ABB 1SDA054412R1 Molded Case Circuit Breaker

• 1. Product Overview

  ABB 1SDA054412R1 Molded Case Circuit Breaker is a low-voltage protective switching device designed for power distribution systems. It provides reliable overload protection, short-circuit protection, and circuit isolation for electrical installations.

  With its modular design and proven tripping technology, this MCCB ensures safe and stable operation in industrial, commercial, and infrastructure applications.

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  2. Main Technical Data

  General

  • Product type:
    Molded Case Circuit Breaker (MCCB)

  • Rated operational voltage:
    Low-voltage AC systems (typically 400 / 415 / 440 / 690 V AC)

  • Rated frequency:
    50 / 60 Hz

  • Number of poles:
    3-pole (depending on configuration)

  Current Ratings and Breaking Capacity

  • Rated current In:
    Medium current range (depending on trip unit configuration)

  • Ultimate short-circuit breaking capacity Icu:
    High breaking capacity suitable for industrial distribution systems

  • Service short-circuit breaking capacity Ics:
    According to IEC standard ratios

  Protection Functions

  • Overload protection:
    Long-time thermal protection (fixed or adjustable)

  • Short-circuit protection:
    Instantaneous or short-time magnetic tripping

  • Trip unit type:
    Thermal-magnetic or electronic (depending on model)

  Mechanical and Electrical Characteristics

  • Operating mechanism:
    Manual operation with accessory support

  • Mechanical life:
    Designed for frequent industrial operation

  • Electrical life:
    Suitable for long-term low-voltage distribution use

  Installation and Construction

  • Mounting:
    Fixed mounting

  • Connection:
    Front or rear connection (depending on configuration)

  • Housing material:
    High-strength insulated material

  • Protection:
    Suitable for installation inside distribution boards

  Standards and Compliance

  • Standards:
    IEC / EN 60947-2

  • Application environment:
    Industrial and commercial electrical installations

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  3. Key Advantages and Features

  1. High Breaking Capacity
     Safely interrupts high short-circuit currents.

  2. Comprehensive Protection
     Provides both overload and short-circuit protection.

  3. Compact Modular Design
     Easy integration into distribution systems.

  4. Reliable and Stable Operation
     Suitable for continuous duty and harsh environments.

  5. Flexible Accessories
     Supports shunt trips, undervoltage releases, and auxiliary contacts.

  6. International Standard Compliance
     Suitable for global low-voltage distribution projects.

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  4. Typical Applications

  • Industrial power distribution systems

  • Low-voltage switchboards and panels

  • Manufacturing and production lines

  • Commercial buildings and public facilities

  • Infrastructure and energy projects

  • Power plants and substation LV systems

  • Data centers and critical load distribution

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  5. Installation and Application Notes

  1. Correct selection
     Select the breaker according to system voltage, current, and short-circuit level.

  2. Proper installation
     Install in accordance with low-voltage electrical installation standards.

  3. Secure connections
     Tighten terminals to the specified torque to prevent overheating.

  4. Accessory compatibility
     Use approved accessories to ensure reliable performance.

  5. Periodic inspection
     Regular inspection of operation and wiring is recommended.

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The structure and details of the product：

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