DZ20L-630/4300 500A 100-300-500MA 塑壳漏电保护断路器产品介绍
（中文版）
DZ20L-630/4300 500A是一款高性能塑壳漏电保护断路器，专为低压配电系统设计，适用于交流50Hz、额定电压至400V的电路中，提供漏电、过载、短路等多重保护功能。其核心功能在于实时监测电路中的漏电电流，当检测到漏电流达到设定阈值（100mA、300mA或500mA可调）时，设备将快速切断电源，有效降低触电风险和电气火灾隐患，保障人身安全与设备稳定运行。
该产品采用模块化结构设计，具备紧凑的塑壳外观和良好的机械强度，安装维护便捷。额定电流500A的设计使其能够承载较高负载，适用于工业厂房、商业建筑、公共基础设施等中大型电力分配场景。通过优化灭弧系统与脱扣机构，设备在短路或过载情况下可快速响应，分断能力优异，确保电路故障时及时隔离风险。
产品支持三段式漏电保护调节功能，用户可根据实际需求灵活选择100mA、300mA或500mA的漏电动作阈值，兼顾灵敏度与抗干扰性，适应不同环境下的安全防护要求。外壳材料具备耐高温、抗冲击特性，配合内部密封工艺，可在潮湿、粉尘等复杂工况中长期稳定工作。此外，设备提供清晰的漏电指示与故障复位功能，便于快速排查问题并恢复供电。
（英文版）
Product Introduction of DZ20L-630/4300 500A 100-300-500MA Molded Case Residual Current Circuit Breaker
The DZ20L-630/4300 500A is a high-performance molded case residual current circuit breaker designed for low-voltage power distribution systems. It operates in AC 50Hz circuits with rated voltage up to 400V, providing comprehensive protection against leakage currents, overloads, and short circuits. Its core function lies in real-time monitoring of leakage current. When the detected leakage reaches preset thresholds (adjustable among 100mA, 300mA, or 500mA), the device promptly interrupts the circuit, effectively mitigating electric shock hazards and electrical fire risks, thereby ensuring personnel safety and equipment reliability.
Featuring a modular structure, this product combines a compact molded case with robust mechanical durability, enabling easy installation and maintenance. With a rated current of 500A, it is capable of handling high-load applications, making it suitable for medium-to-large power distribution scenarios such as industrial plants, commercial buildings, and public infrastructure. The optimized arc-extinguishing system and trip mechanism ensure rapid response during short-circuit or overload conditions, delivering excellent breaking capacity to isolate faults efficiently.
The device supports three-stage adjustable leakage protection (100mA/300mA/500mA), allowing flexible configuration based on practical requirements to balance sensitivity and anti-interference performance across diverse environments. The housing material exhibits high-temperature resistance and impact tolerance, coupled with internal sealing technology, ensuring long-term stability in harsh conditions such as humidity or dust. Additionally, the product offers clear leakage indicators and fault reset functions, facilitating quick troubleshooting and power restoration.
应用场景/Application Scenarios
- 工业电力分配系统（电动机、变压器保护）
Industrial power distribution systems (motor and transformer protection)
- 商业综合体与高层建筑配电柜
Power cabinets in commercial complexes and high-rise buildings
- 医院、学校等公共场所的电气安全防护
Electrical safety protection in public facilities like hospitals and schools
- 户外变电站与临时供电设备
Outdoor substations and temporary power supply equipment
核心优势/Core Advantages
- 多重保护集成，响应速度快；
Integrated multi-protection with rapid response.
- 漏电阈值可调，适配多样化场景；
Adjustable leakage thresholds for diverse scenarios.
- 结构稳固，环境适应性较强；
Robust structure with strong environmental adaptability.
- 操作界面清晰，维护成本可控。
User-friendly interface and controllable maintenance costs.
（总字数：约420字 / Total Word Count: Approx. 420 words）
