Leave Your Message

10KA Miniature Circuit Breaker TDM3-125

The Talemod TDM3-125 miniature circuit breaker is primarily used for overload and short-circuit protection of power lines and electrical equipment within buildings. It also enables infrequent circuit switching under normal power supply conditions. This circuit breaker is suitable for distribution systems with a rated voltage of 240/415V, an AC frequency of 50/60Hz, and a rated current up to 125A. Its rated short-circuit breaking capacity reaches 6kA. Featuring a modular design and compliant with the IEC60947-2 standard, it offers reliable performance, precise protection, and a compact design. It is widely applicable to lighting distribution systems in industrial and commercial sectors.

    Technical Data

    Standard IEC60947-1
    Rated current (In) 406380100125A
    Poles 1P2P 3P4P
    Rated voltage(Ue) 1P:240/415V~ 2/3/4P:415~
    Insulation voltage(Ui) 500V
    Rated frequency 50/60Hz
    Rated breaking capacity(Icn) 6KA/10KA
    Rated operating short circuit breaking capacity (lcs) 6KA/7.5KA
    Energy limiting class 3
    Tripping curve C D
    Electrical and Mechanical life  8000

    Overload Current Protection Characteristics

    Rated Current
    (A)
    Test
    Procedure
    Test Current Initial State Tripping or Non-riping
    Time Limit
    Expected Result Remark
    80A
    100A
    125A
    A 1.05In cold t≤2h no tripping
    B 1.3ln After testA t≤2h The current steadily nise to thespecified value within 5s
    C 2.55In cold 1s<t<120s tripping
    D 8ln cold t≤0.2s no tripping Turn on the
    auxiliary switch to close the current
    12ln t<0.2s tripping

    未标题-1.jpg

    Installation

    Protection degree IP20
    Reference temperature for setting of thermal element 30℃
    Ambient temperature -25~+40℃
    Storage temperature -25~+70℃
    Terminal connection type Cable/Pin -type busbar
    Terminal size top/bottom for cable 50mm²
    Tightening torque 3.5N.m
    Connection   Top and bottom

    Combination with accessories

    Auxillary contact YES
    Alarm contact YES
    Shunt release NO
    Under voltage release NO

    Overall and mounting dimensioned chart

    未标题-2.jpg

    Product Overview

    A 125A miniature circuit breaker (MCB) is a critical protection device used in electrical distribution systems, specifically designed for high-current circuits. It integrates dual functions of overload protection and short-circuit protection. When the current in the circuit exceeds the rated value (e.g., due to overload) or experiences a severe short-circuit fault, it can quickly and reliably automatically cut off the power supply, effectively preventing conductor overheating, equipment damage, and electrical fire hazards.

    Key Features

    The core function is clear: it is mainly used for overload and short-circuit protection of power lines and electrical equipment in buildings. At the same time, it can realize non-frequent on-off operations of circuits under normal power supply conditions, taking into account protection and basic control needs.
    Clear adaptation system parameters: Applicable to power distribution systems of specific specifications. Specific parameters are as follows:
    Rated voltage: 240/415V
    AC frequency: 50/60Hz
    Rated current: up to 125A
    Rated short-circuit breaking capacity: 6KA, can effectively deal with short-circuit faults and ensure system safety.
    Excellent design and compliance: The modular design facilitates installation, maintenance, and expansion. It complies with the IEC60947-2 standard, meeting international safety and performance specifications, and its product quality is supported by clear standards.
    Outstanding performance and structural advantages: It has reliable operating performance, high protection accuracy, can accurately identify faults such as overload and short circuit and take timely action; at the same time, it has a compact structure, saving installation space.
    Wide range of application scenarios: With the above characteristics, it is widely applicable to lighting distribution systems in industrial and commercial fields and has strong adaptability.

    Creating a New Chapter in Smart Electrical Partnerships

    • Submit your needs for a tailored electrical solution
    • A decade of technical expertise, 24/7 rapid response
    • Every electrical challenge you face sparks our innovation

    Send An Inquiry