产品名称：塑壳漏电保护断路器
Product Name: Molded Case Residual Current Circuit Breaker
型号：DZ20L-160/4340B
Model: DZ20L-160/4340B
中文介绍：
DZ20L-160/4340B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保护装置，适用于交流50Hz、额定工作电压至400V的电路中，可实现对线路漏电、过载及短路故障的快速检测与分断保护。产品采用模块化结构设计，具备操作便捷、安全可靠的特点，可广泛应用于工业厂房、商业建筑、公共设施等场景的电力系统保护。
该产品额定电流为160A，漏电动作电流值为500mA，能有效监测线路中的漏电电流变化。当检测到漏电电流超过设定阈值时，断路器可在0.1秒内快速切断电源，显著降低触电风险与电气火灾隐患。其直流24V辅助控制电源设计，支持外接信号扩展功能，便于集成到自动化控制系统中，满足智能化配电管理需求。
产品外壳采用高强度工程塑料注塑成型，具备优异的绝缘性能与抗冲击能力。内部搭载多重灭弧系统，可快速分断故障电流并抑制电弧产生。直观的机械状态指示窗口配合手动分合闸操作机构，简化了设备调试与维护流程。四极（3P+N）结构设计可适配三相四线制配电网络，提供全面的线路保护。
英文介绍：
The DZ20L-160/4340B molded case residual current circuit breaker is a high-performance protection device specifically designed for low-voltage distribution systems. It operates in circuits with AC 50Hz and rated working voltage up to 400V, providing rapid detection and interruption of leakage currents, overloads, and short-circuit faults. Featuring a modular structural design, this product combines operational convenience with safety and reliability, making it suitable for power system protection in industrial plants, commercial buildings, and public infrastructure.
With a rated current of 160A and residual current operating value of 500mA, the device effectively monitors leakage current variations in circuits. Upon detecting leakage currents exceeding the preset threshold, the breaker can interrupt power supply within 0.1 seconds, significantly reducing electric shock risks and fire hazards. The integrated 24V DC auxiliary control power supply supports external signal expansion, enabling seamless integration into automated control systems for intelligent power management.
The housing is molded from high-strength engineering plastics, offering excellent insulation and impact resistance. The multi-stage arc extinguishing system ensures rapid fault current interruption and effective arc suppression. A clear mechanical status indicator window and manual switching mechanism simplify device commissioning and maintenance. The four-pole (3P+N) configuration is compatible with three-phase four-wire distribution networks, delivering comprehensive circuit protection.
技术参数（Technical Parameters）：
额定电流（Rated Current）: 160A
漏电动作电流（Residual Operating Current）: 500mA
极数（Number of Poles）: 4P（3P+N）
额定工作电压（Rated Operational Voltage）: AC 400V
控制电源电压（Control Supply Voltage）: DC 24V
机械寿命（Mechanical Endurance）: ≥10,000次（cycles）
安装方式（Mounting Type）: 导轨/固定式（DIN rail/Fixed）
产品优势（Advantages）：
- 双重保护机制：同步实现漏电保护与过流保护功能
Dual Protection: Integrates residual current and overcurrent protection
- 宽温适应性：-25℃至+70℃环境下稳定运行
Temperature Resistance: Reliable operation from -25℃ to +70℃
- 扩展兼容性：支持报警触点与远程分闸信号接入
Expandable Functionality: Compatible with alarm contacts and remote tripping signals
- 维护便利性：可拆卸式端子设计简化线路连接
Service-Friendly: Detachable terminals simplify wiring
- 节能设计：低功耗控制电路降低系统运行成本
Energy Efficiency: Low-power control circuit reduces operational costs
