A switch circuit breaker with three-color display

Abstract

The invention discloses a switch and circuit breaker with three-color display. Its structure includes a bottom plate, a movable contact installed on the bottom plate, a static contact, a display block, and a mechanism support seat. A viewing window is formed on the bottom plate. The display block and the mechanism The support seat is coaxially rotatable and installed on the bottom plate. The display block is provided with a three-color display surface at the position corresponding to the viewing window. There is a trigger between the support seat and the display block of the mechanism. The trigger is rotatably installed on the display block. One end of the trigger has an elastic arm against the inner end surface of the display surface of the display block. The other end of the trigger and the contact surface of the mechanism support seat are provided with a lock that can prevent the rotation of the display block. When the moving contact and the static contact are connected When it is in three different states of opening, closing and failure, the lock is unlocked or locked accordingly, and the different display segments of the control display block correspond to the viewing windows. Through this design, the resistance of the display block is small when switching between different display surfaces. The action is fast and the error is small.

Description

technical field [0001] The invention relates to the technology in the field of line protection switches, in particular to a switch circuit breaker with a three-color display. Background technique [0002] As we all know, low-voltage electrical systems need to use appropriate protection devices. Miniature circuit breakers are favored by the market due to their advantages such as modularization, small size, high breaking capacity and convenient installation of rails, and are widely used in public buildings and residential buildings, etc. It is used for opening and closing, overload and short circuit protection of electrical appliances. [0003] The existing miniature circuit breakers still have defects: the switch circuit breaker generally separates the moving contact and the static contact when the circuit fails, and it can be judged by the position of the handle that it is in the two states of opening or closing, but it cannot protect the current protection. Whether the swi...

AI Technical Summary

Problems solved by technology

[0003] The existing miniature circuit breakers still have defects: the switch circuit breaker generally separates the moving contact and the static contact when the circuit fails, and it can be judged that it is in the opening or closing state by the position of the handle, but it cannot protect the current protection. Whether the switch device is in failure to remind, the failure reminder function is not perfect

However, the structure of the operating mechanism of the circuit breaker is cumbersome and the tripping speed is slow, resulting in a decrease in the breaking performance of the product

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