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Porcelain knife switch, as the name suggests is to use the electromagnet to control the switch, which is the combination of the electromagnet and switch. When the solenoid coil is energized electromagnetic suction activities core to push or pull the switch contacts closed, thereby turning on the control circuit. The porcelain knife switch has a wide application in various industries, the most common is the contact of industrial fields.
If there are no special instructions, the Porcelain knife switch is a control switch on the automotive starter, is one of the three major components of the starter (DC motor, drive engagement mechanism, electromagnetic switch), its working principle is the electromagnetic force generated in the coil is energized, the activity Rail The core movement, thereby pulling the drive engagement mechanism on the one hand so that the starter pinion forward with the engine flywheel ring gear, on the other hand push the Porcelain knife switch contact is turned on, the DC motor is energized to operate, so as to drive the engine starter.