ReviewsPhase Protective Relay

NR2-93 Thermal Overload Relay Thermal Protector 50-60hz Overload Protection(37-50A)

  • Suitable for using in power system with rated isolation voltage up to 690V, circuit of 50-60hz.
  • Can be used as overload protection of your long term or indirect long term service motor.
  • Used for protecting the phase break when the electric motor is overload.
  • The relay has different mechanism and temperature compensation.
  • With phase break protection, manual and automatic reset, temperature compensation, trip indication, test button and stop button.
Check Stock

CR Magnetics CR2550-A Low Cost Remote Current Indicator with Amber LED, 1.5 AAC Turn-On Point

  • Low cost for high volume OEM installations.
  • Electrical isolation between circuits, output relay rated up to 20 Amps.
  • LED trip status indicator, dead band prevents relay chatter.
  • Calibrated dial option available, external current transformers available.
  • Applications: monitor electrical heater elements, sense motor over/under loads, detect lamp burn-out, indicate phase loss.
  • Variable trip point and time delay, monitors currents from 10 mA to 60 AC amps.
Check Stock

NEW TeSys LRD thermal overload relays LR-D32 LRD32 23-32A Class 10A

  • Working Range: Suitable for using in power system with rated isolation voltage up to 690V, circuit of 50-60hz.
  • Longer Service: Can be used as overload protection of your long term or indirect long term service motor.
  • Protection Function: Used for protecting the phase break when the electric motor is overload.
  • Temperature Compension: The relay has different mechanism and temperature compensation.
  • Multifunctions: With phase break protection, manual and automatic reset, temperature compensation, trip indication, test button and stop button.
Check Stock

Phase Monitoring Relays JVR800-2 Under Over Voltage Protector, Three-Phase Voltage Monitoring Sequence Protection Relay with

  • This monitoring relay can monitor own working voltage..
  • 8 kinds of rated voltages are adjustable, can apply to voltages in all regions of the world.
  • The working status of the relay is indicated by the LED indicator.
  • Ultra-small size and it is easy to install..
  • It is applied to mobile device connection control, causing accidents in equipment protection against reverse operation, normal/emergency power switch, preventing phase failure of power load..
Check Stock

Siemens 14DUE32AF Heavy Duty Motor Starter, Solid State Overload, Auto/Manual Reset, Open Type, Standard Width Enclosure, 3 Phase, 3 Pole, 1 NEMA Size, 10-40A Amp Range, A1 Frame Size, 120 Separate Control 60Hz Coil Voltage

  • Price For: Each Standards: UL, CSA Enclosure NEMA Rating: No Enclosure Starter Type: NEMA Style Hz: 50/60 Item: NEMA Magnetic Motor Starter Auxiliary Contact Form: 1NO Number of Poles: 3 Overload Relay Amp Setting: 5.50 to 22A Action: Nonreversing NEMA Size: 1 Width: 3.5" HP @ 3 Phase - 575V: 10 HP @ 3 Phase - 480V: 10 HP @ 3 Phase - 240V: 3.
  • HP @ 3 Phase - 208V: 3 Height: 7.44" Depth: 3.75" Coil Volts: 120VAC Amps AC: 27 Country of Origin (subject to change): Mexico.
Check Stock

ATO Phase Voltage Monitoring Sequence Relay 1 Phase Voltage Protection Relay Under Over Voltage with 1 CO + 1 NC Contacts AC/DC 24-48V

  • 【Measuring Circuit】Phase sequence protection relay is compatible with AC and DC supply, the rated voltage is AC/DC 24-48V.
  • 【High-quality Product】LCD display indicating voltage, operation and fault status, adjustable reset mode: automatic/manual/automatic with power-on delay reset, fault recording for the lately 3 faults.
  • 【Mutiple Functions】Adjustable overvoltage and undervoltage threshold, independent adjustable delay time for over-voltage, under-voltage.
  • 【Output Contacts】Monitoring relay with 1 CO + 1 NC contacts, and the capacity is 6A, 250V AC (resistive load).
  • 【Wide Applications】Voltage monitoring sequence relay can be applied in equipment or devices from undervoltage and overvoltage in the applications like air compressors, electric motors, pumps, fans, air-conditioning system, blowers, elevators, cranes, refrigeration equipment, laser equipment, industrial control system, etc..
Check Stock

GRV8-02 Single Phase Monitor Relay, Keenso Adjustable Voltage Monitoring Relay Over Voltage Protection AC/DC Voltage Monitoring Relay A220V/ D12V/ AD24-48V/ AD120-240V (GRV8-02/AD240V)

  • 【Effective & Accurate monitoring】-- This GRV8-02 Single Phase Monitor Relay mainly used to monitor the working voltage(true RMS measurement). 100% High accuracy, voltage measurement accuracy is ≤ 1%..
  • 【Built-in LED Display】-- With built-in LED indicator, you can easily get the working status of the relay is indicated, very simple and convenient to use. The operating mode can be selected via the rotary knob..
  • 【Super Function】-- Apply to over voltage protection for electrical equipment or compressors, emergency/backup power switching control. 100% safe and practical AC/DC Monitor Relay..
  • 【Compact & Practical】-- GRV8-02 Monitoring Relay in professional design, compact size, only 18mm width, 35mm rail mounting. Portable and practical for you to operate!.
  • 【Keenso Service】-- 100% test before shipping, fast money refund & perfect customer service! If You Have Any Questions, Just Connect Us By QA & E-Mail.
Check Stock

Three Phase Voltage Monitoring Relay, Three Phase Voltage Small Monitoring Relay Phase Sequence Relay for Mobile Device Connection Control for Mobile Device(M265)

  • This monitoring relay can monitor own working voltage..
  • 8 kinds of rated voltages are adjustable, can apply to voltages in all regions of the world.
  • The working status of the relay is indicated by the LED indicator.
  • Ultra-small size and it is easy to install..
  • It is applied to mobile device connection control, causing accidents in equipment protection against reverse operation, normal/emergency power switch, preventing phase failure of power load..
Check Stock

Siemens 3UG4511-1AP20 Monitoring Relay, Three Phase Voltage, Insulation Monitoring, 22.5mm Width, Screw Terminal, 1 CO Contacts, Delay Time, 420-690 Line Supply Voltage

  • This monitoring relay can monitor own working voltage..
  • 8 kinds of rated voltages are adjustable, can apply to voltages in all regions of the world.
  • The working status of the relay is indicated by the LED indicator.
  • Ultra-small size and it is easy to install..
  • It is applied to mobile device connection control, causing accidents in equipment protection against reverse operation, normal/emergency power switch, preventing phase failure of power load..
Check Stock

SSR-100DD Solid State Relay DC to DC (Input 3-32V DC Output 5-60V DC) with Heat Sink, 100A

  • Model: SSR-100DD, single phase Solid State Relay 100A DC to DC control, CE Compliant to EN60950-1.
  • Input voltage 3-32V DC, Load voltage 5-60V DC, Max load current 100 Amp.
  • Rugged epoxy encapsulation construction, high isolation over than 50MΩ(500VDC), high dielectric over than 2.5KV, output snubber circuit protection.
  • No EMI/EFI & Low surge by Zero Cross Trigger method, specially suited to control sensitive, capacitive and Non-saturated inductive loads.
  • SSR switches use semiconductor component acts as a switch for the relay, no moving parts inside, no mechanical wear, no action noise, no mechanical failure, and high reliability.
Check Stock

CR Magnetics CR6221-500-50 AC Power Transducer with Single Phase Reactive Power, 20 - 5 KHz, 0 - 300 Load, 12 VDC, 0-500 VAC 0-50 AAC Input Range, 4 - 20 mADC Output Range

  • 4 - 20 mAdc outputs, connection diagram printed on case.
  • Electrical isolation between circuits, output relay rated up to 20 Amps.
  • LED trip status indicator, dead band prevents relay chatter.
  • Calibrated dial option available, external current transformers available.
  • Applications: monitor electrical heater elements, sense motor over/under loads, detect lamp burn-out, indicate phase loss.
  • Variable trip point and time delay, monitors currents from 10 mA to 60 AC amps.
Check Stock