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JCB3-80M Miniature Circuit Breaker 6kA


JCB3-80M Miniature Circuit Breaker 6kA

The JCB3-80M miniature circuit breaker is designed to provide reliable protection in a variety of environments, including domestic, commercial and industrial installations. These circuit breakers provide short circuit and overload protection with a breaking capacity of 6kA, ensuring the safety of electrical systems and equipment. The inclusion of a contact indicator enhances ease of monitoring and maintenance. Additionally, the product's flexibility is reflected in its availability in various configurations, ranging from 1A to 80A, with 1-, 2-, 3- and 4-pole options. In addition, the choice of B, C or D curves provides further customization to meet specific application requirements. Importantly, these circuit breakers comply with international standard IEC 60898-1, ensuring their reliability and compliance with industry regulations.


    JCB3-80M miniature circuit breakers are carefully designed to protect electrical installations from overloads and short circuits, ensuring continued reliability and safety under a wide range of operating conditions. These MCBs comply with the stringent standards of IEC 60898-1 and EN 60898-1, underscoring their commitment to quality and compliance. This comprehensive range of MCBs caters for a wide range of applications from domestic to small commercial and industrial environments. Whether it is a home, office or industrial facility, the JCB3-80M circuit breaker plays a key role in enhancing electrical safety by protecting the installation from overloads and short circuits.

    The JCB3-80M MCB features a powerful 6kA short circuit breaking capacity and DIN rail mounting for versatility and flexibility. Additionally, the availability of B, C and D curve options allows precise customization to meet specific requirements.  The B curve can cut off the circuit when the current exceeds 3-5 times the actual current, making it an ideal choice for cable protection. At the same time, the C-curve, which is triggered when the current exceeds 5-10 times the actual current, is used in household and commercial appliances such as transformers, fluorescent lighting circuits, and IT equipment. The D-curve, on the other hand, has high resistance and activates when the current exceeds 10-20 times the actual current, making it ideal for motor applications.

    The JCB3-80M MCB also features a positive indication of open or closed, and the operating switch can be locked in either position without affecting the operation of the trip mechanism. In addition, the MCB has a 4mm contact gap in the closed position, enabling it to be used as a single-pole isolating switch when necessary.  The shell of JCB3-80M is made of flame-retardant and environmentally friendly materials, with a flame-retardant rating of up to V1, ensuring safety and sustainability.

    These miniature circuit breakers can automatically open circuits under abnormal and fault conditions, effectively preventing damage. A short circuit trip causes the operating knob to be in the closed position, allowing for easy detection of defective areas in the circuit. In addition, quick recovery of the miniature circuit breaker is facilitated through simple operation, ensuring minimal downtime and quick recovery.

    JCB3-80M MCB is an ideal choice for home circuit protection, capable of detecting overcurrent caused by overloads and faults, and interrupting power supply in time to prevent damage to devices and equipment.

    Product Description


    The JCB3-80M circuit breaker offers a comprehensive range of features and functions, making it an indispensable component in electrical installations. With a breaking capacity of up to 6kA, these circuit breakers provide strong short-circuit and overload current protection, ensuring the safety and reliability of electrical systems. Contains contact indicators, green for "off" and red for "on", for enhanced visibility and easy monitoring.

    The JCB3-80M circuit breaker has a high nominal current range of up to 80A, making it suitable for a wide range of applications. Their availability in 1-, 2-, 3- and 4-pole configurations and B, C or D curves provides flexibility and customization to meet specific requirements. Additionally, its 35mm Din rail mounting ensures optimal ease of installation and connection, further enhancing its practicality and efficiency.

    Functionally, these circuit breakers serve a variety of purposes, including protecting circuits from short circuits and overload currents, acting as switches, and providing isolation when necessary. Their versatility and reliability make them ideal for use in home installations as well as commercial and industrial power distribution systems.

    When selecting a suitable JCB3-80M circuit breaker, it is crucial to consider the technical data of the installation point network. This includes evaluating the short-circuit current at the grounding system (TNS, TNC), at the point where the circuit breaker is installed, and ensuring that it is always less than the breaking capacity of the equipment and the normal voltage of the network.

    These circuit breakers provide tripping curves that provide tailored protection for each situation.  Curve B provides protection for personnel and long cables in TN and IT systems, Curve C provides protection for resistive and inductive loads with low inrush currents, Curve D provides protection for circuits supplying loads at high inrush currents at low voltage / The closing of circuits such as low-voltage transformers and fault lights demonstrates the adaptability and precision of JCB3-80M circuit breakers in meeting different application requirements.


    Technical Data

    ● Standard: IEC 60898-1, EN 60898-1

    ● Rated current: 1A, 2A, 3A, 4A, 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A,80A

    ● Rated working voltage: 110V, 230V ~ (1P, 1P + N), 400V ~ (2 ~ 4P, 3P + N)

    ● Rated breaking capacity: 6kA

    ● Insulation voltage: 500V

    ● Rated impulse withstand voltage(1.2/50) : 4kV

    ● Thermo- magnetic release characteristic: B curve, C curve, D curve

    ● Mechanical life: 20,000 times

    ● Electrical life: 4000 times

    ● Protection degree: IP20

    ● Ambient temperature (with daily average ≤35℃):-5℃~+40℃

    ● Contact position indicator: Green=OFF, Red=ON

    ● Terminal connection type:Cable/U-type busbar/Pin-type busbar

    ● Mounting: On DIN rail EN 60715 ( 35mm) by means of fast clip device

    ● Recommended torque: 2.5N.m

    ● Combination with accessories: Auxiliary contact,Shunt release,Under voltage release, Alarm contact

      Standard IEC/ EN 60898- 1  IEC/ EN 60947- 2
    Electrical features Rated current In ( A) 1, 2, 3, 4, 6, 10, 16, 20, 25, 32, 40, 50, 63, 80
    Poles 1P, 1P+ N, 2P, 3P, 3P+ N, 4P 1P, 2P, 3P, 4P
    Rated voltage Ue( V) 230/ 400~ 240/ 415
    Insulation voltage Ui ( V) 500
    Rated frequency 50/ 60Hz
    Rated breaking capacity 6kA
    Energy  limiting class 3  
    Rated impulse withstand voltage( 1. 2/ 50) Uimp ( V) 4000
    Dielectric test voltage at ind. Freq. for 1 min ( kV) 2
    Pollution degree 2
    Power  loss  per pole Rated  current  ( A)
    1, 2, 3, 4, 6, 10, 16, 20, 25, 32, 40, 50, 63, 80
    Thermo- magnetic release characteristic B, C, D 8- 12In, 9. 6- 14. 4In
    Mechanicalfe atures Electrical life 4,000
    Mechanical life 20,000
    Contact position indicator Yes
    Protection degree IP 20
    Reference temperature for setting of thermal element(℃) 30
    Ambient temperature ( with daily average ≤35℃) - 5...+40 ℃
    Storage temperation (℃) -25...+ 70 ℃
    Installation Terminal connection type Cable/ U- type busbar/ Pin- type busbar
    Terminal size top/ bottom for cable 25mm2 / 18- 4 AWG
    Terminal size top/ bottom for busbar 10mm2 / 18- 8 AWG
    Tightening torque 2. 5 N* m / 22 In- Ibs.
    Mounting On DIN rail EN 60715 ( 35mm) by means of fast clip device
    Connection From  top  and bottom
    Combination withaccessori es Auxiliary contact Yes
    Shunt release Yes
    Under voltage release Yes
    Alarm contact Yes

    MCCB Production Line Real Showing

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