产品中文介绍：
M6L-400L/3300塑壳漏电保护断路器是一款专为低压配电系统设计的安全保护装置。该产品采用模块化结构设计，适用于额定电流250A、电压至400V的三相交流电路中，可提供可靠的漏电保护与线路过载/短路保护功能。其核心组件通过优化电磁场分布技术，能够精准检测100mA至500mA范围内的接地故障电流，并根据预设阈值快速切断电路，有效降低电气火灾风险和触电事故发生率。
本产品配备三档可调漏电动作电流（100mA/300mA/500mA），用户可根据实际应用场景的安全需求进行灵活配置。内置的智能处理模块可自动区分瞬时干扰与持续性漏电故障，在确保灵敏度的同时有效降低误动作概率。采用高强度耐高温壳体材料，配合特殊灭弧室结构，使产品具备良好的热稳定性和分断能力，适用于高负荷环境下的长期稳定运行。
主要技术特点包括：1）接触点银合金焊接工艺提升导电性能，降低能耗；2）可视化机械指示窗口实时显示工作状态；3）双复位机构设计同时支持手动测试与自动复位功能；4）紧凑型结构适配标准配电柜安装需求。典型应用场景涵盖工业生产线配电箱、商业建筑总控系统、公共设施供电网络等需要高精度漏电保护的场合，为电力系统的安全运维提供重要保障。
产品英文介绍：
M6L-400L/3300 Molded Case Leakage Protection Circuit Breaker is a safety protection device specifically designed for low-voltage distribution systems. Featuring modular construction, this product operates in three-phase AC circuits up to 400V with a rated current of 250A, delivering reliable earth leakage protection alongside overload/short-circuit protection. Its optimized electromagnetic field distribution technology enables precise detection of ground fault currents ranging from 100mA to 500mA, with rapid circuit interruption based on preset thresholds to effectively mitigate electrical fire hazards and electric shock risks.
The device offers three adjustable leakage current settings (100mA/300mA/500mA), allowing flexible configuration according to specific safety requirements. The integrated intelligent processing module distinguishes transient interference from persistent leakage faults, maintaining high sensitivity while minimizing false tripping. Constructed with high-strength, heat-resistant housing and specialized arc-extinguishing chambers, it ensures thermal stability and reliable breaking capacity for continuous operation under high-load conditions.
Key technical features include: 1) Silver alloy welding process enhances conductivity and reduces energy loss; 2) Visual mechanical indicator for real-time status monitoring; 3) Dual reset mechanism supporting both manual testing and automatic recovery; 4) Compact design compatible with standard distribution cabinet installations. Typical applications extend to industrial production line distribution boxes, commercial building power control systems, and public utility supply networks requiring high-precision leakage protection, making it essential infrastructure for secure power system operations.
（中英文总字数：约680字）
