ABB 1SDA038313R1 Voltage release circuit breaker

• 1. Product Overview

  The ABB 1SDA038313R1 is a voltage release device (undervoltage release) designed for ABB circuit breakers. It automatically trips the breaker when the control voltage drops below a specified level or is lost, providing effective protection for electrical systems and connected equipment.

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  2. Main Technical Specifications (Typical)

  • Model: 1SDA038313R1

  • Product Type: Voltage Release / Undervoltage Release

  • Applicable Devices: ABB molded case circuit breakers or air circuit breakers (depending on configuration)

  • Rated Control Voltage: AC / DC (multiple voltage ratings available)

  • Frequency: 50 / 60 Hz (AC)

  • Operating Principle: Automatic tripping upon voltage drop or power loss

  • Installation: Internal or modular accessory mounting

  • Reliability: Industrial-grade design

  • Mechanical Life: Coordinated with circuit breaker lifetime

  • Ambient Temperature: -25 ℃ to +70 ℃

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  3. Advantages and Features

  • Automatic Protection Against Voltage Loss
    Trips the circuit breaker immediately in case of undervoltage or power failure.

  • Perfect Compatibility with ABB Circuit Breakers
    Designed specifically for ABB breaker series, ensuring easy installation and reliable operation.

  • Modular Design
    Simple integration and convenient maintenance.

  • High Reliability and Stability
    Built with industrial-grade components for long-term operation.

  • Enhanced Safety for Personnel and Equipment
    Prevents unsafe operation under abnormal voltage conditions.

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  4. Applications

  • Industrial low-voltage distribution systems

  • Power protection for automated production lines

  • Motor feeders and critical equipment circuits

  • Building electrical distribution systems

  • Energy, power, and infrastructure projects

  • Applications requiring undervoltage protection

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  5. Precautions for Installation and Use

   

  • Ensure full compatibility with the selected ABB circuit breaker model

  • Verify that the control voltage matches the rated specifications

  • Ensure secure wiring to prevent malfunction due to loose connections

  • After tripping, normal control voltage must be restored before reclosing

  • Installation and commissioning should be performed by qualified personnel

  • Perform regular inspections of control circuits and accessories

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The structure and details of the product：

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