Contactor

Abstract

The invention discloses a contactor which is long in service life, safe and reliable. The contactor comprises an insulating housing, a lower fixed iron core, an upper movable iron core, a lower lever mechanism and an upper lever mechanism, wherein the lower fixed iron core is mounted at the bottom of an inner cavity of the insulating housing; a coil is arranged on the lower fixed iron core; the upper movable iron core is mounted on the lower lever mechanism; a return iron core spring is arranged at one end, provided with the coil, of the lower fixed iron core; the lower fixed iron core is connected with the upper movable iron core by the return iron core spring; the upper lever mechanism is connected with the lower lever mechanism; an upper contact is arranged on the upper lever mechanism; a lower contact corresponding to the upper contact is arranged on the inner cavity of the insulating housing; a plurality of contact lead connectors connected with the upper contact and the lower contact are arranged outside the insulating housing; and an oil filler hole is formed at the top end of the insulating housing. The contactor has the benefits that insulating oil is filled from the oil filler hole, so that no spark is generated during contact actuation, the contactor is not oxidized or damaged easily, and can be used permanently, and the service life of the contactor is prolonged greatly.

Description

technical field [0001] The invention relates to the technical field related to power distribution, in particular to a contactor. Background technique [0002] Contactors are divided into AC contactors (voltage AC) and DC contactors (voltage DC), which are used in power, power distribution and power consumption. In a broad sense, a contactor refers to an electrical appliance that uses a coil to flow through a current to generate a magnetic field to close the contacts in industrial electricity to control the load. In electrical engineering, because it can quickly cut off the main circuit of AC and DC and can frequently connect to the device of high current control circuit, it is often used as a control object for motors, and can also be used to control factory equipment, electric heaters, work For power loads such as main machine and various electric power units, the contactor can not only connect and cut off the circuit, but also has the function of low voltage release prote...

AI Technical Summary

Problems solved by technology

The disadvantage of this invention is that after the contactor works for a long time, the contacts of the contactor will easily generate sparks when they are pulled in, and at the same time cause the contacts of the contactor to be easily oxidized and easily damaged, so that the contacts of the contactor cannot be permanently use, which greatly shortens the service life of the contactor

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