Products

Suppliers
Filter Gallery
121,462

Power System Protection Relay

Products
Time Relay Overload Relay Relay Switch Relay Electric Relay Contactor

Sorry! No matches were found.

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

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
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
Current : DC
Send Inquiry
Audited Supplier
ZHUHAI STROM ELECTRIC CO., LTD.

Manufacturer/Factory & Trading Company

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

Advanced Linear Model Feeder Relay Protection Power System

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

Manufacturer/Factory & Trading Company

Beijing, China Since 2025
Chat Now Send Inquiry
Reliable China Micomp243 Feeder Protection Relay for Power Systems
Secured Trading Service

Reliable China Micomp243 Feeder Protection Relay for Power Systems

US $ 6,500-7,700 / 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
Overcurrent Protection Relays for Electrical Power System

Overcurrent Protection Relays for Electrical Power System

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

Manufacturer/Factory & Trading Company

Jiangsu, China Since 2020
Chat Now Send Inquiry
Power System Relay Protection Commissioning Test Instrument
Secured Trading Service

Power System Relay Protection Commissioning Test Instrument

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

Manufacturer/Factory & Trading Company

Hubei, China Since 2017
Chat Now Send Inquiry
24V DIN Rail Overcurrent Earth Fault Protection AC DC Earth Leakage Relay for Single Phase 3 Phase Power System
Secured Trading Service

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
Type : Electric Parameter Relay
Send Inquiry
Audited Supplier
Chongqing Blue Jay Technology Co., Ltd

Chongqing, China Since 2024
Chat Now Send Inquiry
Reliable Feeder Protection Relay Micomp243 for Power Systems
Secured Trading Service

Reliable Feeder Protection Relay Micomp243 for Power Systems

US $ 6,500-7,700 / 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
Low-Power Consumption Combination Structure Generator Protection Electrical Control System Relay
Secured Trading Service

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

US $ 1,500-2,000 / unit FOB
1 unit (MOQ)
More
Function : 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
Protective Guard System Arc Flash Protection Relay for Mv Power Distribution Power Generation
Secured Trading Service

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

US $ 1,500-3,000 / 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
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
Related Searches
Relay Protection Thermal Relay Overcurrent Protection Thermal Overload Relay Relay Valve Power System
Transformer Electrical Control System Test Machine Power Distribution Cabinet & Box Circuit Breaker Voltage Regulator
Single-Phase Transformer Three-Phase Transformer Step-Up Transformer Step-Down Transformer Isolation Transformer Control Transformer
Advanced Voltage and Current Protection Relay for Power Systems
Secured Trading Service

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

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
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
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 Automatic Protection Relay Device for Power Systems
Secured Trading Service

Advanced Automatic Protection Relay Device for Power Systems

US $ 3,000-3,500 / unit FOB
1 unit (MOQ)
More
Material : Stainless Steel
Send Inquiry
Audited Supplier
Beijing Hezhong Huineng Electric Technology Co., Ltd

Manufacturer/Factory & Trading Company

Beijing, China Since 2025
Chat Now Send Inquiry
Power System Simulator to Test Relays and Schemes with High Accuracy
Secured Trading Service

Power System Simulator to Test Relays and Schemes with High Accuracy

US $ 13,000-18,000 / Piece FOB
1 Piece (MOQ)
More
Main Products: CT PT Analyzer, Relay Protection Test System, Substation DC System Tester, Battery Test System
Send Inquiry
Audited Supplier
Haomai Electric Power Automation Co., Ltd.

Manufacturer/Factory & Trading Company

Hubei, China Since 2017
Chat Now Send Inquiry
Advanced Feeder Power Relay for Enhanced Protection Systems
Secured Trading Service

Advanced Feeder Power Relay for Enhanced Protection Systems

US $ 6,500-7,700 / unit FOB
1 unit (MOQ)
More
Certification : RoHS, CCC, ISO: 9001, CE
Send Inquiry
Audited Supplier
Beijing Hezhong Huineng Electric Technology Co., Ltd

Manufacturer/Factory & Trading Company

Beijing, China Since 2025
Chat Now Send Inquiry
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
Main Products: Electronic Relay, Motor Protector, Voltage Relay, Current Relay, Time Relay
Send Inquiry
Audited Supplier
Yueqing Aukeman Trading Co., Ltd.

Zhejiang, China Since 2010
Chat Now Send Inquiry
Single Phase AC DIN Rail Adjustable Over Low Voltage and Under Voltage Protector Relay with Over Current
Secured Trading Service

Single Phase AC DIN Rail Adjustable Over Low Voltage and Under Voltage Protector Relay with Over Current

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

Zhejiang, China Since 2011
Chat Now Send Inquiry
Related Videos
  • What is 3 Channel Arc Guard Flash Fault Detection Protection Relay for Mv Hv Switchgear Power Distribution Systems
    What is 3 Channel Arc Guard Flash Fault Detection Protection Relay for Mv Hv Switchgear Power Distribution Systems
    US $ 800-3,000 /Piece
    1 Piece (MOQ)
    Send Inquiry
  • What is RS485 Modbus Protection Relay Microprocessor for Substation Automation and Power System Monitoring Self Powered
    What is RS485 Modbus Protection Relay Microprocessor for Substation Automation and Power System Monitoring Self Powered
    US $ 280 /Set
    1 Set (MOQ)
    Send Inquiry
  • What is Advanced Linear Model Feeder Relay Protection Power System
    What is Advanced Linear Model Feeder Relay Protection Power System
    US $ 1,500-2,000 /unit
    1 unit (MOQ)
    Send Inquiry
  • What is Reliable China Micomp243 Feeder Protection Relay for Power Systems
    What is Reliable China Micomp243 Feeder Protection Relay for Power Systems
    US $ 6,500-7,700 /unit
    1 unit (MOQ)
    Send Inquiry
Electronic Digital Motor Protection Relay Overload Relays with LCD Screen, for 3p3w 380VAC 415VAC Generator System

Electronic Digital Motor Protection Relay Overload Relays with LCD Screen, for 3p3w 380VAC 415VAC Generator System

US $ 60-150 / 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
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)
More
Protective Characteristics : Sealed Relay
Send Inquiry
Audited Supplier
Ningbo Coolwell Import & Export Co., Ltd.

Trading Company

Zhejiang, China Since 2021
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
Main Products: PLC Controller and Modules, Servo Drives and Motors, Soft Starter, Inverters, Power Supply, Sensor, Relay, HMI, Circuit Breaker, Industrial Control Accessories
Send Inquiry
Wenzhou Jifeng Electrical Technology Co., Ltd.

Zhejiang, China Since 2026
Chat Now Send Inquiry

Not exactly what you want?

Post Sourcing Request

About Power System Protection Relay FAQ

  • QWhat factors affect transformer pricing?

    Our Power System Protection Relay offers exceptional quality within the Transformer category.Transformer cost can vary with capacity, material, and manufacturer standards. Choose OEM options for customization at competitive wholesale prices. Request price info from top distributors to save time and secure the best deal.

  • QHow to find a suitable transformer for factory use?

    The Power System Protection Relay is included in our comprehensive Transformer range.When selecting, look for transformers meeting energy-saving standards and correct voltage ratings. Consult our guides for expert OEM transformer insights and engage with top industry distributors to evaluate efficiency and cost-effectiveness swiftly.

  • QWhat are the trends in modern transformers?

    The Power System Protection Relay is a top choice in our Transformer collection.Today's transformation technology emphasizes efficient energy use and environmental safety. Trends include smart transformers and customizable factory designs. Always inquire about trends and seek advice on innovative, cheap options suited for your specific needs.

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
High Voltage Electrical Relay System for Circuit Protection
Secured Trading Service

High Voltage Electrical Relay System for Circuit Protection

US $ 2.1-2.3 / Piece FOB
1,000 Pieces (MOQ)
More
Main Products: Casting, Transformer, AC Contactor, Voltage Stabilizer, Relay, Motor Circuit Breaker, Motor Protection Relay, Contactor, Photovoltaic Inverter, Load Switch
Send Inquiry
Audited Supplier
Nanjing Zhengfeng Foreign Trade Services Co., Ltd.

Jiangsu, China Since 2022
Chat Now Send Inquiry
Versatile Acrel Am5se-F Protection Relay for Efficient 35kv Systems
Secured Trading Service

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

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
Main Products: Current Transformer, Transformer, Mutual Inductor, Inductor, High Voltage Transformer, Low Voltage Transformer, High Voltage Inductor, Surge Protective Device, Surge, Protective Device
Send Inquiry
Audited Supplier
Zhejiang Tengtai Lightning Protection Technology Co., Ltd

Zhejiang, China Since 2011
Chat Now Send Inquiry
Professional Portable Relay Protection Test System with Waveform Analysis
Secured Trading Service

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
Auxiliary Contact Thermal Relay for Alarm Indication and System Interlocking
Secured Trading Service

Auxiliary Contact Thermal Relay for Alarm Indication and System Interlocking

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
Test-330 Three Phase Relay Protection Microcomputer Test System

Test-330 Three Phase Relay Protection Microcomputer Test System

US $ 3,000-6,500 / Piece FOB
1 Piece (MOQ)
More
Load : Medium Power Relay
Send Inquiry
Audited Supplier
Beijing GFUVE Electronics Co., Ltd.

Beijing, China Since 2013
Chat Now Send Inquiry
60A DIN Rail 230V Adjustable Over Under Voltage Protective Device Protector Relay
Secured Trading Service

60A DIN Rail 230V Adjustable Over Under Voltage Protective Device Protector Relay

US $ 22.11 / Piece FOB
10 Pieces (MOQ)
More
Main Products: Current Transformer, Transformer, Mutual Inductor, Inductor, High Voltage Transformer, Low Voltage Transformer, High Voltage Inductor, Surge Protective Device, Surge, Protective Device
Send Inquiry
Audited Supplier
Zhejiang Tengtai Lightning Protection Technology Co., Ltd

Zhejiang, China Since 2011
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)
Send Inquiry
Audited Supplier
ZHUHAI STROM ELECTRIC CO., LTD.

Manufacturer/Factory & Trading Company

Guangdong, China Since 2026
Chat Now Send Inquiry
Cost Effective Thermal Relay for HVAC System Motor Protection
Secured Trading Service

Cost Effective Thermal Relay for HVAC System Motor 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
Three Phase Thermal Overload Relay Lrd33 Motor Protection Relay with Manual/Auto Reset for AC Contactor

Three Phase Thermal Overload Relay Lrd33 Motor Protection Relay with Manual/Auto Reset for AC Contactor

US $ 8.52-10.61 / Piece FOB
5 Pieces (MOQ)
More
Type : Electric Parameter Relay
Send Inquiry
Audited Supplier
Yueqing Shendian Electrical Co., Ltd.

Zhejiang, China Since 2012
Chat Now Send Inquiry
DIN Rail 230V Adjustable Over Voltage and Under Voltage Protective Device Protector Relay
Secured Trading Service

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

US $ 22.11 / Piece FOB
10 Pieces (MOQ)
More
Main Products: Current Transformer, Transformer, Mutual Inductor, Inductor, High Voltage Transformer, Low Voltage Transformer, High Voltage Inductor, Surge Protective Device, Surge, Protective Device
Send Inquiry
Audited Supplier
Zhejiang Tengtai Lightning Protection Technology Co., Ltd

Zhejiang, China Since 2011
Chat Now Send Inquiry
Earth Leakage Relay for VSD VFD PC System Transformer Motor Control Panel
Secured Trading Service

Earth Leakage Relay for VSD VFD PC System Transformer Motor Control Panel

US $ 130-160 / Piece FOB
1 Piece (MOQ)
More
Number of Pole : 1
Send Inquiry
Audited Supplier
Chongqing Blue Jay Technology Co., Ltd

Chongqing, China Since 2024
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
  • Electrical Control System
  • Test Machine
  • Power Distribution Cabinet & Box
  • Circuit Breaker
  • Voltage Regulator
  • Instrument Transformer
  • Switchgear
  • Relay
  • Other Meters for Electricity

Action Principle

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

Number of Pole

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

Phase

More Less
  • 3
  • 1
  • 2

Type

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

Usage

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

Company Type

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

Company Location

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