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Power System Protection Relay

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Time Relay Overload Relay Relay Switch Relay Electric Relay Contactor

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Advanced Voltage and Current Protection Relay for Power Systems

Advanced Voltage and Current Protection Relay for Power Systems

US $ 3,000-3,500 / unit FOB
1 unit (MOQ)
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Main Products: Power Meter, Electric Meter, Energy Meter, Panel Meter, Power Control System Scada, Single Phase Multifunction Meter, Smart Meter, Protection Relay, Voltage Relay, Control Relay
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Beijing Hezhong Huineng Electric Technology Co., Ltd

Manufacturer/Factory & Trading Company

Beijing, China Since 2025
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New Energy System Grid Anti-Island Protection Relay with Reverse Power Protection

New Energy System Grid Anti-Island Protection Relay with Reverse Power Protection

US $ 220-240 / Piece FOB
20 Pieces (MOQ)
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Customized : Customized
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Ningbo Henghui Electric Co., Ltd.

Zhejiang, China Since 2026
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10kv Substation Protection Relay Device in Power System for Distribution Networks

10kv Substation Protection Relay Device in Power System for Distribution Networks

US $ 310.8-311 / Piece FOB
1 Piece (MOQ)
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Main Products: Power Meter, Energy Meter, WiFi Meter, RS485 Modbus-RTU Meter, Multifunction Relay, Motor Protection Relay, Busbar Temperature Sensor, Power Tag, Insulation Monitor, Current Sensor
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Jiangsu Acrel Electrical Manufacturing Co., Ltd.

Manufacturer/Factory & Trading Company

Jiangsu, China Since 2020
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Advanced Micomp243 Feeder Protection Relay for Power Systems

Advanced Micomp243 Feeder Protection Relay for Power Systems

US $ 1,500-3,000 / unit FOB
1 unit (MOQ)
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Mathematical Model : Linear
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Beijing Hezhong Huineng Electric Technology Co., Ltd

Manufacturer/Factory & Trading Company

Beijing, China Since 2025
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Overcurrent Protection Relays for Electrical Power System

Overcurrent Protection Relays for Electrical Power System

US $ 777-1,036 / Piece FOB
1 Piece (MOQ)
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Main Products: Power Meter, Energy Meter, WiFi Meter, RS485 Modbus-RTU Meter, Multifunction Relay, Motor Protection Relay, Busbar Temperature Sensor, Power Tag, Insulation Monitor, Current Sensor
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Jiangsu Acrel Electrical Manufacturing Co., Ltd.

Manufacturer/Factory & Trading Company

Jiangsu, China Since 2020
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Advanced IEC 61850 Relay Protection System for Efficient Power Management

Advanced IEC 61850 Relay Protection System for Efficient Power Management

US $ 1,500-3,000 / unit FOB
1 unit (MOQ)
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Function : Automatic Control, Protection, Monitoring, Measurement
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Beijing Hezhong Huineng Electric Technology Co., Ltd

Manufacturer/Factory & Trading Company

Beijing, China Since 2025
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Am6 Intelligent Substation Protection Relay for Power Distribution System

Am6 Intelligent Substation Protection Relay for Power Distribution System

US $ 1,235-1,235.5 / Piece FOB
1 Piece (MOQ)
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Main Products: Power Meter, Energy Meter, WiFi Meter, RS485 Modbus-RTU Meter, Multifunction Relay, Motor Protection Relay, Busbar Temperature Sensor, Power Tag, Insulation Monitor, Current Sensor
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Jiangsu Acrel Electrical Manufacturing Co., Ltd.

Manufacturer/Factory & Trading Company

Jiangsu, China Since 2020
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RS485 Modbus Protection Relay Microprocessor for Substation Automation and Power System Monitoring Self Powered

RS485 Modbus Protection Relay Microprocessor for Substation Automation and Power System Monitoring Self Powered

US $ 280 / Set FOB
1 Set (MOQ)
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Certification : ISO9001
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ZHUHAI STROM ELECTRIC CO., LTD.

Manufacturer/Factory & Trading Company

Guangdong, China Since 2026
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Advanced Linear Model Feeder Relay Protection Power System

Advanced Linear Model Feeder Relay Protection Power System

US $ 1,500-2,000 / unit FOB
1 unit (MOQ)
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Main Products: Power Meter, Electric Meter, Energy Meter, Panel Meter, Power Control System Scada, Single Phase Multifunction Meter, Smart Meter, Protection Relay, Voltage Relay, Control Relay
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Beijing Hezhong Huineng Electric Technology Co., Ltd

Manufacturer/Factory & Trading Company

Beijing, China Since 2025
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High Protection Level High Precision Low Power Intermittent Duty Starter Solenoid Relay for Factory Automation System

High Protection Level High Precision Low Power Intermittent Duty Starter Solenoid Relay for Factory Automation System

US $ 4.5-5 / Piece FOB
50 Pieces (MOQ)
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Phase : 3
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Zhejiang Xiangrui Automotive Electrical Appliances Co., Ltd.

Manufacturer/Factory & Trading Company

Zhejiang, China Since 2020
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Power System Relay Protection Commissioning Test Instrument

Power System Relay Protection Commissioning Test Instrument

US $ 2,400 / Set FOB
1 Set (MOQ)
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Main Products: CT PT Analyzer, Relay Protection Test System, Substation DC System Tester, Battery Test System
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Haomai Electric Power Automation Co., Ltd.

Manufacturer/Factory & Trading Company

Hubei, China Since 2017
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P5f30 Series Numerical Relay Integrated Multifunction Protection RS-485 Interface for Power Distribution Systems

P5f30 Series Numerical Relay Integrated Multifunction Protection RS-485 Interface for Power Distribution Systems

US $ 6,500-7,700 / unit FOB
1 unit (MOQ)
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Signal : Discrete
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Audited Supplier
Beijing Hezhong Huineng Electric Technology Co., Ltd

Manufacturer/Factory & Trading Company

Beijing, China Since 2025
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Single-Phase Transformer Three-Phase Transformer Step-Up Transformer Step-Down Transformer Isolation Transformer Control Transformer
Advanced Automatic Protection Relay Device for Power Systems

Advanced Automatic Protection Relay Device for Power Systems

US $ 3,000-3,500 / unit FOB
1 unit (MOQ)
More
Main Products: Power Meter, Electric Meter, Energy Meter, Panel Meter, Power Control System Scada, Single Phase Multifunction Meter, Smart Meter, Protection Relay, Voltage Relay, Control Relay
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Audited Supplier
Beijing Hezhong Huineng Electric Technology Co., Ltd

Manufacturer/Factory & Trading Company

Beijing, China Since 2025
Chat Now Send Inquiry
Strom St28og-T Solid State Medium Voltage Protection Control Relay for Industrial Power Systems and Power Station Feeder

Strom St28og-T Solid State Medium Voltage Protection Control Relay for Industrial Power Systems and Power Station Feeder

US $ 500 / Set FOB
1 Set (MOQ)
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Audited Supplier
ZHUHAI STROM ELECTRIC CO., LTD.

Manufacturer/Factory & Trading Company

Guangdong, China Since 2026
Chat Now Send Inquiry
Protective Guard System Arc Flash Protection Relay for Mv Power Distribution Power Generation

Protective Guard System Arc Flash Protection Relay for Mv Power Distribution Power Generation

US $ 1,500-3,000 / Piece FOB
1 Piece (MOQ)
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Main Products: Panel Meter, Energy Meter, Multifunction Power Meter, Protection Relay, Electrical Transducer, Thermostat, Smart Meter, Temperature Sensor, Energy Metering, Low Voltages
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Audited Supplier
Chongqing Blue Jay Technology Co., Ltd

Chongqing, China Since 2024
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Anti-Island Protection Relay for Home Solar Power 10 Kilowatt

Anti-Island Protection Relay for Home Solar Power 10 Kilowatt

US $ 220-240 / Piece FOB
20 Pieces (MOQ)
More
Certification : CCC, ISO: 9001
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Ningbo Henghui Electric Co., Ltd.

Zhejiang, China Since 2026
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3 Channel Arc Guard Flash Fault Detection Protection Relay for Mv Hv Switchgear Power Distribution Systems

3 Channel Arc Guard Flash Fault Detection Protection Relay for Mv Hv Switchgear Power Distribution Systems

US $ 800-3,000 / Piece FOB
1 Piece (MOQ)
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Main Products: Panel Meter, Energy Meter, Multifunction Power Meter, Protection Relay, Electrical Transducer, Thermostat, Smart Meter, Temperature Sensor, Energy Metering, Low Voltages
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Audited Supplier
Chongqing Blue Jay Technology Co., Ltd

Chongqing, China Since 2024
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Schneider Powerlogic P5 Multifunction Protection Relay for Electrical Power Distribution Systems

Schneider Powerlogic P5 Multifunction Protection Relay for Electrical Power Distribution Systems

US $ 1,600-1,800 / Piece FOB
1 Piece (MOQ)
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Theory : Electromagnetic Relay
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Suzhou Funat Industrial Co., Ltd.

Trading Company

Jiangsu, China Since 2026
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24V DIN Rail Overcurrent Earth Fault Protection AC DC Earth Leakage Relay for Single Phase 3 Phase Power System

24V DIN Rail Overcurrent Earth Fault Protection AC DC Earth Leakage Relay for Single Phase 3 Phase Power System

US $ 50-150 / Piece FOB
1 Piece (MOQ)
More
Main Products: Panel Meter, Energy Meter, Multifunction Power Meter, Protection Relay, Electrical Transducer, Thermostat, Smart Meter, Temperature Sensor, Energy Metering, Low Voltages
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Audited Supplier
Chongqing Blue Jay Technology Co., Ltd

Chongqing, China Since 2024
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Power System Simulator to Test Relays and Schemes with High Accuracy

Power System Simulator to Test Relays and Schemes with High Accuracy

US $ 13,000-18,000 / Piece FOB
1 Piece (MOQ)
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Audited Supplier
Haomai Electric Power Automation Co., Ltd.

Manufacturer/Factory & Trading Company

Hubei, China Since 2017
Chat Now Send Inquiry
Related Videos
  • What is Advanced Voltage and Current Protection Relay for Power Systems
    What is Advanced Voltage and Current Protection Relay for Power Systems
    US $ 3,000-3,500 /unit
    1 unit (MOQ)
    Send Inquiry
  • What is New Energy System Grid Anti-Island Protection Relay with Reverse Power Protection
    What is New Energy System Grid Anti-Island Protection Relay with Reverse Power Protection
    US $ 220-240 /Piece
    20 Pieces (MOQ)
    Send Inquiry
  • What is Advanced Micomp243 Feeder Protection Relay for Power Systems
    What is Advanced Micomp243 Feeder Protection Relay for Power Systems
    US $ 1,500-3,000 /unit
    1 unit (MOQ)
    Send Inquiry
  • What is Overcurrent Protection Relays for Electrical Power System
    What is Overcurrent Protection Relays for Electrical Power System
    US $ 777-1,036 /Piece
    1 Piece (MOQ)
    Send Inquiry
Under Over Voltage Protection Relay for 3 Phase Systems

Under Over Voltage Protection Relay for 3 Phase Systems

US $ 7.32 / Piece FOB
5 Pieces (MOQ)
More
Main Products: Circuit Breaker, Fuse, Automatic Transfer Switching, Voltage Meter, Photovoltaic combiner box, Surge protective devices
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Audited Supplier
Zhejiang Tongzheng Electric Co., Ltd.

Manufacturer/Factory & Trading Company

Zhejiang, China Since 2025
Chat Now Send Inquiry
Low-Power Consumption Combination Structure Generator Protection Electrical Control System Relay

Low-Power Consumption Combination Structure Generator Protection Electrical Control System Relay

US $ 1,500-2,000 / unit FOB
1 unit (MOQ)
More
Customized : Non-Customized
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Audited Supplier
Beijing Hezhong Huineng Electric Technology Co., Ltd

Manufacturer/Factory & Trading Company

Beijing, China Since 2025
Chat Now Send Inquiry
Strom Factory Middle Voltage Electronic Over Current Protection Relay for Electric Transformer/Power Line Auto Switch Function

Strom Factory Middle Voltage Electronic Over Current Protection Relay for Electric Transformer/Power Line Auto Switch Function

US $ 480 / Set FOB
1 Set (MOQ)
More
Main Products: Secondary Devices For Substations, Power Plants, Transformers, Including Protection Relay, Power Meter, Online Monitoring And Measurement, Controlling Devices
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Audited Supplier
ZHUHAI STROM ELECTRIC CO., LTD.

Manufacturer/Factory & Trading Company

Guangdong, China Since 2026
Chat Now Send Inquiry

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About Power System Protection Relay FAQ

  • QHow do I get the best price on wholesale transformers from the factory?

    The Power System Protection Relay is an essential part of our Transformer offerings.Compare transformer market trends and work with a direct factory for bulk discount price options. Choosing an established OEM transformer supplier ensures access to top distributor rates and custom features. Ask about current deals or fast RFQs for your next order.

  • QWhat’s the difference between OEM and custom transformers in bulk orders?

    Discover the perfect Transformer addition with our Power System Protection Relay.OEM transformers follow standard specs, while custom transformers are tailored for unique factory requirements and wholesale projects. OEM transformer distributor prices are usually lower for large quantities. Contact us for help with guide selection and current transformer trends, or request a custom quote today.

  • QWhat are today's transformer trends and common mistakes to avoid during purchasing?

    The Power System Protection Relay is classified under our comprehensive Transformer range.Recent transformer demand leans toward energy-efficient OEM and custom units; however, buyers sometimes ignore factory certifications or cost-saving distributor bundles. Always check transformer trends in the industry and discuss custom needs—contact us for a trend guide, factory pricing, or to avoid common sourcing mistakes.

Industrial Relay Protection Calibration System

Industrial Relay Protection Calibration System

US $ 2,400 / Set FOB
1 Set (MOQ)
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Application : Electrical & Electronics
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Audited Supplier
Haomai Electric Power Automation Co., Ltd.

Manufacturer/Factory & Trading Company

Hubei, China Since 2017
Chat Now Send Inquiry
Romaz Rdr-4D Draw-out Overcurrent Earth Fault Relay

Romaz Rdr-4D Draw-out Overcurrent Earth Fault Relay

US $ 148-370 / Piece FOB
1 Piece (MOQ)
More
Main Products: Power Quality Analyzer, Network Analyzer, Multi Meter, Energy Meter, Power Meter, Electric Smart Analyzer, Multifunctional Meter
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Audited Supplier
Romaz Technology Co., Ltd

Manufacturer/Factory & Trading Company

Guangdong, China Since 2023
Chat Now Send Inquiry
PV Grid-Connection Anti-Island Protection Relay with Reverse Power Protection

PV Grid-Connection Anti-Island Protection Relay with Reverse Power Protection

US $ 220-240 / Piece FOB
20 Pieces (MOQ)
More
Condition : New
Send Inquiry
Audited Supplier
Ningbo Henghui Electric Co., Ltd.

Zhejiang, China Since 2026
Chat Now Send Inquiry
Self-Monitoring Arc Flash Relay for Battery Energy Storage Systems

Self-Monitoring Arc Flash Relay for Battery Energy Storage Systems

US $ 800-2,000 / Piece FOB
1 Piece (MOQ)
More
Main Products: Panel Meter, Energy Meter, Multifunction Power Meter, Protection Relay, Electrical Transducer, Thermostat, Smart Meter, Temperature Sensor, Energy Metering, Low Voltages
Send Inquiry
Audited Supplier
Chongqing Blue Jay Technology Co., Ltd

Chongqing, China Since 2024
Chat Now Send Inquiry
Motor Protection Relay Siemens 3RR2241-1FA30 Adjustable Current Monitoring 3-Phase 1.6-16A for Non-Adjustable Systems Relays

Motor Protection Relay Siemens 3RR2241-1FA30 Adjustable Current Monitoring 3-Phase 1.6-16A for Non-Adjustable Systems Relays

US $ 50-1,000 / Piece FOB
1 Piece (MOQ)
More
Usage : Car Relay, Household Appliances Relay, Communication Relay, Lathe Relay
Send Inquiry
Audited Supplier
Beijing Zhongping Technology Co., Ltd.

Trading Company

Beijing, China Since 2025
Chat Now Send Inquiry
Heavy Duty High Current Starter Relay for Auto Protection

Heavy Duty High Current Starter Relay for Auto Protection

US $ 0.1-0.3 / Piece FOB
500 Pieces (MOQ)
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Main Products: Spare Parts of Home Appliance, AC DC Fan Motor, Filter Drier, AC Contactor, Gas Torch, Compressor, Defrosting Timer, Manifold Guage, Thermostat, Remote Control
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Audited Supplier
Ningbo Coolwell Import & Export Co., Ltd.

Trading Company

Zhejiang, China Since 2021
Chat Now Send Inquiry
High Voltage Electrical Relay System for Circuit Protection

High Voltage Electrical Relay System for Circuit Protection

US $ 2.1-2.3 / Piece FOB
1,000 Pieces (MOQ)
More
Load : Medium Power Relay
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Audited Supplier
Nanjing Zhengfeng Foreign Trade Services Co., Ltd.

Jiangsu, China Since 2022
Chat Now Send Inquiry
Elr-CH16 Multi-Channel Earth Leakage Relay for TNC-S Tn-S Tt Systems

Elr-CH16 Multi-Channel Earth Leakage Relay for TNC-S Tn-S Tt Systems

US $ 150-160 / Piece FOB
10 Pieces (MOQ)
More
Main Products: Panel Meter, Energy Meter, Multifunction Power Meter, Protection Relay, Electrical Transducer, Thermostat, Smart Meter, Temperature Sensor, Energy Metering, Low Voltages
Send Inquiry
Audited Supplier
Chongqing Blue Jay Technology Co., Ltd

Chongqing, China Since 2024
Chat Now Send Inquiry
Strom High Power Subminiature Industrial Power Systems OEM Supplier Distance Relays for Power Stations Renewable Sealed Switch

Strom High Power Subminiature Industrial Power Systems OEM Supplier Distance Relays for Power Stations Renewable Sealed Switch

US $ 500 / Set FOB
1 Set (MOQ)
Send Inquiry
Audited Supplier
ZHUHAI STROM ELECTRIC CO., LTD.

Manufacturer/Factory & Trading Company

Guangdong, China Since 2026
Chat Now Send Inquiry
Conveyor System Thermal Relay for Material Handling Equipment Protection

Conveyor System Thermal Relay for Material Handling Equipment Protection

US $ 2-2.5 / Piece FOB
1 Piece (MOQ)
More
Main Products: Air Circuit Breaker, Molded Case Circuit Breaker, Vacuum Circuit Breaker, Fireman Switch, Miniature Circuit Breakers
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Audited Supplier
Yueqing Quansheng Electric Co., Ltd.

Zhejiang, China Since 2020
Chat Now Send Inquiry
Advanced Universal Power Relay for Efficient Electrical Control Systems

Advanced Universal Power Relay for Efficient Electrical Control Systems

US $ 1,500-2,000 / unit FOB
1 unit (MOQ)
More
Mathematical Model : Linear
Send Inquiry
Audited Supplier
Beijing Hezhong Huineng Electric Technology Co., Ltd

Manufacturer/Factory & Trading Company

Beijing, China Since 2025
Chat Now Send Inquiry
Versatile Acrel Am5se-F Protection Relay for Efficient 35kv Systems

Versatile Acrel Am5se-F Protection Relay for Efficient 35kv Systems

US $ 777 / Piece FOB
1 Piece (MOQ)
More
Main Products: Energy Meter, Transformer Current, Temperature&Humidity Controller, Medical It System, Active Power Filter, Static Var Generator, Charging Pile
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Audited Supplier
ACREL CO., LTD.

Manufacturer/Factory & Trading Company

Shanghai, China Since 2019
Chat Now Send Inquiry
AC DC 90-240V 16 Channel Earth Fault Earth Leakage Relay for Tt Tn-S Systems

AC DC 90-240V 16 Channel Earth Fault Earth Leakage Relay for Tt Tn-S Systems

US $ 90-100 / Piece FOB
10 Pieces (MOQ)
More
Action Principle : Electromagnetic Type
Send Inquiry
Audited Supplier
Chongqing Blue Jay Technology Co., Ltd

Chongqing, China Since 2024
Chat Now Send Inquiry
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