DZ20Y-400T/3330 400A AC220V塑殼斷路器（中英雙語介紹）
【中文版】
產品概述：
DZ20Y-400T/3330塑殼斷路器是一款專為低壓配電系統設計的高性能電氣保護裝置，采用創新透明殼體結構和集成化排線設計。產品額定電流400A，工作電壓AC220V，適用于工業配電、商業建筑及公共設施的電力分配與控制場景。其緊湊型結構在保證功能完整性的同時，兼顧了安裝便捷性與運維可視化需求。
核心設計特點：
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透明觀察窗口
殼體頂部配置高透光工程材料視窗，可直觀查看內部觸頭狀態與分合閘指示，便于快速判斷設備運行狀態，降低巡檢維護難度。
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集成式接線系統
內置優化設計的銅排連接結構，支持多線纜并行接入。模塊化插接端子實現快速配線，有效縮短安裝工時，尤其適應密集型配電柜的布線需求。
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精準保護機制
配備三段式保護特性（過載長延時、短路短延時及瞬時保護），通過精確的電磁-熱雙脫扣系統實現對線路的全面防護。動作特性曲線經過嚴格驗證，確保在各類負載條件下穩定運行。
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環境適應能力
殼體采用耐高溫、抗沖擊復合材料，可耐受-25℃至+70℃工作環境。內部元件經特殊防塵處理，適用于粉塵、潮濕等復雜工況環境。
典型應用場景：
• 制造工廠動力配電柜主開關
• 商業綜合體樓層配電箱
• 光伏發電系統直流側保護
• 軌道交通站場供電系統
使用建議：
建議定期通過透明窗口進行目視檢查，及時清除表面浮塵。連接排緊固件推薦每2000操作次或每年進行扭矩校驗（具體以實際使用強度為準）。
【English Version】
Product Overview：
The DZ20Y-400T/3330 400A AC220V Molded Case Circuit Breaker is a high-performance electrical protection device specifically engineered for low-voltage distribution systems. Featuring an innovative transparent housing and integrated busbar design, this 400A rated device operates at AC220V, making it suitable for power distribution and control in industrial plants, commercial buildings, and public infrastructure applications. Its compact construction ensures functional integrity while optimizing installation efficiency and operational visibility.
Key Design Features：
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Transparent Inspection Window
The top-mounted viewing window made of high-transparency engineering polymer allows visual confirmation of contact status and switching position indication, significantly simplifying equipment condition monitoring and maintenance procedures.
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Integrated Connection System
Optimized copper busbar structure supports parallel cable termination. Modular plug-in terminals enable rapid wiring, particularly beneficial for high-density panel installations.
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Precision Protection Mechanism
Three-stage protection characteristics (overload long-time delay, short-circuit short-time delay and instantaneous trip) are achieved through a calibrated electro-thermal magnetic tripping system. Verified tripping curves ensure reliable operation across diverse load conditions.
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Environmental Durability
High-impact resistant housing material withstands operating temperatures from -25℃ to +70℃. Internal components with dust-proof treatment maintain performance in challenging environments including dusty or humid locations.
Typical Applications：
• Main switchgear in manufacturing plant power distribution cabinets
• Floor distribution boxes of commercial complexes
• DC side protection in photovoltaic systems
• Power supply systems for rail transit stations
Usage Recommendations：
Regular visual inspection through the transparent window is advised. Busbar fasteners should undergo torque verification every 2,000 operations or annually (subject to actual service conditions).
（中英文合計約620字）
