CDM3-630N/4300A 500A塑壳断路器产品介绍
中文版：
CDM3-630N/4300A 500A塑壳断路器是一款专为配电系统设计的电力保护装置，适用于交流50Hz/60Hz、额定工作电压至690V的电力网络中。该产品采用紧凑型模块化设计，额定电流覆盖500A范围，可为工业、商业及公共设施领域提供可靠的电路保护解决方案。
产品采用高强度工程塑料外壳，内部配置双断点触头结构，有效提升分断能力。通过优化电磁脱扣机构和热脱扣装置的配合精度，确保设备在过载或短路情况下快速响应。分断能力达到4300A，能有效切断故障电流，保障用电系统的安全性。产品支持固定式和插入式两种安装方式，具备三极和四极规格可选，适配不同配电场景需求。
在功能设计方面，该断路器配备清晰可见的分合闸指示窗口和多级触头位置标识，便于日常运维人员快速判断设备状态。插拔式接线端子采用防松脱结构设计，确保长期使用中的接触可靠性。同时，产品预留外部附件扩展接口，可根据实际需要选配报警触点、分励脱扣器等辅助功能模块。
本系列产品适用于电力配电系统的主干线路保护、电动机保护及设备末端保护，主要应用场景包括工业厂房配电柜、商业综合体供电系统、新能源发电站等。通过精确的电流整定和稳定的机械性能，帮助用户实现配电系统的选择性保护，降低设备维护成本，提升供电连续性。
英文版：
CDM3-630N/4300A 500A Molded Case Circuit Breaker Introduction
The CDM3-630N/4300A 500A Molded Case Circuit Breaker is a professional circuit protection device designed for power distribution systems, suitable for AC 50Hz/60Hz networks with rated operational voltage up to 690V. Featuring a compact modular design with 500A rated current capacity, it delivers reliable circuit protection for industrial, commercial and public facility applications.
Constructed with high-strength engineering plastic housing and dual-break contact system, the product demonstrates enhanced breaking capacity. The precisely calibrated electromagnetic trip mechanism and thermal trip unit ensure rapid response to overload or short-circuit conditions. With 4300A breaking capacity, it effectively interrupts fault currents to maintain electrical system safety. Available in both fixed and plug-in versions, the product offers three-pole and four-pole configurations to accommodate diverse installation requirements.
Functional design highlights include visible switching status indicators and multi-stage contact position markings for operational clarity. The clamp-type terminals incorporate anti-loosening structure to ensure long-term connection reliability. Expandable accessory interfaces allow flexible integration of auxiliary modules such as alarm contacts and shunt trip units according to specific application needs.
This series is ideal for main circuit protection in power distribution systems, motor protection and terminal equipment protection. Typical applications include industrial plant switchboards, commercial complex power supply systems and renewable energy power stations. Through accurate current setting and stable mechanical performance, it helps achieve selective protection coordination in electrical networks, effectively reducing maintenance costs while improving power supply continuity.
（中英文总字数：约600字）
