DZ20L-160/4300塑壳漏电保护断路器产品介绍（中文版）
DZ20L-160/4300塑壳漏电保护断路器是一款专为低压配电系统设计的高性能电气保护装置，适用于额定电流160A的电路环境。该产品采用模块化结构设计，集漏电保护、过载保护及短路保护功能于一体，可有效提升电网运行的安全性与稳定性。其核心漏电保护功能设定值为300mA，配合精确的0.3秒延时动作机制，既能避免瞬时电流波动引发的误动作，又能在持续漏电情况下及时切断故障电路，为工业厂房、商业建筑、公共设施等用电环境提供可靠防护。
产品壳体采用高强度工程塑料注塑成型，内部搭载高灵敏度电磁脱扣机构与热动双金属片复合保护系统。当电路中出现漏电电流超过设定阈值时，专用零序电流互感器可快速检测异常信号，经电子放大单元处理后触发脱扣机构，确保在300mA漏电情况下精确实现0.3秒延时保护。分断能力达到行业先进水平，可有效抑制短路电流产生的电弧能量。面板配置清晰的三位式机械指示器，可直观显示"分闸"、"合闸"、"故障"三种状态，配合人性化操作手柄设计，便于日常维护与状态监控。
本产品适用于交流50Hz、额定工作电压至400V的TN-S、TN-C-S等接地系统，可广泛部署于配电箱主干线路保护、大型设备供电回路保护等场景。优化的散热通道设计使其能在-25℃至+55℃的宽温域环境下稳定工作，防护等级达到IP20标准。通过严谨的出厂检测流程，确保每台设备在模拟过载、短路及漏电工况下均能准确执行保护动作，为电力系统的连续运行提供长效保障。
DZ20L-160/4300 Moulded Case Leakage Circuit Breaker Product Introduction (English Version)
The DZ20L-160/4300 moulded case leakage circuit breaker is a high-performance electrical protection device specifically engineered for low-voltage distribution systems, suitable for circuits with 160A rated current. Featuring modular structural design, this product integrates earth leakage protection, overload protection, and short-circuit protection functions, effectively enhancing the safety and stability of power grid operations. With its core leakage protection threshold set at 300mA and a precise 0.3-second delayed action mechanism, it prevents nuisance tripping caused by transient current fluctuations while ensuring timely circuit interruption during sustained leakage conditions, providing reliable protection for industrial plants, commercial buildings, and public infrastructure.
Constructed with high-strength engineering plastic housing, the device incorporates a sensitive electromagnetic trip mechanism and bimetal thermal protection system. The specialized zero-sequence current transformer rapidly detects leakage signals exceeding preset thresholds, which are processed by electronic amplification units to activate the trip mechanism, achieving accurate 0.3-second delayed protection at 300mA leakage current. Its advanced breaking capacity effectively suppresses arc energy generated by short-circuit currents. The front panel features an intuitive three-position mechanical indicator displaying "OFF", "ON", and "TRIP" statuses, complemented by an ergonomic operating handle for simplified maintenance and status monitoring.
Designed for 50Hz AC systems with rated operational voltage up to 400V, this circuit breaker is compatible with TN-S and TN-C-S grounding systems. It is ideally deployed in main circuit protection of distribution cabinets and power supply loops for heavy-duty equipment. Optimized thermal dissipation channels ensure stable performance across a wide temperature range from -25℃ to +55℃, with protection class reaching IP20. Rigorous factory testing procedures verify each unit s precise protective responses under simulated overload, short-circuit, and leakage conditions, delivering sustained operational reliability for electrical systems. The product s compact dimensions and front-mounted wiring design significantly improve cabinet space utilization while simplifying installation procedures.
