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    The working principle of MCCB
    The working principle of MCCB
    Time£º2015-6-4 20:51:48      Click£º139
    The working principle of MCCB
    The main contact of low-voltage circuit breaker is by manual operation or electric switch. The main contacts are closed, free trip will lock in the closing position on the main contacts. A heat element of the current release of the coil and heat release with the main circuit in series, under voltage tripping coil and power supply in parallel.
    When the short circuit occurred or severe overload, over current tripping device attracted armature, free tripping mechanism of action and the main contact breaking away from the main circuit.
    When the circuit overload, heat release heat heating element the double sheet metal bending, and promote free tripping mechanism of action, the main contact broken away from the main circuit.
    When the circuit undervoltage, owe armature voltage release, release, also make free tripping mechanism of action, the main contact broken away from the main circuit.
    When the press shunt tripping button, shunt release attracted armature and make free tripping mechanism of action, main contact broken away from the main circuit. Http://www.dhen.cc/

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