driver/ Parameters: Working voltage: AC 85~250V Load voltage: AC 85-250V Load current:10A/channel(max) WIFI standard:2. 4GHz b/g/n Operating Temperature:-20 ~70 Operating Humidity:5%-90%RH

Features

  • 4 CHANNEL: 4 channel smart remote control module which you can control your 4 home appliances independently.
  • 3 WORK MODES (Inching/Self-locking/Interlocking): M1 for Self-locking, M2 for Inching and M3 for Interlocking.
  • 3 REMOTE CONTROL METHODS: you can control the connected appliances via free phone application eWelink or manually with buttons on the module.
  • POWER SOURCE: Input AC voltage(85V to 250V) powers the module. It is independently swithched on 4 output channels
  • The eWelink application supports Amazon Alexa, Google Assistant and Google Nest
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Brand: WHDTS   |   Manufacturer: WHDTS

Package Dimensions: 1.69 x 3.78 x 4.8 inches (4.3 x 9.6 x 12.2 cm)

Amazon Price: $24.99 | as of 09/15/2019(9:42am pst)
Availibility: Usually ships in 24 hours
List Price: $39.99

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  #9

SymCom MotorSaver 3-Phase Voltage Monitor, Model 460-L, 190-480V, Fixed Unbalance and Trip Delay, DIN Rail Mount

Model: 460-L   |    Mpn: 460-L   |    PartNumber: 460-L   |   Asin: B0176L88YK

Littelfuse #460-L - 3-PHASE VOLT MON/ 190-480V/ AD

Features

Brand: Symcom   |   Manufacturer: Littelfuse

Item Dimensions: 3.5 x 2.08 x 2.35 inches (8.9 x 5.3 x 6.0 cm)   |   Package Dimensions: 2.5 x 2.5 x 4.2 inches (6.4 x 6.4 x 10.7 cm)

Amazon Price: $86.79 | as of 09/15/2019(9:42am pst)
Availibility: Usually ships in 4-5 business days
List Price: $86.79

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  #10

DiversiTech DTP-3 Digital 3-Phase Motor Protector

Model: DTP-3   |    Mpn: DTP-3   |    Ean: 0686109880059   |    PartNumber: DTP-3   |   Asin: B008HQ3IT4

The product is Monitor, Dig, Three Ph.Mtr.Pro. This product is easy to install. The product is highly durable. Manufactured in China.

Features

Brand: Diversitech   |   Manufacturer: DiversiTech

Package Dimensions: 1.2 x 7.2 x 7.3 inches (3.0 x 18.3 x 18.5 cm)

Amazon Price: $131.95 | as of 09/15/2019(9:42am pst)
Availibility: Usually ships in 24 hours
List Price: $131.95

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  #11

Functional Devices RIBU2C Enclosed Pilot Relay, 10 Amp 2 Spdt with 10-30 Vac/Dc/120 Vac Coil

Model: RIBU2C   |    Mpn: RIBU2C   |    Ean: 0616913184128   |    PartNumber: RIBU2C   |   Asin: B0078RYY00

10 amp 2 SPDT, 10-30 VAC/DC/120 VAC coil, sold as each, Functional Devices RIBU2C enclosed pilot relay, 10 amp 2 SPDT with 10-30 VAC/DC/120 VAC coil. Made in United States. Manufactured by Functional Devices, Inc.

Features

Brand: Functional Devices   |   Manufacturer: Functional Devices, Inc

Item Dimensions: 1.8 x 3.8 x 2.5 inches (4.6 x 9.7 x 6.4 cm)   |   Package Dimensions: 2.5 x 4.4 x 6.5 inches (6.4 x 11.2 x 16.5 cm)

First Available: 2017-06-13

Amazon Price: $19.12 | as of 09/15/2019(9:42am pst)
Availibility: Usually ships in 1-2 business days
List Price: $19.12

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  #12

Hubbell Wiring Systems HBL2315SW Twist-Lock Watertight Safety Shroud Flanged Inlet, 20 amp, 125VAC, 2-Pole, 3-Wire Grounding, L5-20P, Gray

Model: 194621   |    Mpn: HBL2315SW   |    Ean: 0783585231068   |    PartNumber: HBL2315SW   |   Asin: B00DJUJ0AE

Hubbell watertight safety shroud flanged inlet. High impact, thermoplastic housing for heavy-duty industrial environments. Catalog number and color-coded voltage rating are easily visible when in use. Stainless Steel 302/304, #10 multiple drive head mounting screws provide corrosion resistance. Mounting screw recesses minimize screwdriver slippage. Lockout/tag out hole on inlets allow compliance to OSHA regulation 29 CFR 1910.147. Neoprene closure cap provided with inlets for environmental seal when not in use. Accepts all mating NEMA locking plugs and most connector bodies, allowing interchangeability with existing devices. 20-ampere current rating.

Features

  • High impact, thermoplastic housing for heavy-duty industrial environments
  • Stainless Steel 302/304, #10 multiple drive head mounting screws provide corrosion resistance
  • Mounting screw recesses minimize screwdriver slippage
  • Lockout/tag out hole on inlets allow compliance to OSHA regulation 29 CFR 1910.147
  • Neoprene closure cap provided with inlets for environmental seal when not in use
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Brand: Hubbell Wiring Systems   |   Manufacturer: Hubbell

Package Dimensions: 2.8 x 3.9 x 4.2 inches (7.1 x 9.9 x 10.7 cm)

Amazon Price: $51.79 | as of 09/15/2019(9:42am pst)
Availibility: Usually ships in 4-5 business days
List Price: $59.30

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  #13

Symcom MotorSaver 3-Phase Voltage Monitor, Model 250A, 190-480V, DPDT Contacts

Model: 250A   |    Mpn: 250A   |    PartNumber: 250A   |   Asin: B0176L8N4A

SymCom MotorSaver model 250A is a 3-phase, auto-ranging, dual-range voltage monitor that protects 190-480VAC, 50/60Hz motors regardless of size. The product provides a user selectable nominal voltage setpoint and the voltage monitor automatically selects between the 200V and 400V range. This unique microcontroller-based voltage and phase-sensing device constantly monitors the 3-phase voltages to detect harmful power line conditions. When a harmful condition is detected, the MotorSaver's output relay is deactivated after a specified trip delay. The output relay reactivates after power line conditions return to acceptable levels. The Model 250A includes advanced single LED diagnostics. Five different light patterns distinguish between faults and normal conditions.

Features

  • Low voltage, high voltage trip, single-phase trip, reverse-phase trip, Fixed 6% voltage unbalance trip
  • Single LED diagnostics, adjustable restart delay, manual reset selection, DPDT relay output
  • Separate indicators for, power-up restart delay, reverse-phase trip, good voltage/relay energized, unbalance/single-phase trip, high/low voltage trip
  • UL, CSA and CE approved
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Brand: Symcom   |   Manufacturer: Littelfuse

Item Dimensions: 2.93 x 5.27 x 2.95 inches (7.4 x 13.4 x 7.5 cm)   |   Package Dimensions: 4.76 x 4.84 x 7.05 inches (12.1 x 12.3 x 17.9 cm)

Amazon Price: $132.57 | as of 09/15/2019(9:42am pst)
Availibility: Usually ships in 24 hours
List Price: $135.00 | Used Price: $109.99

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  #14

Hubbell Wiring Systems HBL2325SW Twist-Lock Watertight Safety Shroud Flanged Inlet, 20 amp, 250VAC, 2-Pole, 3-Wire Grounding, L6-20P, Gray

Model: 320112   |    Mpn: HBL2325SW   |    Ean: 0783585231143   |    PartNumber: HBL2325SW   |   Asin: B00DJUJ18A

Hubbell watertight safety shroud flanged inlet. High impact, thermoplastic housing for heavy-duty industrial environments. Catalog number and color-coded voltage rating are easily visible when in use. Stainless Steel 302/304, #10 multiple drive head mounting screws provide corrosion resistance. Mounting screw recesses minimize screwdriver slippage. Lockout/tag out hole on inlets allow compliance to OSHA regulation 29 CFR 1910.147. Neoprene closure cap provided with inlets for environmental seal when not in use. Accepts all mating NEMA locking plugs and most connector bodies, allowing interchangeability with existing devices. 20-ampere current rating.

Features

  • High impact, thermoplastic housing for heavy-duty industrial environments
  • Stainless Steel 302/304, #10 multiple drive head mounting screws provide corrosion resistance
  • Mounting screw recesses minimize screwdriver slippage
  • Lockout/tag out hole on inlets allow compliance to OSHA regulation 29 CFR 1910.147
  • Neoprene closure cap provided with inlets for environmental seal when not in use
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Brand: Hubbell Wiring Systems   |   Manufacturer: Hubbell

Package Dimensions: 3.1 x 3.9 x 3.9 inches (7.9 x 9.9 x 9.9 cm)

Amazon Price: $58.63 | as of 09/15/2019(9:42am pst)
Availibility: Usually ships in 1-2 business days
List Price: $65.78

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  #15

DiversiTech DSP-1 Corporation Digital Single Phase Line Voltage Monitor

Model: DSP-1   |    Mpn: DSP-1   |    PartNumber: DSP-1   |   Asin: B008HQ3IJ4

DSP-1 is an automatic voltage monitor and controls for three phase powered equipment. By continuously measuring the incoming line voltage, this monitor will detect any voltage outside the tolerances you set. If the limits that you set are exceeded, the response timer will begin counting. You also have the flexibility to set the response timer -- a shorter time may be desired to avoid nuisance tripping. If the voltage remains outside the tolerance after the response time has elapsed, the DSP-1 will turn off its output relay and protect your device. While the output is off, an additional delay timer is activated to avoid rapid re-starts.

Features

  • Digital voltmeter displays instantaneous line voltage
  • Automatic voltage tester adjusts from 90 to 300 volts
  • Adjustable response timer (0.1 to 10 sec.) prevents nuisance tripping
  • Adjustable delay timer (1 to 720 sec.) prevents rapid re-starts
  • Digital display makes for easy viewing and operation
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Brand: Diversitech   |   Manufacturer: DiversiTech

Package Dimensions: 1.2 x 4.3 x 5.2 inches (3.0 x 10.9 x 13.2 cm)

Amazon Price: $49.28 | as of 09/15/2019(9:42am pst)
Availibility: Usually ships in 24 hours
List Price: $66.82

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  #16

Hubbell GFR8300HGYLA Circuit Guard Hospital Grade GFCI Duplex Receptacle with Auto Grounding, 20 amp, 125 VAC, 2-Pole, 3-Wire Grounding, 5-20 R, Gray

Model: 475035   |    Mpn: GFR8300HGYLA   |    Ean: 0783585379746   |    PartNumber: GFR8300HGYLA   |   Asin: B00IOOM8FY

Hubbell Circuit Guard hospital grade GFCI duplex receptacle with auto grounding. 10kA short circuit current rating. Comprehensive diagnostics. When test button is actuated, both the electronic components and mechanical trip mechanism are functionally tested. Ground fault indicator. Flashing Red indicates device has lost capability to provide protection. No power at face if reverse wired. Open circuit condition eliminates false assumption of protection at face. Installation ease. Internal back wiring. Automatic grounding feature. Captive mounting screws. Flush, nylon face, back and side wired, multiple drive screws, automatic grounding clip. Gray color.

Features

  • Hospital grade GFCI duplex receptacle with auto grounding
  • 10kA short circuit current rating
  • Flashing Red indicates device has lost capability to provide protection
  • Automatic grounding feature
  • Open circuit condition eliminates false assumption of protection at face
  • See more on Amazon...

Brand: Hubbell Wiring Systems   |   Manufacturer: Hubbell

Item Dimensions: 2 x 3.5 x 5 inches (5.1 x 8.9 x 12.7 cm)   |   Package Dimensions: 4 x 4 x 5 inches (10.2 x 10.2 x 12.7 cm)

Amazon Price: $39.99 | as of 09/15/2019(9:42am pst)
Availibility: Usually ships in 1-2 business days
List Price: $44.98

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  #17

Time Mark Corporation A257B Relay; SSR; Phase Monitor; SPDT; Cur-Rtg 10A; Ctrl-V 240AC; Vol-Rtg 480AC; Socke

 PartNumber: D341019-A257B   |   Asin: B00DWIMLHC

Dimensions : 1.7 x 2.44 x 3.52 in. Electrical Phase : 3 Height : 3.52 in. Length : 1.7 in. Maximum Operating Temperature : 131 F Maximum Voltage Sensed : 480 V Minimum Operating Temperature : -20 F Minimum Voltage Sensed : 380 V Monitoring Application : Phase, Voltage Mounting Type : Socket Number of Poles : 1 Operating Temperature Range : -20 to +131 F Phase Sensitivity : Phase Loss, Phase Reversal Series : 257 Special Features : Automatic or Manual Reset Standards Met : CSA, UL Supply Voltage : 480 VAC Terminal Type : Plug-In Time Delay : 50 ms Voltage Sensing Range : 380 to 480 V Voltage Sensitivity : Low Voltage Width : 2.44 in.

Features

Brand: TIME MARK   |   Manufacturer: TIME MARK

Item Dimensions: 4 x 4.63 x 6.5 inches (10.2 x 11.8 x 16.5 cm)   |   Package Dimensions: 2.01 x 2.6 x 4.37 inches (5.1 x 6.6 x 11.1 cm)

Amazon Price: $63.40 | as of 09/15/2019(9:42am pst)
Availibility: Usually ships in 24 hours
List Price: $23.11

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  #18

CARLO GAVAZZI DPA51CM44 Mini 3-Phase Loss/Sequence Monitor, Slim 17.5 mm Width, 208-480 VAC Monitoring, SPDT 5 amp Contact Output, Diagnostic LEDs, 2.8 oz. Size, 24 mm Height x 99 mm Width x 73 mm Diameter

Model: DPA51CM44   |    Mpn: DPA51CM44   |    Ean: 8030956000566   |    PartNumber: DPA51CM44   |   Asin: B00DDF2KDY

3-Phase Monitoring relay for the detection of incorrect phase sequence or total or partial phase loss. Supply range is 208 to 480VAC. The device also detects regenerated voltages up to 85% of the nominal voltage (phase to phase). Compact 17.5mm wide housing snaps onto DIN rail and features two diagnostic LEDs for relay and power supply on. 5 Amp SPDT relay output.

Features

  • 3-Phase Sequence/Loss Monitor
  • Monitors 208-480 VAC
  • 5 Amp SPDT Relay Output
  • Diagnostic LEDs
  • Only 17.5mm wide
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Brand: CARLO GAVAZZI   |   Manufacturer: CARLO GAVAZZI

Package Dimensions: 1 x 2.9 x 3.8 inches (2.5 x 7.4 x 9.7 cm)

First Available: 2017-03-12

Amazon Price: $184.99 | as of 09/15/2019(9:42am pst)
Availibility: Usually ships in 1-2 business days
List Price: $184.99

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  #19

Motor Control Board, YYB-5 12V 24V Two-Way Relay Motor Forward/Reverse Control Board Two Relay Delay Timing Cycle Module

 Ean: 0712979510731   |    PartNumber: Vikyegnpko63qa1   |   Asin: B07SS4QG59

Features:

100% brand new and high quality 6 kinds of commonly used functions to meet the needs of more applications; It can control 2-way solenoid valve, pumps, motors, lights and other running freely Output power: it can control within 30A DC or AC load Time range: 0.1 seconds to 999 minutes any time adjustable


Specification:

Model:YYB-5
Input voltage: DC/ AC7V~27V

Time range: 0.1 seconds to 999 minutes

Weight: Approx.103g/3.6oz



Wiring port Description:

1. AC/DC : Input 7V~27V

3. IN1: Signal input 1 (negative trigger)

4. IN2: Signal input terminal 2 (negative trigger)

2. IN3: Signal input 3 (negative trigger)

5. NO: relay normally open interface, relay pull before the suspension, after the connection with the COM shorted

6. COM: relay common interface

7. NC: relay normally closed interface, the relay before the connection with the COM shorted, pull after the suspension



Decimal time unit Description:

XX.X decimal point in the ten, timing range: 0.1 seconds to 99.9 seconds

XXX no decimal point, timing range: 1 second to 999 seconds

XXX. Decimal points in a single, timing range: 1 minute to 999 minutes




Package list:

1 x Motor Control Board



Features

  • 100% brand new and high quality
  • 6 kinds of commonly used functions to meet the needs of more applications;
  • It can control 2-way solenoid valve, pumps, motors, lights and other running freely
  • Output power: it can control within 30A DC or AC load
  • Time range: 0.1 seconds to 999 minutes any time adjustable
  • See more on Amazon...

Brand: Vikye   |   Manufacturer: Vikye

Item Dimensions: 0.98 x 3.54 x 3.74 inches (2.5 x 9.0 x 9.5 cm)   |   Package Dimensions: 1.85 x 5.43 x 5.47 inches (4.7 x 13.8 x 13.9 cm)

Amazon Price: $16.99 | as of 09/15/2019(9:42am pst)
Availibility: Usually ships in 1-2 business days
List Price: $16.99

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