Arc extinguishing cover of molded case circuit breaker20
Product Description
Tailored specifically for low-voltage power distribution systems, this product focuses on compatibility with various molded case circuit breakers. Its superior insulation performance and aging resistance ensure sustained stable operation, providing core support for the safety and reliability of low-voltage power distribution networks. It is widely applicable in low-voltage power distribution scenarios such as industrial plants, commercial buildings, rail transit, and data centers.
Exceptional insulation performance stands as a core strength of this arc-extinguishing cover. Constructed from high-purity insulating base materials and processed through specialized techniques, it not only effectively blocks current leakage within low-voltage distribution systems but also withstands the transient high voltages and arc impacts generated during circuit breaker operation. This eliminates safety hazards such as short circuits and leakage caused by insulation failure. Its insulation performance strictly complies with GB/T 14048 series standards and relevant industrial-grade specifications. Verified by authoritative testing institutions, the insulation resistance remains stable within a high-standard range at rated voltage, establishing the first line of defense for distribution systems.
Addressing the continuous operation characteristics of low-voltage distribution systems, this product features enhanced aging resistance. Through optimized formulations and aging tests, the product effectively resists various aging factors including environmental temperature fluctuations, humidity variations, chemical corrosion, and UV exposure. Even under prolonged full-load operation, it exhibits no material embrittlement or performance degradation. Compared to standard arc-extinguishing components, this product offers significantly extended service life, fundamentally reducing maintenance frequency and replacement costs for low-voltage distribution systems.
Long-term stability and reliability form the core competitive advantage of this product. During routine operation of low-voltage distribution systems, circuit breakers frequently handle overloads and mild overcurrent conditions. The performance stability of the arc-extinguishing cover directly impacts overall system effectiveness. After undergoing thousands of closing and opening cycle tests, this product maintains consistent dimensional accuracy and performance metrics. It precisely matches the operational rhythm of molded-case circuit breakers, ensuring efficient and controllable arc-extinguishing processes. Additionally, adhering to standardized design principles, the product features installation interfaces perfectly compatible with mainstream molded case circuit breaker models. It enables rapid assembly without additional modifications, significantly boosting construction efficiency.
As a critical component for low-voltage power distribution systems, this arc-extinguishing cover, backed by stringent quality control and precise scenario adaptability, stands as the preferred choice for ensuring low-voltage distribution safety. It empowers users to build efficient, stable, and secure low-voltage power distribution systems.
Composition
10 arc-extinguishing grid plates + 2 arc-isolating plates.
The arc-extinguishing grid plates are made of Q195 strip steel with a Cu3Ni2b (Cu2.5Ni1.5) coating;
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



