复合开关，HXFK0.25-45A

产品概述

HXFK0.25-45A复合开关是一种机电一体化智能投切装置，专为低压无功补偿系统设计。该产品通过创新技术融合了可控硅与磁保持继电器的优势，适用于交流50Hz-60Hz、额定电压220V/380V的电力环境，可有效控制电容器的投切过程。其核心特点是实现电压过零导通和电流过零断开，既保留了半导体器件的快速响应特性，又具备物理开关的低能耗优势。15

技术特点

HXFK0.25-45A采用分补控制方式（3Y型），控制容量为10kVar。产品通过单片机智能监控系统实现多重保护功能，包括电压缺相保护、欠压保护和自诊断保护。当系统电压低于设定值或出现缺相时，开关会自动拒绝闭合或断开连接；停电时能自动跳闸确保安全。独特的过零投切技术使其工作时无涌流冲击，磁保持继电器的应用使得运行功耗低于1.5VA，接触电阻≤0.01Ω，且不会产生谐波干扰。31015

结构设计

该复合开关由三个独立单元组成，采用模块化设计便于维护。外形尺寸为110×150×98mm，安装孔距98×128mm。控制端采用光电隔离技术，抗干扰能力较强，可直接与动态补偿控制器配套使用。内部结构优化了散热设计，无需额外配置散热片或风扇，在-25℃至55℃环境下均可稳定工作。产品适用于三相负荷不平衡的场合，能实现各相电容的独立精确投切。62325

应用领域

HXFK0.25-45A主要应用于工业配电系统、商业建筑及公共设施的节能改造项目。在纺织机械、注塑设备、电梯等存在快速负载变化的场景中，能有效改善功率因数，降低线路损耗。其无噪声运行特性使其特别适合医院、学校等对环境要求较高的场所。产品通过简化接线设计和拔插式接口，提高了安装效率，缩短了现场施工时间。162127

英文介绍

The HXFK0.25-45A hybrid switching device is an electromechanical integrated solution for capacitor bank control in low-voltage reactive power compensation systems. Operating at 50Hz-60Hz with rated voltage of 220V/380V, this three-phase device adopts star-connected topology (3Y type) supporting 10kVar compensation capacity. Its zero-crossing switching technology combines thyristor s rapid response and relay s energy-efficient operation, achieving seamless engagement under voltage zero-point and disengagement at current zero-crossing.36

Key features include microprocessor-based intelligent monitoring with comprehensive protection against phase loss, under-voltage and self-diagnosed faults. The magnetically held relay mechanism ensures ≤1.5VA power consumption during operation while maintaining contact resistance below 0.01Ω. With compact dimensions (110×150×98mm) and pluggable terminals, the switch facilitates easy integration into existing panels. The photoelectric isolation design enhances EMI resistance, making it suitable for harsh industrial environments with significant harmonic disturbances.101525

This product finds wide applications in manufacturing facilities, commercial complexes and infrastructure projects requiring dynamic power factor correction. Its noiseless operation and independent phase control capability address challenges in unbalanced load conditions. The maintenance-free design eliminates need for cooling accessories, reducing lifecycle costs. Simplified wiring architecture with color-coded terminals minimizes installation errors and commissioning time.162127

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