ABB 1SDA074195R1 Low-voltage circuit breaker

• 1. Product Overview

  ABB 1SDA074195R1 Low-voltage Circuit Breaker is a high-performance, modular MCCB designed for industrial and commercial power distribution systems. It provides overload, short-circuit, and fault protection for main and branch circuits, ensuring equipment and wiring safety while maintaining system continuity and reliability.

  1SDA074195R1 features high breaking capacity, adjustable protection settings, and optional intelligent monitoring interfaces, meeting modern industrial and infrastructure electrical system requirements.

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  2. Main Technical Data

  General

  • Product type:
    Low-voltage Circuit Breaker (MCCB)

  • Poles:
    3 or 4 (model dependent)

  • Rated current:
    125–800 A (depending on model)

  • Rated operating voltage:
    400–690 V AC

  • Breaking capacity:
    25–50 kA (depending on model and rated current)

  • Trip characteristic:
    Thermal-magnetic or electronic trip

  Electrical Characteristics

  • Operating frequency:
    50/60 Hz

  • Protection functions:
    Overload, short-circuit, under/over voltage protection

  • Adjustable trip settings:
    Adjustable thermal trip, adjustable magnetic/instantaneous trip

  • Communication interface (optional):
    Modbus, Profibus, Ethernet/IP for remote monitoring

  Mechanical & Environment

  • Mounting:
    DIN rail or bolt-fixed

  • Dimensions (mm):
    Depends on rated current

  • Housing:
    Flame-retardant plastic and metal

  • Operating temperature:
    -25°C to +60°C

  • Protection rating:
    IP20–IP40 (depends on panel and model)

  Standards & Certification

  • Compliance:
    IEC 60947-2, EN 60947-2, UL 489

  • Operating environment:
    Industrial automation, distribution systems, infrastructure power protection

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  3. Key Advantages and Features

  1. High breaking capacity
     Quickly disconnects fault currents to protect wiring and equipment.

  2. Multi-level protection
     Overload, short-circuit, and under/over-voltage protection improve system reliability.

  3. Adjustable trip settings
     Thermal-magnetic or electronic trip adjustable for different load characteristics.

  4. Modular design
     Flexible installation, extendable and combinable, easy to maintain.

  5. Intelligent monitoring interface
     Supports remote monitoring and control, facilitating power system management.

  6. Industrial-grade durability
     Resistant to high temperature, vibration, and shock for harsh industrial environments.

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  4. Typical Applications

  • Industrial facility power distribution

  • Commercial building main and branch power distribution

  • Substation low-voltage systems

  • Automated production line power protection

  • Data centers and critical infrastructure

  • Wind and solar power plant distribution systems

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  5. Installation and Application Notes

  1. Verify rated current and load compatibility
     Ensure the MCCB rated current matches load and circuit requirements.

  2. Correct wiring and installation
     Fix properly according to manual; ensure terminal connections are tight and reliable.

  3. Environmental conditions
     Avoid moisture, corrosive gases, and extreme temperatures; ensure proper heat dissipation.

  4. Periodic inspection and maintenance
     Test operations regularly, check terminals, trip units, and housing condition.

  5. Follow standard operating procedures
     Installation and maintenance should comply with IEC/EN standards and local electrical codes.

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The structure and details of the product：

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