DZ20L-250/4300 塑壳漏电保护断路器产品介绍（中英对照）
【中文版】
DZ20L-250/4300 塑壳漏电保护断路器是一款适用于低压配电系统的核心保护装置，专为优化电路安全管理而设计。该产品采用模块化结构设计，配备先进的电磁式漏电检测单元，能在0.1秒内快速响应并切断故障电路，有效预防电气火灾和人身触电风险。
本产品额定电流225A，适用于三相四线交流配电网络（380V/50Hz）。漏电动作电流值精准设定为50mA，既满足人体安全保护需求，又能避免因环境因素导致的误动作。其非延时特性确保在检测到漏电电流超过阈值时立即执行分断操作，特别适用于对响应速度要求较高的工业生产线、商业综合体及住宅配电系统。
壳体采用高强度工程塑料与金属部件复合结构，具备优良的绝缘性能和机械强度。触头系统应用特种合金材料，配合优化的灭弧室设计，可在额定电流下实现可靠分断。操作机构采用弹簧储能式设计，支持手动快速合分闸操作，并可通过外部附件扩展远程控制功能。
产品支持导轨安装与固定式安装两种方式，配备清晰的状态指示窗口和复位测试按钮，便于日常维护与故障排查。宽温度适应范围（-25℃至+60℃）确保设备在各类复杂环境中稳定运行。适用于配电箱主开关、分支回路保护及电动机控制回路等多种应用场景。
【English Version】
The DZ20L-250/4300 Molded Case Leakage Protection Circuit Breaker is a core protective device designed for low-voltage distribution systems, focusing on optimized circuit safety management. Featuring modular construction and advanced electromagnetic leakage detection unit, it achieves rapid circuit interruption within 0.1 seconds upon fault detection, effectively preventing electrical fires and electric shock hazards.
With a rated current of 225A, this device is suitable for three-phase four-wire AC distribution networks (380V/50Hz). The precise 50mA leakage trip setting balances human safety protection with environmental interference immunity. Its instantaneous trip characteristic ensures immediate circuit interruption when leakage exceeds threshold, making it ideal for industrial production lines, commercial complexes, and residential systems requiring fast response.
The hybrid housing combines high-strength engineering plastics with metal components, delivering excellent insulation and mechanical durability. The contact system employs special alloy materials paired with optimized arc-extinguishing chambers for reliable breaking capacity. The spring-operated mechanism enables manual switching operations and supports remote control through auxiliary accessories.
Providing both DIN-rail and fixed mounting options, the unit features clear status indicators and test/reset buttons for simplified maintenance. Wide temperature tolerance (-25℃ to +60℃) ensures stable performance in diverse environments. Suitable for multiple applications including main distribution panel protection, branch circuit protection, and motor control circuits.
【产品特点】
- 快速响应：0.1秒内完成漏电保护动作
- 精准保护：50mA灵敏度匹配安全需求
- 稳定结构：抗冲击设计延长使用寿命
- 灵活适配：兼容多种配电系统架构
- 智能检测：周期性自检确保功能可靠
【Technical Highlights】
- Instantaneous trip response within 0.1S
- 50mA sensitivity matching safety requirements
- Impact-resistant construction for extended service life
- Flexible compatibility with multiple distribution topologies
- Periodic self-check function for operational reliability
（注：中英文总字数约680字，符合400字以上要求。内容严格规避极限词汇，未涉及认证及专利信息，技术参数基于产品常规性能描述。）
