Arc extinguishing cover of molded case circuit breaker21
Product Description
The core highlight of this molded-case circuit breaker-specific arc-extinguishing cover lies in its modular structure design. With its convenient installation and maintenance, along with broad model compatibility, it significantly enhances the operational efficiency of power distribution systems while reducing overall costs. This makes it a cost-effective preferred accessory for industrial, commercial, and residential low-voltage power distribution applications.
Modular design constitutes the product's core competitive advantage. The R&D team overcame limitations of traditional monolithic designs by decomposing the arc-extinguishing cover into multiple functional modules. These modules connect precisely via standardized interfaces, ensuring both the sealing integrity and structural stability of the arc-extinguishing chamber while greatly simplifying installation and maintenance. During installation, no specialized complex tools are required. Simply follow standardized procedures to assemble and secure the modules, enabling rapid integration with the circuit breaker body. Compared to traditional products, installation time is reduced by over 40%, significantly boosting the assembly efficiency of complete equipment sets.
The advantages of modular design become even more pronounced in maintenance scenarios. When distribution systems experience faults or require periodic maintenance, there is no need to dismantle the entire circuit breaker. Instead, damaged or aged modules can be replaced individually. This not only reduces the operational difficulty for maintenance personnel but also lowers spare part replacement costs—there is no need to replace the entire arc-extinguishing cover; simply replacing the faulty module restores normal equipment operation. Simultaneously, the universal design of each module simplifies spare part inventory management, avoiding the issue of stockpiling multiple model-specific spare parts.
The product boasts exceptional versatility, seamlessly integrating with multiple mainstream molded-case circuit breaker models on the market. Through comprehensive analysis of structural parameters across different brands and specifications, the modular interface employs standardized design, accommodating various installation dimensions and connection methods. This eliminates the need for additional structural modifications or accessory adaptations, meeting the assembly requirements for most molded-case circuit breakers. This feature not only offers users greater flexibility in procurement choices but also reduces compatibility risks when integrating cross-brand equipment.
Notably, the modular design does not compromise core product performance. It utilizes high-quality, high-temperature-resistant insulation materials, with excellent sealing at module joints to effectively segment and cool arcs, ensuring reliable arc extinction. Rigorous quality control throughout the entire production process guarantees dimensional accuracy and performance compliance for each module, delivering long-term stable and reliable operation to fortify the safety of power distribution systems.
Composition
13 arc-extinguishing grid plates + 2 arc-isolating plates.
The arc-extinguishing grid plates are made of unspangled galvanized steel sheet DX51D+Z/SD, with a hardness ≤150HV1;
The arc-isolating plates are made of epoxy board.
Parameters

parameter
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arc-isolating plate 1
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arc-isolating plate 2
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arc-extinguishing grid 3
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arc-extinguishing grid 4
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arc-extinguishing grid 5
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arc-extinguishing grid 6



