Fusion-type molded case circuit breaker middle cover and circuit breaker

Abstract

The invention discloses a fusion-type molded case circuit breaker middle cover and a circuit breaker. The fusion-type molded case circuit breaker middle cover comprises a middle cover body which is provided with an installation guide column and is used for the alignment and positioning of the connection of the middle cover and an upper cover; a controller mounting cavity is used for mounting a controller of the secondary control loop so as to spatially isolate the secondary control loop from the primary load loop, so that heat radiation of the primary load loop and direct conduction of free metal particles on the controller are avoided; a through mounting hole is formed in the controller mounting cavity and is used for placing a contact pin of the controller, and the contact pin is connected with the acquisition module through insertion; a function module mounting cavity is used for placing a function module, and the function module is configured according to different requirements; atripper wiring hole is used for leading out a tripper control line; an accessory cavity is used for adapting to the accessory module; the controller mounting cavity, the function module mounting cavity, the tripper wiring hole and the accessory cavity are all located in the middle cover body. The middle cover separates the parts from the electric control part, so that the control precision is improved.

Description

technical field [0001] The invention belongs to the technical field of circuit breakers, and in particular relates to a fusion type molded case circuit breaker middle cover and a circuit breaker. Background technique [0002] With the intelligent development of circuit breaker products, more and more functions are required for circuit breakers. The increase of various signal acquisition modules has led to more and more secondary circuits inside circuit breakers and circuit breaker upper covers. The requirements for internal space of products also increased. The electronic controller of the existing circuit breaker is installed in the circuit breaker. For example, the primary load circuit and the secondary control circuit are installed inside the circuit breaker. The heat radiation and free metal particles of the primary circuit have a great impact on the secondary controller; the product During overall disassembly and maintenance, it is impossible to isolate the primary loa...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problems in the prior art, the present invention provides a fusion type molded case circuit breaker middle cover and circuit breaker to solve the problem that the components in the existing upper cover assembly and the electric control components are not really isolated and cause mutual Impact, signal interference issues

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