ABB REU610 AVVHCNN Voltage Relay

• Product Overview

  The ABB REU610 AVVHCNN is a precision voltage relay designed for overvoltage, undervoltage, and abnormal voltage protection in power systems. By monitoring AC voltage variations, it acts quickly when voltage exceeds preset limits, protecting electrical equipment and systems. Compact and fast-acting, it is suitable for installation in control panels, distribution boards, and automation systems.

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  Main Technical Specifications

  • Model: REU610 AVVHCNN

  • Product Type: Voltage Relay

  • Operating Voltage Range: AC 50–400 V

  • Control Voltage: AC/DC 24–240 V

  • Trip Type: Overvoltage, Undervoltage

  • Operating Time: ≤100 ms (typical, adjustable)

  • Contact Type: 1 NO + 1 NC (SPDT)

  • Load Capacity: AC 250 V / 5 A

  • Mounting: DIN rail

  • Operating Temperature: ‑20 ℃ to +60 ℃

  • Standards: IEC/EN 60255

  • Features: Fast response, reliable protection, compact modular design

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  Key Advantages & Features

  1. High-Precision Voltage Detection

     • Accurately monitors system voltage changes for timely over/undervoltage protection.

  2. Fast Response

     • Operating time ≤100 ms, quickly triggers disconnection or alarm to protect critical equipment.

  3. Modular Design

     • DIN rail mount for easy integration into control panels and distribution systems.

  4. High Reliability

     • Industrial-grade design, vibration-resistant, temperature-tolerant, ensures long-term stable operation.

  5. Flexible Application

     • Suitable for various voltage levels and power systems, supporting protection of multiple types of electrical equipment.

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  Typical Applications

  • Distribution system voltage monitoring and protection

  • Industrial automation control panels

  • Motor and drive protection

  • Generator and transformer monitoring

  • Energy management systems

  • Power equipment alarm and safety protection

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  Installation & Operation Notes

  • Voltage Matching: Ensure relay rated voltage matches the monitored supply.

  • Wiring Practices: Follow wiring diagram, ensure reliable contact connection.

  • Environmental Conditions: Avoid humidity, dust, and corrosive environment; maintain ventilation.

  • Operation & Maintenance: Install and configure with power off to prevent electric shock or misoperation.

  • Periodic Inspection: Check relay operation and contact reliability to ensure long-term stable performance.

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The structure and details of the product：

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