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Frame Size 63L/M 100L/M re-buckle

MCCB Assembly Components

Frame Size 63L/M 100L/M re-buckle

The tripping device is a key safety component in the plastic case circuit breaker (MCCB), which is directly related to the reliability and accuracy of circuit protection. Its core function is to monitor abnormal current in the circuit and quickly cut off the circuit in dangerous situations such as overload or short circuit to prevent damage to electrical equipment and the occurrence of electrical fires.

    product description

    Specifically, the trip unit functions and has an important impact in the following ways:
    Overload protection: The thermal tripper operates due to heat accumulation when the current in the circuit exceeds a predetermined safety threshold, usually due to prolonged overload. It uses the thermal expansion of the metal sheet to push the mechanical structure, thereby breaking the circuit and preventing the wire from overheating and insulation damage.
    Short circuit protection: The electromagnetic release is highly sensitive to transient large currents in the circuit. If a short circuit occurs, the current increases. Once this abnormal current is detected, the electromagnetic force increases rapidly and immediately drives the mechanical mechanism to trip the circuit breaker, quickly cutting off the fault current and reducing the impact on other parts of the system.
    Selective protection: In a multi-level protection system, molded case circuit breakers at different locations are installed with corresponding coordinated tripping characteristics to ensure that when a fault occurs, the circuit breaker closest to the fault point will be tripped first, and the circuit breaker of the upper level will be tripped first. Then it will trip first. Stay closed to minimize the scope of power outages and improve system stability and reliability.
    Adjustable protection: Many molded case circuit breakers allow users to adjust the settings of the tripper according to actual needs, such as adjusting the delay time or current threshold of overload protection through a knob, thereby providing more precise protection for equipment with different load characteristics.
    In summary, as the core control component of the molded case circuit breaker, the tripper not only ensures the safe operation of the circuit, but also improves the flexibility and efficiency of the power system through its intelligent design, ensuring the normal operation of electrical equipment. and personnel safety. personnel. Important guarantee.

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