ABB REM630 Motor Protection Relay

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• 1. Product Overview

  ABB REM630 Motor Protection Relay is an intelligent protection device for low-voltage and medium-voltage motors, providing comprehensive motor protection including overload, phase loss, jam, short-circuit, over/under voltage, and temperature rise protection.

  REM630 can seamlessly integrate with ABB MCCBs, contactors, and automation systems, enabling motor condition monitoring, remote control, and fault alarms. The relay features digital interfaces, LCD display, and parameterization to enhance motor safety and system reliability. Suitable for industrial production lines, pump stations, fans, water treatment, elevators, and infrastructure motor protection.

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  2. Main Technical Data

  General

  • Product type:
    Motor Protection Relay

  • Applicable motor rated current:
    0.1–630 A (depending on model/configuration)

  • Poles:
    3-phase

  • Control voltage:
    24–240 V AC/DC

  • Protection functions:
    Overload, phase loss, jam, short-circuit, over/under voltage, temperature rise

  • Display interface:
    LCD display for parameter settings and fault indication

  • Communication interface:
    Modbus RTU, Profibus, DeviceNet, Ethernet/IP (optional)

  Electrical Characteristics

  • Response time:
    Overload protection ≤ 1 s (typical)

  • Reset method:
    Manual / Automatic (configurable)

  • Accuracy:
    ±2% rated current measurement

  Mechanical & Environment

  • Mounting:
    DIN rail or panel

  • Housing:
    Industrial-grade flame-retardant plastic

  • Operating temperature:
    -20°C to +60°C

  • Protection rating:
    IP20 (standard installation)

  Standards & Certification

  • Compliance:
    IEC 60947-4-1, IEC 60255, EN 60255

  • Operating environment:
    Industrial automation, power systems, and motor control

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  3. Key Advantages and Features

  1. Comprehensive motor protection
     Provides overload, jam, phase loss, short-circuit, over/under voltage, and temperature rise protection.

  2. Digital control and display
     LCD interface clearly shows motor status and fault information.

  3. Flexible reset modes
     Supports manual or automatic reset for operational convenience.

  4. Adjustable parameters
     Start current, delay, and alarm settings can be adjusted to match motor characteristics.

  5. Rich communication interfaces
     Supports Modbus, Profibus, Ethernet/IP for remote monitoring and automation integration.

  6. Industrial-grade reliability
     Strong interference immunity and robust design for harsh environments, extending motor life.

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  4. Typical Applications

  • Industrial plant and production line motor protection

  • Water pumps, fans, and compressors

  • Elevators and conveyor systems

  • Low-voltage motors in power and distribution systems

  • Water and wastewater treatment plants

  • Automation and infrastructure motor protection

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  5. Installation and Application Notes

  1. Verify motor rated current
     Ensure REM630 rated current matches the motor before installation to prevent nuisance tripping.

  2. Correct wiring and configuration
     Follow wiring diagrams for input/output terminals and configure parameters to match motor characteristics.

  3. Environmental conditions
     Avoid humidity, high temperature, dust, and corrosive gases; ensure proper ventilation and heat dissipation.

  4. Reset operation
     After a trip, confirm fault clearance before resetting to ensure motor safety.

  5. Periodic inspection and maintenance
     Regularly check relay display, terminal tightness, and communication status to ensure long-term stable operation.

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The structure and details of the product：

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