2025-12-26 未经平台授权，禁止转载 郑 行业分类： 制造业/家用电力器具制造 摘要 继电器是电子控制器件，分电气量和非电量两大类，具周期性显著、技术密集、经营模式灵活等特征。2019-2024年，行业规模从227.60亿增至317.45亿，年复合增长率 6.88%，新能源与电网领域是增长主因。预计2025-2029年，规模将从361.09亿增至606.10亿，年复合增长率13.82%，政策、出口、技术迭代推动增长，电磁与交流固态继 电器持续发展，工业、通信、电力等广泛场景需求也将推动市场规模增长。 行业定义 2025年 继电器行业词条报告 头豹分类/制造业/电气机械和器材制造业/家用电力器具制造 Copyright © 2025 头豹 智控未来——继电器开启多场景渗透高速增长期 头豹词条报告系列 郑梓涛 · 头豹分析师 继电器是一种电子控制器件，拥有控制系统（输入回路）和被控制系统（输出回路），核心功能是在电压、电流等输入量达到规定值时，实 现被控制输出电路的导通或断开。它可分为电气量继电器（电流、电压等）和非电量继电器（温度、压力等）两大类，具备动作快、工作稳定、 寿命长、体积小的优点，本质是用较 ...

Core Insights - The announcement from Taiyong Changzheng on November 17 highlights the fundamental differences between solid-state circuit breakers and solid-state relays, despite both utilizing semiconductor switching technology for circuit control [1] Group 1: Product Comparison - Solid-state relays function primarily as fast execution switches controlled by electrical signals, focusing on the reliability and lifespan of load circuit operations [1] - Solid-state circuit breakers serve as intelligent protection devices with real-time monitoring and fault diagnosis capabilities, designed to automatically detect and interrupt overloads and short circuits within microseconds, emphasizing system-level safety and fault current limiting [1] - Solid-state circuit breakers can also fulfill the functions of solid-state relays due to their high electrical lifespan characteristics [1]

Core Viewpoint - The solid-state relay (SSR) industry is experiencing steady growth in China, driven by advancements in electronic technology and increasing demand from renewable energy sectors and electric vehicles. The market size is projected to reach 11.249 billion yuan in 2024, reflecting a year-on-year increase of 6.6% [1][11]. Industry Overview - Solid-state relays are new types of contactless switching devices composed entirely of solid-state electronic components, offering higher reliability, longer lifespan, and faster switching speeds compared to traditional electromechanical relays [3][11]. - The solid-state relay operates without physical contacts, reducing mechanical wear and electromagnetic interference, making it suitable for applications requiring frequent switching and high reliability [1][11]. Market Size and Growth - The market size of China's solid-state relay industry is expected to grow steadily from 2015 to 2024, reaching 11.249 billion yuan in 2024, with a year-on-year growth rate of 6.6% [1][11]. - The production volume of solid-state relays in China is projected to reach 738 million units in 2024, reflecting a year-on-year increase of 3.9% [15]. Product Demand and Trends - Demand for mid-to-high-end solid-state relays is increasing, with their market share expected to reach 40.10% by 2024, while low-end products will still dominate at 59.90% [13]. - The industry is witnessing a trend towards miniaturization and integration of solid-state relays, driven by the need for compact electronic components in modern devices [23]. Technological Advancements - Continuous advancements in semiconductor technology, materials science, and manufacturing processes are enhancing the performance of solid-state relays, enabling them to meet more complex and high-end application requirements [24]. - New semiconductor materials are allowing solid-state relays to operate stably in harsh environments, supporting the growth of industrial automation and renewable energy sectors [24]. Competitive Landscape - The solid-state relay market in China includes numerous participants, with domestic companies primarily focusing on mid-to-low-end products, while foreign companies dominate the high-end market [17]. - Key players in the industry include Hongfa Technology Co., Ltd., Guizhou Aerospace Electric Co., Ltd., and Zhejiang Chint Electric Co., Ltd., among others [18][19][21].