MCCB Current Limiter Lug Adapter for Mixed Amperage Connections
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Solution Overview
Problem
Current circuit breakers are limited in their ability to accommodate cables of different amperage ratings, preventing a lower amperage cable from being coupled to a higher amperage circuit breaker due to the design of current limiting lugs, which restricts flexibility in electrical connections.
Innovation Solution
A current limiter lug adapter assembly that includes a lug body with a cable passage suitable for a first amperage and an adaptor body with a conducting surface matching a terminal end of a second amperage, allowing for electrical communication between cables of different ratings by providing an intermediary connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If current limiting lugs are designed with specific amperage ratings and corresponding cable passages, then safety and proper current handling are improved, but adaptability to connect cables of different amperage ratings deteriorates
Solution Approach 1:
The patent introduces an adapter as an intermediary component that connects a cable of first amperage rating to a circuit breaker terminal of second amperage rating. The adapter includes a first cable passage for the smaller cable and a second cable passage for the larger terminal, enabling compatibility between different amperage ratings while maintaining safety through proper current handling paths.
2Reliability
If lugs are designed to fit specific cable sizes, then proper current handling and safety are improved, but flexibility in electrical connections deteriorates
Solution Approach 1:
The adapter serves multiple functions: it accommodates cables of different amperage ratings, provides proper electrical connection paths, and enables a single circuit breaker terminal design to work with various cable sizes. This multi-functionality achieves both proper current handling and flexibility in electrical connections.
3Reliability
If circuit breakers use fixed amperage-rated lugs, then current control and safety are improved, but ease of operation for different cable installations deteriorates
Solution Approach 1:
The solution segments the connection system into three distinct components: the circuit breaker terminal, the adapter, and the cable. This segmentation allows each component to be optimized for its specific function while the adapter provides the flexible interface that simplifies installation of different cable types and amperage ratings.
Data Source
AI summary
An adaptor assembly is provided. The adaptor assembly is structured to allow a cable of a first amperage to be coupled to, and placed in electrical communication with, a terminal of a different amperage. That is, an adaptor assembly includes a lug body and an adaptor body. The adaptor body is coupled to, and in electrical communication with, the lug body. The lug body includes a cable passage, wherein said cable passage has a cross-sectional area corresponding to a cable of a first amperage. The adaptor body includes a conducting surface, wherein said conducting surface has a surface area corresponding to a conductor terminal end mating surface of a second amperage.