Circuit Breaker Lockout Device Hinged Modular Design
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Solution Overview
Problem
Conventional circuit breaker lockout devices lack robustness, reliability, and proper fit, often failing to prevent operation in severe industrial environments and requiring cumbersome installation processes, with some devices exceeding necessary clearance and having loose pieces.
Innovation Solution
The development of various lockout devices, including blade-type, lever-type, clam shell-type, and modular designs, which consist of two pieces hinged together with locking mechanisms, allowing secure attachment to circuit breaker panels without loose parts, preventing the switch from moving from the open to closed position, and accommodating different panel configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional lockout devices are used, then they can provide basic lockout function, but they lack robustness and reliability in severe industrial environments
Solution Approach 1:
The lockout device employs composite construction combining rigid structural components (for strength and robustness) with flexible sealing elements (for reliability in industrial environments). The housing uses high-strength materials while incorporating gaskets and seals to prevent contamination and ensure reliable operation under severe conditions.
Solution Approach 2:
The device is divided into modular segments including a main body, movable locking components, and detachable sealing elements. This segmentation allows each component to be optimized for its specific function while maintaining overall reliability and robustness through coordinated design of the modular assembly.
2Reliability
If conventional lockout devices are used, then they can secure circuit breakers, but they exceed maximal clearance necessary for panel door closure
Solution Approach 1:
The lockout device incorporates dynamic, adjustable components that can adapt their position and configuration based on the specific circuit breaker and panel door clearance requirements. Movable arms and adjustable locking positions allow the device to provide reliable security while minimizing the protrusion into the panel door closure space.
Solution Approach 2:
The device concentrates its locking and securing functions at specific localized points on the circuit breaker, rather than requiring uniform coverage across the entire device. This allows the majority of the device body to remain compact and clear of the panel door, while still providing reliable lockout security at the critical switching points.
3Reliability
If conventional lockout devices are used, then they can lockout circuit breakers, but they have loose pieces that are cumbersome to manage
Solution Approach 1:
The device integrates multiple previously separate components into a single unified assembly. The locking mechanism, sealing elements, mounting features, and identification tags are all combined into one pre-assembled unit that attaches to the circuit breaker as a complete package, eliminating loose pieces and simplifying installation and removal operations.
Solution Approach 2:
The lockout device is pre-assembled and pre-configured with all necessary components in their correct positions before installation. Sealing elements are pre-positioned, locking mechanisms are pre-set, and mounting features are pre-aligned, allowing the installer to simply attach the complete assembly to the circuit breaker without managing multiple separate parts.
4Adaptability or versatility
If conventional lockout devices are used, then they can provide lockout capability, but they lack proper fit for various circuit breaker configurations
Solution Approach 1:
The lockout device is designed with universal mounting features and adjustable components that can accommodate various circuit breaker types, sizes, and configurations. Standardized attachment points and scalable dimensions allow the same basic device design to fit different panel and breaker configurations while maintaining precise fit through adjustment mechanisms.
Data Source
AI summary
Circuit breaker lockout devices are disclosed that effectively lock one or more circuit breakers in a circuit breaker panel in a safe or open circuit position. Embodiments of the circuit breaker lockout devices are robust, utilize few loose parts, and are easily installed. The devices are also short in profile, thereby allowing them to be installed in a circuit breaker panel having minimal clearance between the circuit breakers and a closed panel door cover.