Zhejiang Chint Electrics Co., Ltd.

Seari Electric Technology Co., Ltd.

Beiming Huang

Ping Zeng

Feng Jia

Hong Xi

Di Zhang

Changxun Gu

Huiyu Ji

Jianrong Lin

Jiexin Zheng

Sihong Li

An indication device of an electric switch comprises an indication component (), a driving component () and a positioning component (). The indication component () has at least three indication positions. Each indication position corresponds to one state of the electric switch, and the indication component () shows one indication mark at each indication position. The indication device of electric switch uses a single indication component () having at least three indication positions, and the third position is provided via deformation of the indication component () itself, thus realizing a simple structure and low manufacturing cost.

Indication device of electric switch

Disclosed is a control and protection device for a low-voltage electrical apparatus, comprising a pedestal and a control and protection module. The control and protection module may be plugged into the pedestal and is replaceable. The pedestal comprises a base and a housing, and is further provided with a moving contact, a static contact, and a current conductor connected to a main circuit current; a control electromagnet operation mechanism for controlling close and open of the moving contact and the static contact according to a control signal, and maintaining a close or open status of the moving contact and the static contact; a manual operation knob providing a control signal for controlling the close and open of the moving contact and the static contact; a control contact connected to the manual operation knob; and a current sensor for detecting a current that flows through the main circuit current conductor and generating a sensing signal. The control and protection device further comprises: a signal processing unit for controlling a state of the control electromagnet according to the sensing signal via an electrical circuit; and a tripping device for controlling actions of the operation mechanism with a mechanical connection in response to the signal processing unit. The current sensor has a secondary circuit connection detection device.

Control and protection device for low-voltage electrical appliance

Growing community of inventors

Shanghai, China

Beiming Huang