Fuse Assembly Connecting Bar for Building Connections
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Solution Overview
Problem
Existing fuse units for building connections face high current density and heating issues due to high wiring complexity, making troubleshooting difficult and increasing material costs and assembly time.
Innovation Solution
A connecting bar with N and PE busbars and phase conductors that directly connect to the output side of fuses, eliminating the need for a terminal block and simplifying the wiring process by allowing direct connection of outer, neutral, and protective conductors, thereby reducing the number of terminal points and wiring effort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a terminal block is used to connect outer conductors to fuses, then electrical connections can be established, but the wiring complexity increases and current density-related heating occurs
Solution Approach 1:
The patent extracts and eliminates the terminal block from the circuit breaker assembly, separating the connection function into a standalone connecting bar that attaches directly to the fuses. This removes the intermediate wiring step between outer conductors and fuses, reducing wiring complexity while maintaining reliable electrical connections through direct contact.
2Reliability
If individual wiring is performed between fuses and connection terminals, then electrical connections are established, but assembly time and material costs increase
Solution Approach 1:
The patent merges the connecting bar with multiple connection terminals into a single integrated component. This allows multiple electrical connections to be established simultaneously through one assembly operation rather than requiring individual wiring between each fuse and terminal, significantly improving assembly speed while maintaining connection reliability.
3Reliability
If complex wiring is used to connect fuses to connection terminals, then electrical connections are established, but troubleshooting becomes more difficult
Solution Approach 1:
By removing the terminal block and its associated complex wiring from the circuit breaker assembly, the patent creates a simpler, more direct electrical path from outer conductors through fuses to the connecting bar. This streamlined configuration makes troubleshooting easier by reducing the number of connection points and potential failure sites that need to be investigated.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution reduces thermal stress, simplifies the structure, eases troubleshooting, and saves assembly time and material costs by eliminating the need for complex wiring and terminal blocks, while maintaining effective electrical connections.
Implementation Method 1
the connecting bar has an N busbar to form the neutral conductor, to which the respective neutral conductors of the connecting lines can be electrically connected, and the connecting bar having a PE busbar to form the protective conductor, to which the respective protective conductors of the connecting lines can be electrically connected
Data Source
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AI summary
The invention relates to a fuse arrangement (1) comprising several fuses (10) for protecting the phase conductors (L1, L2, L3) of an electrical fuse unit (100) for a building connection, wherein the fuses (10) are electrically connected to the respective phase conductors (L1, L2, L3) of a plurality of connecting cables (11). According to the invention, the fuse arrangement (1) further comprises an electrical connection busbar (12) arranged on the fuses (10), which provides direct contact between the phase conductors (L1, L2, L3) and an output side (13) of the fuses (10), as well as contact between neutral conductors (N) and protective conductors (PE) of the plurality of connecting cables (11). The invention further relates to a fuse unit (100) with such a fuse arrangement (1) and such a connection busbar (12).