Products

Suppliers
Filter Gallery
160,625

Power System Protection Relay

Products
Time Relay Overload Relay Relay Switch Relay Electric Relay Contactor

Sorry! No matches were found.

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)
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
Send Inquiry
Audited Supplier
Beijing Hezhong Huineng Electric Technology Co., Ltd

Manufacturer/Factory & Trading Company

Beijing, China Since 2025
Chat Now Send Inquiry
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)
More
Customized : Customized
Send Inquiry
Audited Supplier
Ningbo Henghui Electric Co., Ltd.

Zhejiang, China Since 2026
Chat Now Send Inquiry
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)
More
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
Send Inquiry
Audited Supplier
Jiangsu Acrel Electrical Manufacturing Co., Ltd.

Manufacturer/Factory & Trading Company

Jiangsu, China Since 2020
Chat Now Send Inquiry
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)
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
Overcurrent Protection Relays for Electrical Power System

Overcurrent Protection Relays for Electrical Power System

US $ 777-1,036 / Piece FOB
1 Piece (MOQ)
More
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
Send Inquiry
Audited Supplier
Jiangsu Acrel Electrical Manufacturing Co., Ltd.

Manufacturer/Factory & Trading Company

Jiangsu, China Since 2020
Chat Now Send Inquiry
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)
More
Structure : Combination
Send Inquiry
Audited Supplier
Beijing Hezhong Huineng Electric Technology Co., Ltd

Manufacturer/Factory & Trading Company

Beijing, China Since 2025
Chat Now Send Inquiry
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)
More
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
Send Inquiry
Audited Supplier
Jiangsu Acrel Electrical Manufacturing Co., Ltd.

Manufacturer/Factory & Trading Company

Jiangsu, China Since 2020
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
Send Inquiry
Audited Supplier
Beijing Hezhong Huineng Electric Technology Co., Ltd

Manufacturer/Factory & Trading Company

Beijing, China Since 2025
Chat Now Send Inquiry
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)
More
Main Products: Secondary Devices For Substations, Power Plants, Transformers, Including Protection Relay, Power Meter, Online Monitoring And Measurement, Controlling Devices
Send Inquiry
Audited Supplier
ZHUHAI STROM ELECTRIC CO., LTD.

Manufacturer/Factory & Trading Company

Guangdong, China Since 2026
Chat Now Send Inquiry
Schneider Powerlogic P5 Multifunction Protection Relay for Electrical Power Distribution Systems

Schneider Powerlogic P5 Multifunction Protection Relay for Electrical Power Distribution Systems

US $ 1,600-1,750 / Piece FOB
1 Piece (MOQ)
More
Number of Pole : 4
Send Inquiry
Audited Supplier
Suzhou Funat Industrial Co., Ltd.

Trading Company

Jiangsu, China Since 2026
Chat Now Send Inquiry
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)
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
Power System Relay Protection Commissioning Test Instrument

Power System Relay Protection Commissioning Test Instrument

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

Manufacturer/Factory & Trading Company

Hubei, China Since 2017
Chat Now Send Inquiry
Related Searches
Relay Protection Thermal Relay Overcurrent Protection Thermal Overload Relay Relay Valve Power System
Transformer Test Machine Electrical Control System Variable-Frequency Drive Power Distribution Cabinet & Box Switchgear
Single-Phase Transformer Three-Phase Transformer Step-Up Transformer Step-Down Transformer Isolation Transformer Control Transformer
Harness GSM Compatible Remote Power Cutoff Protection System Automotive GPS Tracker Relay

Harness GSM Compatible Remote Power Cutoff Protection System Automotive GPS Tracker Relay

US $ 0.8-1 / Set FOB
50 Sets (MOQ)
More
Main Products: GPS Tracker
Send Inquiry
Audited Supplier
Shenzhen Yituo Wulian System Co.,Ltd

Guangdong, China Since 2014
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)
More
Load : Medium Power Relay
Send Inquiry
Audited Supplier
Chongqing Blue Jay Technology Co., Ltd

Chongqing, China Since 2024
Chat Now Send Inquiry
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)
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
Send Inquiry
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)
Send Inquiry
Audited Supplier
ZHUHAI STROM ELECTRIC CO., LTD.

Manufacturer/Factory & Trading Company

Guangdong, China Since 2026
Chat Now Send Inquiry
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
Send Inquiry
Audited Supplier
Chongqing Blue Jay Technology Co., Ltd

Chongqing, China Since 2024
Chat Now Send Inquiry
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
Function : Automatic Control, Protection, Monitoring, Measurement
Send Inquiry
Audited Supplier
Beijing Hezhong Huineng Electric Technology Co., Ltd

Manufacturer/Factory & Trading Company

Beijing, China Since 2025
Chat Now Send Inquiry
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
Main Products: Box Substation, Transformer, Power Cabinet, Switchgear, Electrical Component, High & Low Voltage Cabinet, Middle Mounted Switchgear, PV Grid Connected Cabinet, Control Cabinet, Distribution Box
Send Inquiry
Audited Supplier
Ningbo Henghui Electric Co., Ltd.

Zhejiang, China Since 2026
Chat Now Send Inquiry
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)
Send Inquiry
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 IEC 61850 Relay Protection System for Efficient Power Management
    What is Advanced IEC 61850 Relay Protection System for Efficient Power Management
    US $ 1,500-3,000 /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 Am6 Intelligent Substation Protection Relay for Power Distribution System
    What is Am6 Intelligent Substation Protection Relay for Power Distribution System
    US $ 1,235-1,235.5 /Piece
    1 Piece (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
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
Send Inquiry
Audited Supplier
Zhejiang Tongzheng Electric Co., Ltd.

Manufacturer/Factory & Trading Company

Zhejiang, China Since 2025
Chat Now Send Inquiry
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)
More
Signal : Continuous
Send Inquiry
Audited Supplier
Beijing Hezhong Huineng Electric Technology Co., Ltd

Manufacturer/Factory & Trading Company

Beijing, China Since 2025
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
Send Inquiry
Audited Supplier
Yueqing Quansheng Electric Co., Ltd.

Zhejiang, China Since 2020
Chat Now Send Inquiry

Not exactly what you want?

Post Sourcing Request

About Power System Protection Relay FAQ

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

    Our Power System Protection Relay offers exceptional quality within the Transformer category.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 are today's transformer trends and common mistakes to avoid during purchasing?

    Our Power System Protection Relay offers exceptional quality and style within the Transformer category.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.

  • 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.

Auto Three Phase AC Voltage Monitoring Relays Over Under Voltage Protection Relay with CE

Auto Three Phase AC Voltage Monitoring Relays Over Under Voltage Protection Relay with CE

US $ 8.73-10.62 / Piece FOB
100 Pieces (MOQ)
More
Theory : Electromagnetic Relay
Send Inquiry
Audited Supplier
Yueqing Aukeman Trading Co., Ltd.

Zhejiang, China Since 2010
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
Send Inquiry
Audited Supplier
ZHUHAI STROM ELECTRIC CO., LTD.

Manufacturer/Factory & Trading Company

Guangdong, China Since 2026
Chat Now Send Inquiry
Chq3-G Series Single Phase 230V DIN Rail Adjustable Protector Relay Dual LED Display 40A 63A Over and Under Voltage Protective Device

Chq3-G Series Single Phase 230V DIN Rail Adjustable Protector Relay Dual LED Display 40A 63A Over and Under Voltage Protective Device

US $ 22.11 / Piece FOB
10 Pieces (MOQ)
More
Shape : Gyro Type
Send Inquiry
Audited Supplier
Zhejiang Tengtai Lightning Protection Technology Co., Ltd

Zhejiang, China Since 2011
Chat Now Send Inquiry
Auto Reclosing Bi-Stable Magnetic Latching Relay K88n 90A 250VAC Electronic Relay for Power Distribution Protection Equipment

Auto Reclosing Bi-Stable Magnetic Latching Relay K88n 90A 250VAC Electronic Relay for Power Distribution Protection Equipment

US $ 3.2-5 / Piece FOB
100 Pieces (MOQ)
More
Main Products: DC Contactor, Automotive Relay, Battery Disconnect Switch, Electronic Relay, Electromagnetic Relay, Switch, Auto Parts, Relay Base
Send Inquiry
Audited Supplier
Yueqing Zolann Electric Co., Ltd.

Manufacturer/Factory & Trading Company

Zhejiang, China Since 2026
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
Certification : CCC, ISO: 9001
Send Inquiry
Audited Supplier
Ningbo Henghui Electric Co., Ltd.

Zhejiang, China Since 2026
Chat Now Send Inquiry
Residual Current Relay 56173 0.03-30A 220-240VAC Manual Reset Electrical Protection Control Systems

Residual Current Relay 56173 0.03-30A 220-240VAC Manual Reset Electrical Protection Control Systems

US $ 274.57 / Piece FOB
10 Pieces (MOQ)
More
Main Products: Variable Frequency Drive, Servo Motor, Servo Drive, Relay, Contactor, Sensor, Drive, Soft Starter, Circuit Breaker, Isolator Switch
Send Inquiry
Shenzhen Seg Technology Co., Ltd

Fujian, China Since 2026
Chat Now Send Inquiry
K8ak-Ts1 Temperature Monitoring Relay for Motor Protection Systems

K8ak-Ts1 Temperature Monitoring Relay for Motor Protection Systems

US $ 75-85 / Piece FOB
1 Piece (MOQ)
More
Action Principle : Electronic Type
Send Inquiry
Wenzhou Jifeng Electrical Technology Co., Ltd.

Zhejiang, China Since 2026
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
Send Inquiry
Audited Supplier
Romaz Technology Co., Ltd

Manufacturer/Factory & Trading Company

Guangdong, China Since 2023
Chat Now Send Inquiry
Professional Portable Relay Protection Test System with Waveform Analysis

Professional Portable Relay Protection Test System with Waveform Analysis

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

Manufacturer/Factory & Trading Company

Hubei, China Since 2017
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)
More
Main Products: Secondary Devices For Substations, Power Plants, Transformers, Including Protection Relay, Power Meter, Online Monitoring And Measurement, Controlling Devices
Send Inquiry
Audited Supplier
ZHUHAI STROM ELECTRIC CO., LTD.

Manufacturer/Factory & Trading Company

Guangdong, China Since 2026
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)
Send Inquiry
Audited Supplier
ACREL CO., LTD.

Manufacturer/Factory & Trading Company

Shanghai, China Since 2019
Chat Now Send Inquiry
Reliable Power Relay for Enhanced Motor Control Systems

Reliable Power Relay for Enhanced Motor Control Systems

US $ 1,500-2,000 / 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
Send Inquiry
Audited Supplier
Beijing Hezhong Huineng Electric Technology Co., Ltd

Manufacturer/Factory & Trading Company

Beijing, China Since 2025
Chat Now Send Inquiry
DIN Rail 230V Adjustable Over Voltage and Under Voltage Protective Device Protector Relay

DIN Rail 230V Adjustable Over Voltage and Under Voltage Protective Device Protector Relay

US $ 22.11 / Piece FOB
10 Pieces (MOQ)
More
Material : Ceramic
Send Inquiry
Audited Supplier
Zhejiang Tengtai Lightning Protection Technology Co., Ltd

Zhejiang, China Since 2011
Chat Now Send Inquiry
View More

Related Searches

Power Relay Latching Relay Starter Relay Telecom Relay Electric Power Set Electric Power Equipment LED Power Supply Electric Power System High Voltage Power Supply Power Supply Products

You may also like

PC Power Supply battery management system high capacity power Electric Motor Power power supply equipment Electric Power Supply

Browse by Categories

Home > Electrical & Electronics > Power Transmission & Transformer > Transformer > Single-Phase Transformer
1/834
TOP

Search Filter

Categories

More Less
  • Transformer
  • Test Machine
  • Electrical Control System
  • Variable-Frequency Drive
  • Power Distribution Cabinet & Box
  • Switchgear
  • Instrument Transformer
  • Relay
  • Circuit Breaker
  • Other Meters for Electricity

Action Principle

More Less
  • Electromagnetic Type
  • Electronic Type
  • Numeric Type
  • Rectifier Type
  • Induction Type

Number of Pole

More Less
  • 1
  • 2
  • 3
  • 4
  • 8
  • 5

Phase

More Less
  • 1
  • 3
  • 2

Type

More Less
  • Electric Parameter Relay
  • Non-Electric Parameter Relay

Usage

More Less
  • Household Appliances Relay
  • Communication Relay
  • Car Relay
  • Lathe Relay

Company Type

More Less
  • Trading Company
  • Manufacturer/Factory
  • Group Corporation
  • Other

Company Location

More Less
  • Zhejiang
  • Guangdong
  • Shandong
  • Jiangsu
  • Hubei
  • Fujian
  • Shanghai
  • Hebei
  • Anhui
  • Henan
  • Shaanxi
  • Beijing
  • Tianjin
  • Hunan
  • Jiangxi
  • Chongqing
  • Sichuan
  • Liaoning
  • Hainan
  • Yunnan
  • Ningxia
  • Hongkong S.A.R.
  • Guangxi
  • Gansu
  • Guizhou
  • Heilongjiang
  • Jilin
  • Shanxi
Reset Done