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JCB3-63DC Miniature Circuit Breaker 1000V DC

MCB

JCB3-63DC Miniature Circuit Breaker 1000V DC

Miniature circuit breakers for use with DC voltages. Idea for communication systems and pv DC systems.

Exclusive design for your safety!
Short circuit and overload protection
Breaking capacity up to 6kA
With contact indicator
Rated current up to 63A
Rated voltage up to 1000V DC
1 Pole, 2 Pole, 3 Pole , 4 Pole are available
Comply with IEC 60898-1

    Introduction

    JCB3-63DC miniature DC circuit breaker is designed for solar / photovoltaic PV system, energy storage and other direct current DC applications.They are mainly placed between batteries and hybrid inverters.
    JCB3-63DC DC circuit breaker provides scientific arc extinguishing and flash barrier technology to fulfill quick and safe current interruption.
    JCB3-63DC DC circuit breaker is a protective device equipped with both a thermal and an electromagnetic release that is available in 1 pole ,2pole, 3 pole and 4 pole versions. The switching capacity is 6kA according to IEC/EN 60947-2. The DC rated voltage is 250V per pole, rated voltage up to 1000V DC.
    JCB3-63DC circuit breaker is available with rated currents of 2A to 63A.
    JCB3-63DC dc circuit breaker offer new features, better connection, superior performance and increased levels of security. Its breaking capacity is up to 6kA.
    JCB3-63DC dc circuit breaker can be locked (by a padlocking device) in OFF position as a safety measure for removal of the PV inverter
    Since a fault current can flow in the reverse direction to the operating current, the JCB3-63DC Circuit breaker can detect and protect against any bidirectional current. To ensure the safety of the installation, it is necessary, depending on the various types of application, to combine the circuit breaker with:
    • a residual current device at the AC end,
    • a fault passage detector (insulation monitoring device) at the DC end
    • an earth protection circuit breaker at the DC end
    In all cases, fast action on site will be required to clear the fault (protection not ensured in the event of a double fault).WANLAI JCB3-63DC dc Circuit breakers are not polarity sensitive: (+) and (-) wires can be inversed without any risk. The circuit breaker is: delivered with three inter-pole barrier to provide increased isolation distance between two adjacent connectors

    Product Description

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    The most important features

    The JCB3-63DC circuit breaker for DC applications has a range of important features that make it a reliable and versatile choice for a variety of systems. Its non-polarized, easy-to-wire design simplifies installation and maintenance, while its high voltage rating of up to 1000V DC ensures compatibility with a wide range of applications.
    The JCB3-63DC circuit breaker has a rated switching capacity of 6 kA (in compliance with IEC/EN 60947-2), an insulation voltage Ui of 1000V, and a rated impulse withstand voltage Uimp of 4000V, providing strong protection and durability. Its Class 3 current limiting and highly selective backup fuses further enhance its safety features due to low let-through energy.
    The contact position indicator with red and green lights provides clear visual feedback on the status of the circuit breaker, adding extra convenience and safety.  JCB3-63DC circuit breakers are available in 1-, 2-, 3- and 4-pole configurations with current ratings up to 63 A, providing the flexibility to meet a variety of system requirements.
    Additionally, its compatibility with PIN or forked standard busbars and its specific design for solar, photovoltaic, energy storage and other DC applications make it a versatile and reliable option for a variety of installations. Together, these features make the JCB3-63DC circuit breaker a comprehensive and reliable solution for DC circuit protection needs.

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    Technical Data

     JCB3-63DC circuit breakers adhere to the highest standards, including IEC60947-2 and EN60947-2, ensuring their reliability and performance. The rated current range is wide, from 2A to 63A, to meet various system requirements. The rated working voltage varies according to the number of poles, including 1P DC250V, 2P DC500V, 3P DC750V, and 4P DC1000V, providing flexibility for different applications.
     It has a rated breaking capacity of 6kA, pollution degree 2 and a rated impulse withstand voltage of 4kV, proving its robustness and ability to withstand harsh conditions.  JCB3-63DC circuit breaker has B-curve and C-curve thermal magnetic release characteristics to meet different usage needs.
     With a mechanical life of 20,000 operations and an electrical life of 1500 operations, this circuit breaker offers long-term reliability and durability. Its protection level is IP20 and the ambient temperature range is -5℃ to +40℃, ensuring that it is suitable for a wide range of environments.
     Contact position indicators, green for closed and red for open, provide clear visual feedback on the status of the circuit breaker. Terminal connection types include cable and pin busbars for flexible installation. The circuit breaker can be easily mounted on DIN rail EN 60715 (35mm) using a quick clamp device with a recommended torque of 2.5Nm, ensuring safe and efficient installation.

    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 10 kA
    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, 5, 6, 10,13, 16, 20, 25, 32,40, 50, 63, 80
    Thermo-magnetic release characteristic B, C, D 8-12In, 9.6-14.4In

    Mechanical features

    Electrical life 4, 000
    Mechanical life 20, 000
    Contact position indicator Yes
    Protection degree IP20
    Reference temperature for setting of thermal element(℃) 30
    Ambient temperature (with daily average ≤35℃) -5...+40
    Storage temperation (℃) -35...+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
    with
    accessories

    Auxiliary contact Yes
    Shunt release Yes
    Under voltage release Yes
    Alarm contact Yes
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    Reliable cable protection

    MCBs protect cables against damage due to overload and short circuits: In the event of dangerously high currents, the circuit breaker’s bimetallic thermal release will disconnect the power supply. In the event of a short circuit, the electromagnetic release will disconnect the power supply in a timely manner

    MCCB Production Line Real Showing

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