Circuit breaker capable of autonomously selecting overload protection mode

Abstract

The invention relates to the technical field of circuit breakers, and particularly discloses a circuit breaker capable of autonomously selecting an overload protection mode, which comprises a base, a middle cover, a selection module and a switch piece, a thermal element assembly used for monitoring overload of the circuit breaker is arranged in the base, and the selection module is arranged on the base or the middle cover. The selection module is connected with a warning piece and a shunt release and is used for starting the warning piece and / or the shunt release; the switch piece is located on the outer surface of the middle cover, and the switch piece is connected with the selection module and used for starting the selection module; the thermal element assembly comprises an overload triggering piece; switch piece through holes are formed in the positions, corresponding to the overload triggering piece and the switch piece, of the middle cover, and when the circuit breaker is overloaded, the overload triggering piece penetrates through the switch piece through holes to touch the switch piece so as to start the switch piece. The invention provides a circuit breaker which can be externally connected with accessories and can select an overload feedback mode.

Description

technical field [0001] The invention relates to the technical field of circuit breakers, in particular to a circuit breaker which can independently select an overload protection mode. Background technique [0002] During the use of the molded case circuit breaker, when the line is overloaded, the circuit breaker will trip by itself to achieve the goal of line disconnection due to the protection of the line and electrical components; but in some cases, For example, in fire protection applications, even when the circuit breaker is overloaded, it is necessary to keep it on. Therefore, whether the circuit breaker needs to be disconnected due to overload needs to be selected by the customer according to the application. In some cases, it can be freely switched according to the demand. trip. [0003] At present, the alarm circuit boards of most alarm and non-tripping products on the market are installed inside the product. This structure leads to the fact that the circuit boards ...

AI Technical Summary

Problems solved by technology

[0003] At present, the alarm circuit boards of most of the alarm non-tripping products on the market are installed inside the product. This structure leads to the fact that the circuit boards are easily contaminated during the test and the reliability is reduced, and there are also products that are locked when they leave the factory. mode, the alarm non-tripping mode cannot be changed to the tripping mode, the function is single, and the application range is limited

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