CDM1-250L/3320 125A塑壳断路器产品介绍
【中文版】
CDM1-250L/3320 125A塑壳断路器是一款适用于低压配电系统的电力保护装置，专为电路过载和短路保护需求设计。产品采用模块化结构理念，在保障电气安全性的同时，兼顾操作的便捷性与设备维护的灵活性。
产品主体外壳采用高强度工程塑料制造，具备优良的绝缘性能和机械强度。内部触头系统选用银合金材料，配合优化的灭弧室结构设计，能够有效提升分断能力。125A额定电流规格适用于中小型配电干线保护，三极设计可满足三相交流配电系统的保护需求。操作机构采用弹簧储能式设计，支持手动快速分合闸操作，手柄位置设有清晰的通断指示标识。
在电气性能方面，产品具有稳定的热磁脱扣特性，能够根据负载电流变化实现分级保护。瞬时短路保护响应时间小于20毫秒，可有效限制故障电流对设备的冲击。产品工作电压范围覆盖380V/690V交流系统，环境适应性强，可在-25℃至+70℃温度区间稳定运行。
该产品适用于工业配电柜、商业建筑配电系统、电力控制箱等场景，可实现对电动机、变压器及配电线路的保护。紧凑的尺寸设计便于在标准导轨安装，前后均设有接线端子防护罩，支持多种接线方式选择。日常维护时可通过透明观察窗查看触点状态，维护周期建议根据实际使用环境定期检查。
【English Version】
The CDM1-250L/3320 125A Molded Case Circuit Breaker is a protective device designed for low-voltage distribution systems, providing reliable overcurrent and short-circuit protection. Its modular construction combines electrical safety with operational convenience and maintenance flexibility.
The housing utilizes high-strength engineering plastics with excellent insulation properties and mechanical durability. The silver alloy contact system works in conjunction with an optimized arc-extinguishing chamber design to enhance breaking capacity. With a rated current of 125A, this three-pole device is suitable for protecting medium-small power distribution lines in three-phase AC systems. The spring-operated mechanism enables quick manual switching, complemented by clear ON/OFF position indicators.
Electrical performance features include stable thermal-magnetic trip characteristics that provide graded protection based on load current variations. Instantaneous short-circuit protection activates within 20 milliseconds, effectively limiting fault current impact. The device operates reliably across 380V/690V AC systems and demonstrates strong environmental adaptability within -25℃ to +70℃ temperature range.
This product finds application in industrial switchboards, commercial building distribution systems, and power control cabinets, offering protection for motors, transformers, and distribution lines. Its compact dimensions allow easy DIN rail mounting, with protective terminal covers supporting multiple wiring configurations. The transparent inspection window facilitates contact status monitoring, with maintenance intervals recommended according to operational environment conditions.
Key technical parameters:
- Rated current: 125A
- Number of poles: 3
- Rated operational voltage: AC 400V/690V
- Mechanical lifespan: ≥20,000 operations
- Connection capacity: 35mm² (copper conductor)
（总字数：中英文各约350字，合计700字）
