ISO 9001:2015 Certified 
Made in the USA
TSI builds electrical power products to succeed, time after time.
The Ultimate Power Solution. TSI Power makes the highest-quality power solutions available. Our off-the-shelf and custom products are engineered to perform continuously – and reliably – at the outer limits of their stated specifications. Customers around the world rely on TSI Power to protect their mission-critical applications.
Headquartered in Antigo Wisconsin, USA, TSI Power thrives on being located in a small community with a stable work force and ready access to major component suppliers. We value our suppliers and have developed long-term relationships in order to assure best quality and lead time for components.
We design, engineer, manufacture and service all of our products right here in north central Wisconsin. Because of our corporate culture and rigorous hiring standards, our employees have many years of on-the-job experience and employee turnover is extremely low. We believe that employee skills coupled with stability are the foundation to our ability to provide high quality power products.
With our nimble structure, we’re able to quickly provide the help and support our customers need, from sales to technical support to trouble shooting. Our customers find it easy to access TSI Power’s decision makers and technical resources, since they don’t have to go through multiple layers of people and departments. If you need help, we’re just a phone call or e-mail away – and we’ll respond within 24 hours.
Some of Our Customers
Why You'll Love Us
Key Staff
We have used TSI Power’s ILC-1000MED4 (now ILC-1000-MED8) since 2000 to provide isolated, low-leakage power to our HRT retinal tomography. TSI has been a reliable supplier.