Zhejiang Xurui touts SSR upgrades for industrial control

Zhejiang Xurui Electronic says its solid state relay line uses chip optimization, thermal management and overcurrent protection to support industrial heating, lighting, motor control and automation. The company also points to export sales, certifications and factory-scale production as it pushes the XSSR and XSSVR series into global markets.

Why it matters: - Zhejiang Xurui is targeting industrial systems that need silent, fast and maintenance-free switching. - The relay design is meant to reduce heat, improve electrical isolation and expand the usable load range for engineers. - The product line is aimed at heating, lighting dimming, AC motor control and automation applications.

What happened: - Zhejiang Xurui Electronic Co., Ltd. said it developed SSRs with chip circuit optimization, integrated thermal-conductive encapsulation, flame-retardant high-voltage insulation and intelligent overcurrent protection. - The company identified the XSSR and XSSVR series as the core relay families. - The relays use random-turn-on or zero-crossing switching logic. - Response time is listed at 10ms or less. - Control inputs include 3-32VDC for DA types and 80-250VAC for AA types. - Control current is typically 6-25mA or 5-25mA. - DC-controlled models turn on at 3VDC or above and turn off at 1VDC or below. - Minimal load current can be as low as 0.05A. - Breakover voltage across the output is 2VAC or less.

The details: - Thermal management uses an aluminum alloy base plate that contacts the power chip directly. - The housing uses PA66 nylon for structural rigidity and electrical isolation. - Operating temperature is -20°C to +70°C. - Frequency response is 47-63Hz. - Load current safety factors are 50% to 60% for resistive loads and 30% to 40% for inductive loads. - A 40A rated SSR should be applied at no more than 24A on inductive loads under the stated guideline. - Dielectric strength is at least 2500VAC between input/output and base plate. - Insulation resistance is at least 100MΩ, tested at DC500V. - Output leakage current is capped at 5mA for most models and 1mA or less for the XSSVR-W1 and W2 series. - The company said the protection approach relies on robust chip sizing and derating guidelines rather than a built-in fuse. - Direct copper bonding substrate is used to spread heat away from the thyristor or triac die. - The portfolio covers load current from 2A to 200A. - The miniature PCB-mount XSSR-P series starts at 2A. - The XSSVR-W2 series reaches 200A with a minimum load current of 0.05A. - The XSSR-3 W3 series covers 10A to 75A at 24-480VAC. - Mounting options include screw mounting on a panel or heatsink, plus DIN rail for selected series.

Between the lines: - Xurui is positioning SSR design as a balance of switching precision, heat control and insulation rather than a single-feature improvement. - The wide current range suggests the company is trying to cover both compact control boards and higher-power industrial installations. - The derating guidance signals that application engineering remains central to safe use, especially for inductive loads.

What's next: - Xurui says the product range is available with OEM/ODM customization. - The company is also asking customers to download its brochure for detailed technical specifications: Xurui Product Brochure. - Zhejiang Xurui Electronic says it will continue serving export markets including the United States, Germany, Japan, South Korea, Turkey, Belgium and Egypt.

The bottom line: - Zhejiang Xurui is using packaging, thermal design and protection features to push its SSRs as a broader industrial switching platform, not just a component line.