Modular multifunctional electrical appliance

Abstract

The invention relates to a modular multifunctional electrical appliance, which comprises a base (1), a shell (2), an electromagnetic driving mechanism (5), an operating mechanism (4) and a main circuit contact group (3). The rear end of the main circuit contact group (3) is provided with a wiring terminal and can be connected to a load by a wire or conductive bus; and the inside surface of the rear end of the shell is jointed with the inside surface of the rear end of the main circuit contact group (3). The modular multifunctional electrical appliance also may comprise an auxiliary module, a thermomagnetic tripping device, a digital controller and an isolating mechanism. The modular multifunctional electrical appliance adopts a modular structure design, so different kinds of products can be assembled by using different modules. The volume of the electrical appliance is small. The control and protection coordinate combination is realized in the product. The wiring of the electrical appliance is convenient. The reliability of the electrical appliance is high. And the electrical appliance has the characteristic of saving energy and material and has high economic and social benefits.

Description

technical field [0001] The invention relates to an electrical appliance, in particular to a modularized multifunctional switching appliance, which belongs to the field of low-voltage electrical appliances. Background technique [0002] The electrical system composed of general low-voltage electrical appliances mainly has two methods: one is to realize the protection function (power distribution device, mainly circuit breaker) and control function (control device, mainly contactor and thermal relay or motor protector). ) composed of discrete switching appliances, the two appliances are independently installed and fixed, and are electrically connected through connectors to control and protect between the power supply and the load. figure 1 It is a typical circuit of the above implementation. The isolating switch G in the figure is to ensure the safety of the maintenance personnel when repairing the circuit; the circuit breaker CB (or fuse R) is used as the short circuit prote...

AI Technical Summary

Problems solved by technology

In this case, still using CPS with bimetallic thermal magnetic protection can no longer meet the requirements, but it is unreasonable

With the development of electronic technology and digital technology, low-voltage electrical appliances have been developing in the direction of intelligence, multi-function, and networking. CPS using bimetallic thermal-magnetic protection can no longer meet site requirements.

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