Voltage relay products are critical for ensuring the safety and operation of electrical systems. They are used to regulate the flow of electricity by turning the power on or off whenever necessary. They are able to shield equipment from damage resulting from issues such as over or under voltage. Yousi strives to provide you with a reliable solution. Yousi is a professional Electrical Equipment & Supplies voltage relay manufacturer and supplier in China. Our company provides a wide range of products, including high quality voltage relays, with various specifications to satisfy your specific needs, arrangements can vary perfectly, to be suitable for different industries.
At Yousi, we offer quality voltage relays that are great for industrial application. These are relays that can really carry big loads and put up with rough conditions. And we price them right for businesses to be able to keep their systems operating the way they should. We understand your equipment needs durable parts that won’t break the bank and that’s what we offer.

For those who buy at a large number, you can trust the voltage relays from Yousi. We know retail stores do not have time on their hands to spend "testing" products to see if it will break down or not. Our voltage relays are surgically tested for maximum performance. That way, you know that the quality will be reliable, and you won’t run into any unpleasant surprises.

Yousi Relay, the technology is always improving, and at Yousi, we ensure our voltage relays are up-to-date with the latest technology. This, in turn, makes them incredibly accurate when you are checking, detecting, or monitoring the voltage levels. From protecting sensitive electronic equipment to powering large machinery, our reliable relays can do the job. Precision owes modern industries the service that they render.

We know that different industries have different requirements. This is the reason why there is such a diversity of voltage relays available at Yousi. Regardless of the industry, we offer a wide selection of relay products that you can count on to perform when exposed to the rigors of industrial applications. Our diversity allows every line of business to choose the right fit, and no longer have to compromise when it comes to safety or productivity.
Our dedicated team of purchasers, technicians, sales experts, and logistics specialists works collaboratively to reduce costs, provide timely technical support, ensure accurate quotations, and deliver secure packaging for seamless global service.
Backed by a team with more than 20 years of industry experience, we serve 180+ countries and regions and have supported over 10,000 customers with reliable automation solutions and competitive global pricing.
We maintain authorized partnerships with over 10 top-tier international brands such as Siemens, Omron, Mitsubishi, and Schneider, ensuring genuine, high-quality industrial control products for clients worldwide.
We supply a complete range of industrial electrical equipment—including PLCs, HMIs, sensors, inverters, motors, and solenoid valves—providing integrated, high-performance solutions for diverse automation needs.