Precision Electrical Components for a Smarter World
Leading manufacturer of latching relays, current transformers, shunt resistors, and smart meter components. Trusted by global energy, EV, and smart home innovators.
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Leading manufacturer of latching relays, current transformers, shunt resistors, and smart meter components. Trusted by global energy, EV, and smart home innovators.
Engineered for reliability, precision, and seamless integration across industries.
Secure and stable switching with low power consumption. Ideal for smart meters, EV chargers, and solar inverters.
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High-accuracy current measurement and transformation for monitoring and protection systems.
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Durable manganese copper shunts for precise current measurement in high-reliability circuits.
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Complete solutions including base parts, terminal blocks, and copper assemblies for energy meters.
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Zhejiang Great Electrical Co., Ltd. (GRT or Great Relay) is a national high-tech enterprise located in Yaozhuang Town, Jiashan County, Zhejiang Province — at the heart of the Yangtze River Delta. We specialize in the R&D, production, and sales of latching relays, miniature current transformers, and manganese copper shunts.
With over 38,000 square meters of manufacturing space, 50+ product series, and an annual relay output exceeding 25 million units, we serve clients worldwide with high-quality components, competitive pricing, and rapid response.
Visit Official WebsiteEmpowering next-generation energy systems with intelligent, reliable components.
Real-time energy monitoring with high-precision relays and shunts. Enhance efficiency and reduce costs.
High-current latching relays designed for safe, efficient switching in electric vehicle charging stations.
Reliable switching and current sensing components for solar power conversion systems.
Compact, low-power relays for intelligent home automation and energy management systems.
We combine innovation, scale, and customer focus to deliver unmatched value.
Our dedicated team develops custom solutions based on customer drawings or samples. Fast prototyping and validation ensure time-to-market advantage.
With two in-house manufacturing facilities, we maintain strict quality control and ensure reliable, scalable supply for global partners.
Our products meet RoHS standards and IEC62055-31 UC2 compliance, ensuring safety and regulatory readiness for international markets.
High-performance components trusted by industry leaders.
Ready to discuss your next project? We're here to support your innovation with high-quality components and responsive service.
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