Miniature circuit breaker with on-off and tripping display functions

Abstract

The invention discloses a miniature circuit breaker with on-off and tripping display functions, relates to the field of circuit breakers. The miniature circuit breaker comprises a bottom plate and anupper cover, wherein the upper cover is coupled to the bottom plate; a window and a display panel are arranged in the bottom plate; the window is disposed on the upper portion of the bottom plate of the circuit breaker; the display panel is movably mounted in the bottom plate; the window is located above the sliding path of the display panel; and when the circuit breaker trips, the display panel is moved to a corresponding position of the window. The miniature circuit breaker is provided with the display panel, and can move the display panel, during the tripping process, to the corresponding position of the window, namely displays the tripping state. Thus, it can be clearly displayed whether the circuit breaker is manually turned off or in a state of circuit failure, thereby protecting personal safety.

Description

technical field [0001] The invention relates to the field of circuit breakers, in particular to a small circuit breaker with on-off and tripping display functions. Background technique [0002] Miniature circuit breakers, which can be applied to the main switch and sub-current control switch used in the distribution line, are an important component for protecting electrical appliances. Designate the use of circuit breakers as one of the protection devices. When the circuit breaker detects problems such as short circuit, leakage or severe overload, the circuit breaker can immediately trip to protect the circuit and electrical appliances. [0003] Such as figure 1 As shown, the existing miniature circuit breaker includes a bottom plate 80, a handle 81, a support seat 82, a movable member 83, a main fulcrum 84, a return lever 85, a return torsion spring 86, one or two alloy plates 87, A contact 88 and a contact point 89 , the handle 81 is pivotally mounted on the bottom plate...

AI Technical Summary

Problems solved by technology

[0004] Existing miniature circuit breakers cannot judge from the outside whether the current state is artificially disconnected or the circuit is faulty. If the circuit breaker cannot automatically disconnect the circuit due to an accident in the power distribution line, at this time, if the circuit breaker is used to forcefully disconnect the circuit When the device is powered off, it is easy to cause an electric shock accident due to wrong judgment

[0005] In addition, the existing miniature circuit breakers have unstable mechanisms, which may easily cause poor insulation and withstand voltage during short-circuit tests, and poor reproducibility during tripping tests, resulting in time-consuming rework.

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