A three-phase AC contactor with multiple auxiliary contacts

Abstract

The invention provides a three-phase AC contactor with multipath auxiliary contacts. The three-phase AC contactor comprises a base plate assembly, wherein the base plate assembly is fixedly connected with the lower end of an electromagnet assembly, the upper end of the electromagnet assembly is fixedly provided with a mounting plate, a circuit board assembly is fixedly connected with the mounting plate through a sealing gasket A, the upper side of the circuit board assembly is provided with a cover, and a gasket B is arranged between the circuit board assembly and the cover; a pushing plate sleeves a core rod through an adjusting gasket in a movable manner, the lower end of the core rod passes through a through hole in the circuit board assembly and is fixedly connected with the mounting plate, microswitches are symmetrically arranged on two sides of the core rod and are fixedly mounted on the circuit board assembly, and spring strips on the microswitches are arranged within a stroke range of the pushing plate. The three-phase AC contactor has the beneficial effects that: the auxiliary contact system adopts a microswitch structure, can be equipped with a plurality of microswitches according to requirements on number of auxiliary contact paths, can be in contact with different spring strips by adjusting positions of the pushing plate, and solves the problem that the traditional contactor usually has small number of the auxiliary contact paths.

Description

technical field [0001] The invention relates to the technical field of manufacturing three-phase AC contactors, in particular to a three-phase AC contactor with multiple auxiliary contacts. Background technique [0002] Contactors are widely used in the breaking and switching functions of power control systems such as aviation, aerospace, and ships. With the advancement of national science and technology and the improvement of weapons and equipment capabilities, higher requirements are put forward for data collection and linkage monitoring. Traditional contactors generally have fewer auxiliary contact circuits, which can no longer meet the technical requirements of new combat aircraft control. The relevant technical characteristics are as follows: [0003] 1) Generally, ordinary contactors have few auxiliary contacts, mostly one or two circuits, and some contactors do not even have auxiliary contacts. Data collection and linkage monitoring functions cannot be effectively r...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above technical problems, the present invention provides a three-phase AC contactor with multiple auxiliary contacts. The three-phase AC contactor with multiple auxiliary contacts adopts a micro switch structure for the auxiliary contact system, Multiple micro switches can be configured according to the number of auxiliary contacts, which solves the problem that traditional contactors generally have fewer auxiliary contacts and cannot meet the requirements of control technology

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