MOLD CASED CIRCUIT BREAKER HAVING A TRIP MECHANISM USING A GAS PRESSURE AND A MAGNETIC FORCE, CAPABLE OF REDUCING TRIGGERING TIME FOR OPERATING A TRIP OF AN OPENING/CLOSING DEVICE

摘要

PURPOSE: A mold cased circuit breaker having a trip mechanism using a gas pressure and a magnetic force is provided to perform triggering in rapid by using a magnetic force and a gas pressure.;CONSTITUTION: A single pole breaking unit comprises a movable contact(2), a fixed contact(1a,1b), and an exhaust pipe of an arc gas. An Opening and closing device(20) supplying a driving force for moving the movable contact to a closing point and an opening point. The magnetic core(21) generates magnetic force while an abnormal current is generated in a circuit. A trip mechanism is driven by the arc gas pressure and the magnetic force. The trip mechanism the opening and closing device to the opening point.;COPYRIGHT KIPO 2010