Circuit Breaker Ratings
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What about the release device and the contactor and the circuit breaker?
- and undervoltage failure can automatically cut off the circuit, its function is equivalent to the fuse switch And a combination of overheat relays and the like.s
How does the contactor works
- The working principle of the DC contactor is somewhat similar to the principle of the temperature switch.s
Contactor accessories have what roles?
- electromagnetic system, including the attracting coil, moving core and static cores
AC contactor technology development
- Semiconductor contactor: The semiconductor contactor is a contactor that performs current operation by changing the conduction state and the open state of the circuit circuit.s
What is the use of AC contactors?
- Second: First, we should know the principle of AC contactor. He is using external power to the coil, resulting in electromagnetic fields.s
Why should the thermal relay be used with the AC contactor
- When the push button SB2 is pressed, the AC contactor coil KM is energized and its main contact is closed, so that the motor is started and the auxiliary contact is closed from the self-locking action.s
How to choose the contactor
- for example, the circuit current is 218A, the 250A contactor should be selecteds
Permanent magnet AC contactor working principle
- Permanent magnet AC contactor is the use of the magnetic pole of the same-sex repulsion, the opposite sex suction principle,s
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