PR 260 electronic motor protection relay is a motor management device with a modular design that accommodates many I/O modules. The product can flexibly arrange motor control modes and state sensing. In addition, PR260 monitors voltage, current, and temperature and provides a comprehensive package of 22 protective functions. The over-current relay has some functions, including integrated protection, motor control, metering, and data logging.
Main control module (mandatory): The core component responsible for overall control and protection.
Measurement module (mandatory): This module measures key parameters such as current, voltage, and power. It also includes connecting cables for integration with the motor. With the built-in residual current transformer in the measurement module, the PR260 electric motor protective relay can be easily installed without additional wiring.
Switching module (optional): This module provides additional switching capabilities for specific applications.
Display module (optional): This display module (HMI) utilizes a dot matrix LCD and highlighted indicator lights to clearly show operating status and data. It offers a visual interface for monitoring the motor's status and parameters. With the connecting cables, it can easily be connected to the main control module.
* Panel mounting HMI unit and Din-rail mounting control module
* Suitable for Motor under 0.66KV and any current range
* HMI unit provide 3-phase current voltage monitors, Power Measurement
* Control unit use .../5A CT connect
* Abundant protection modes can be freely selected to alarm or trip
* Can select a variety of startup modes for different wiring application
* 100 lists Waveform capture function, easy to trace back the fault
* RS-485 network communications
* 4 digital outputs, and 7 digital inputs
* Optional 2 programmable analog output
* Extra optional Modular:
PR-26C extra 2* RS485 or 2* Profibus-DP port;
PR-265 extra programmable 11*DI and 6*DO.


Our economical & reliable Multifunction motor protection relay has up to 21 motor protection functions, including current imbalance, over current, under current, current leakage, overcurrent stall, Phase unbalance, Reverse Phase, phase failure, ground fault, short circuit, overload, under load, start overtime, jam in starting, under power, external failure, over temperature, over-voltage, under voltage, abnormal frequency, abnormal power factor, restart, tE protection, overflow failure, Lock or Stall, etc. Moreover, Moreover, each motor protection function is capable of realizing shutdown, alarm, or tripping.
The PR260 electric motor protection relay offers high-accuracy metering and monitoring for power (active power, reactive power, apparent power), voltage (phase voltage, sequence voltage, line voltage, etc), current (over current, under current, phase current, sequence current, lock current, ground current), Earth Fault, frequency, energy, and Power Factor, etc. The relay for motors stores the latest 100 event records for measuring data.


The PR260 electric motor protection relay offers various communication options like Two Wire RS485, Profibus, and Ethernet ports. Thus, it supports a wide range of industry-standard protocols, including Modbus RTU, Modbus TCP, IEC61850, Profibus, and EtherNet/IP. In summary, equipped with communication modular and I/O modular, PR260 is a versatile motor protection relay that offers robust networking capabilities, supports multiple protocols, and can be easily integrated into various industrial automation systems.
Electrical parameters
Power supply: | 85-265V AC/DC |
Power consumption: | <10 VA |
Insulation resistance: | > 100MΩ |
Alarm relay | 5A @ 250VAC, or 5A @ 30VDC (NO contact) |
Measuring accuracy
Current: | ± 0.5% @ 10%~200% of Ie |
Voltage: | ± 0.5% @ 10%~150%Ue |
Frequency: | ± 0.1% @ 45~65Hz |
Power factor: | ± 1.0% @ 0~1.000 |
Power: | ± 1.0% @ 0~500kW |
Leakage current: | ± 1% @10%~100% of Ir |
Thermal resistance: | ± 1% @0.1K~30K |
Working environment
Motor rated voltage: | AC380V / AC660V |
Motor rated current: | 0.5-820A |
Working temperature: | -10C ~ +55°C |
Storage temperature: | -25C ~ +70°C |
Relative humidity: | < 93% RH |
Altitude: | No more than 3000 m |
Atmospheric conditions: | The operating place must not have an explosive medium and contain Gases that corrode metals and damage insulating and conductive medium. |
Electrostatic discharge: | IEC 61000-4-2, Level III |
Electrical fast transient burst: | IEC 61000-4-4, Level III |
Surge shock: | IEC 61000-4-5 , Level III |
Withstanding voltage: | IEC 61010-1, AC2kV/1min Between power / input / output |
Product standards
GB / T 14048.1 (IEC 60947-1) | Low-voltage switchgear and control equipment General Provisions |
GB / T 14048.4 (IEC 60947-4) | Low-voltage electromechanical contactors and motor starters requirements |
JB / T 10613-2006 | General specification for digital motor combined protection equipment |
JB / T 10736-2007 | Low-voltage motor protection |




