Modular Circuit Breaker Poles for Sealed Interchangeability
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Solution Overview
Problem
Current low-voltage circuit breakers with sealed poles lack interchangeability and standardization, leading to manufacturing inflexibility and increased costs due to the need for separate designs and production lines for different types of poles, as well as complexity in maintenance and conversion between sealed and air poles.
Innovation Solution
A low-voltage circuit breaker design featuring a containment structure with modular, sealed poles and a standard control mechanism, allowing for easy assembly, maintenance, and conversion between sealed and air poles using a limited number of parts, with operative connection means that facilitate compatibility with both sealed and free-air poles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate designs and production lines are used for different types of poles (sealed and air), then manufacturing precision and reliability are improved, but device complexity and manufacturing costs increase
Solution Approach 1:
The patent implements a universal control mechanism that can operate both sealed poles and air poles through a standardized interface. The control mechanism includes a standardized actuating interface that accepts different pole types, allowing one control design to serve multiple pole configurations. This reduces the need for separate production lines while maintaining reliability through dedicated control designs for each pole type.
2Reliability
If sealed poles are used, then arc extinction performance is improved, but manufacturing flexibility and interchangeability deteriorate
Solution Approach 1:
The patent divides the circuit breaker into separable modules: a standardized control mechanism and interchangeable pole assemblies. Each pole type (sealed or air) is designed as a self-contained module with standardized mounting and actuation interfaces. This segmentation allows sealed poles to maintain their superior arc extinction performance while enabling easy interchangeability with air poles through standardized mechanical and electrical interfaces.
Solution Approach 2:
The standardized interface system enables the control mechanism to work with different pole types. The actuating interface, mounting structure, and electrical connections are designed to accommodate both sealed and air poles, allowing users to interchange pole types based on application requirements without redesigning the entire circuit breaker.
3Reliability
If specialized designs are used for sealed poles, then breaking capacity and arc control are improved, but ease of manufacture and maintenance deteriorate
Solution Approach 1:
By segmenting the circuit breaker into modular components with standardized interfaces, the patent enables specialized sealed pole designs to be manufactured separately using optimized processes, then assembled with the standard control mechanism. This maintains high breaking capacity while improving manufacturing efficiency through specialization and assembly rather than custom integration.
Solution Approach 2:
The modular design with standardized interfaces allows sealed poles to be easily removed and replaced if needed, facilitating maintenance and upgrades. The standardized mounting and actuation interfaces enable quick pole replacement without affecting the control mechanism, reducing maintenance complexity despite the specialized nature of sealed poles.
4Reliability
If conversion between sealed and air poles is made complex, then pole performance optimization is improved, but ease of operation and maintenance deteriorate
Solution Approach 1:
The standardized actuating interface and mounting system enable the same control mechanism to operate both sealed and air poles. Conversion between pole types is simplified to a mechanical interchange operation, maintaining optimal performance for each pole type while making conversion as easy as replacing a modular component.
Data Source
AI summary
A low-voltage circuit breaker that comprises: a containment structure; a control mechanism; a plurality of circuit breaking poles, each of which comprises a housing containing a sealed ampoule that in turn contains at least one fixed contact and at least one moving contact, which can be mutually coupled and uncoupled, said housing consisting of a first side and a second side that define an interior containing said ampoule, the outer side wall on said first side being complementary to and associable with the outer side wall of said second side, said poles being located side-by-side to form a set of poles complementary to at least a part of said containment structure; operative connection means between said control mechanism and said poles.