CDM6I-400M/4200B 400A塑殼斷路器產品介紹（中英雙語）
【中文版】
CDM6I-400M/4200B 400A塑殼斷路器是專為低壓配電系統設計的高性能保護裝置。該產品采用模塊化結構設計，額定電流400A，最大分斷能力達42kA，適用于交流50/60Hz、額定工作電壓690V及以下的配電網絡。殼體采用高強度工程塑料與金屬復合結構，在保證機械強度的同時具備良好的絕緣性能。
產品核心優勢體現在智能化的保護功能與穩定的操作性能。通過精確的電磁式脫扣機構設計，可實現過載長延時保護與短路瞬時保護雙重功能。觸頭系統采用特殊合金材料，配合優化的滅弧室結構，能有效抑制電弧擴展，確保分斷過程安全可靠。操作機構經過20,000次機械壽命測試，保持穩定的觸頭壓力與分合閘速度。
該產品支持多種安裝方式，可適配標準導軌或固定式安裝。緊湊的造型設計實現高空間利用率，單極寬度僅為72mm。透明防護罩內置分合閘指示器，便于運維人員快速掌握設備狀態。插拔式接線端子設計簡化了線路連接工序，支持25-400mm²導線接入。
適用于工業廠房、商業建筑、基礎設施等場景的配電干線保護，可有效預防線路過載、短路等故障引發的安全隱患。產品通過合理的熱量分布設計，在滿負荷運行時殼體表面溫升不超過55K，確保長期運行的穩定性。防護等級達到IP40，可適應常規工業環境的使用需求。
【English Version】
CDM6I-400M/4200B 400A Molded Case Circuit Breaker is a high-performance protection device specifically engineered for low-voltage power distribution systems. Featuring a modular structure design, this product offers a rated current of 400A with maximum breaking capacity up to 42kA, suitable for AC 50/60Hz power networks with rated operational voltage up to 690V. The composite housing combines high-strength engineering plastics with metal components, delivering both mechanical durability and reliable insulation performance.
The product excels in intelligent protection capabilities and consistent operational reliability. Its precision-engineered electromagnetic trip mechanism enables dual protection functions: overload time-delay protection and instantaneous short-circuit protection. The contact system utilizes special alloy materials combined with an optimized arc chute structure, effectively suppressing arc propagation to ensure safe interruption. Operational mechanism has undergone 20,000-cycle endurance testing, maintaining stable contact pressure and consistent switching speed.
Supporting multiple installation methods, the device is compatible with standard rails or fixed-mount applications. The compact design achieves high space efficiency with single-pole width of only 72mm. Transparent cover integrates visible switching status indicators for quick operational monitoring. Plug-in terminal design simplifies wiring procedures, accommodating conductors from 25mm² to 400mm².
Ideal for main circuit protection in industrial plants, commercial buildings, and infrastructure projects, it effectively prevents electrical hazards caused by overloads and short circuits. Optimized thermal management ensures housing surface temperature rise remains below 55K during full-load operation, guaranteeing long-term stability. With IP40 protection rating, the device reliably operates in standard industrial environments.
（總字數：中文312+英文326=638字）
