ABB 2CDS251001R0101 Miniature Circuit Breaker

• 1. Product Overview

  ABB 2CDS251001R0101 Miniature Circuit Breaker is a high-performance protective device for low-voltage distribution systems, providing overload, short-circuit protection and circuit isolation.

  It uses a thermal-magnetic trip mechanism to quickly disconnect power in the event of overload or short-circuit, ensuring electrical safety and system stability. The compact design and ease of installation make it suitable for residential, commercial, and industrial low-voltage applications.

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  2. Main Technical Data

  General

  • Product type:
    Miniature Circuit Breaker (MCB)

  • Poles:
    1

  • Rated current In:
    1 A

  • Rated operational voltage:
    230/400 V AC

  • Frequency:
    50/60 Hz

  • Trip characteristic:
    Type B (for general lighting and household circuits)

  Protection Features

  • Overload protection:
    Thermal trip for sustained overload

  • Short-circuit protection:
    Magnetic trip for rapid response to short circuits

  • Breaking capacity:
    6 kA (typical, meets LV distribution standards)

  Mechanical and Installation

  • Operation:
    Manual ON/OFF

  • Mounting:
    35 mm DIN rail

  • Housing material:
    Flame-retardant high-strength plastic

  • Protection rating:
    IP20 (for panel mounting)

  Standards and Certification

  • Standards:
    IEC/EN 60898-1 / GB 10963.1

  • Operating environment:
    Suitable for residential, commercial, and light industrial environments

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  3. Key Advantages and Features

  1. Reliable overload and short-circuit protection
     Ensures safe operation of electrical systems and equipment.

  2. Compact size and easy installation
     DIN rail mounting saves distribution panel space.

  3. High breaking capacity
     Safely interrupts short-circuit currents, protecting circuits and devices.

  4. Thermal-magnetic trip design
     Fast response to short-circuits, delayed response to overload, prolonging equipment life.

  5. Industrial-grade material
     Flame-retardant plastic housing, resistant to high temperature and mechanical impact.

  6. International standard compliance
     IEC/EN/GB certified, reliable for global applications.

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  4. Typical Applications

  • Residential and apartment electrical distribution

  • Commercial building lighting and power systems

  • Light industrial load control and distribution

  • Data centers and office building LV distribution

  • Small equipment protection and automation control panels

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  5. Installation and Application Notes

  1. Verify rated current
     Select the rated current according to the load of the circuit.

  2. Correct wiring
     Ensure correct connection of live and neutral wires, tighten terminals properly.

  3. Avoid overload
     Do not exceed rated current for prolonged periods to maintain breaker life.

  4. Environmental requirements
     Avoid moisture, high temperature, and corrosive gases.

  5. Periodic inspection
     Regularly check breaker status and operational reliability.

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The structure and details of the product：

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