ABB 1SDA066431R1 Molded Case Circuit Breaker

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• 1. Product Overview

  The ABB 1SDA066431R1 is a high-reliability molded case circuit breaker (MCCB) designed for low-voltage power distribution systems. It provides effective overload and short-circuit protection as well as safe isolation of electrical circuits, ensuring reliable operation of equipment and installations in industrial and commercial environments.

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  2. Main Technical Specifications (Typical)

  • Model: 1SDA066431R1

  • Product Type: Molded Case Circuit Breaker (MCCB)

  • Rated Operational Voltage: AC 690 V

  • Rated Insulation Voltage: Ui 800 V (typical)

  • Frequency: 50 / 60 Hz

  • Rated Current: According to configuration

  • Number of Poles: 3-pole / 4-pole (depending on version)

  • Trip Unit Type: Thermal-magnetic or electronic

  • Overload Protection: Long-time inverse-time protection

  • Short-Circuit Protection: Instantaneous tripping

  • Breaking Capacity: High breaking capacity for industrial applications

  • Operation: Manual operation (motor operator optional)

  • Mounting: Fixed mounting

  • Degree of Protection: IP20 (terminals)

  • Ambient Temperature: -25 ℃ to +70 ℃

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  3. Advantages and Features

  • Reliable Protection for Circuits and Equipment
    Accurate overload and short-circuit protection enhance system safety.

  • High Breaking Capacity
    Ensures safe interruption of fault currents.

  • Robust and Durable Design
    Suitable for long-term operation in industrial environments.

  • Flexible Accessories
    Supports auxiliary contacts, shunt trip, undervoltage release, and other accessories.

  • Compliance with International Standards
    Designed for general low-voltage distribution applications.

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  4. Applications

  • Industrial low-voltage distribution systems

  • Feeder and motor circuit protection

  • Manufacturing plants and factories

  • Commercial buildings and public facilities

  • Energy, power, and infrastructure projects

  • Control panels and distribution boards

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  5. Precautions for Installation and Use

  • Verify that the breaker ratings match system requirements before installation

  • Ensure all terminals are properly tightened to avoid overheating

  • Do not operate beyond rated voltage, current, or breaking capacity

  • Periodically inspect the tripping and operating mechanisms

  • Installation and maintenance should be performed by qualified personnel

  • Avoid installation in environments with excessive dust, moisture, or corrosive gases

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The structure and details of the product：

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