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.

TSI Power Mural

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 Clients

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Why You'll Love Us

High Technology Level
Shorter Lead Times
Enthusiastic Customer Support

Key Staff

Peter Nystrom
Maria Maddix
General Manager
David Nystrom
Director of Marketing
Francis Phang
Director SE Asia Sales
When I spoke with the TSI Power representative about quickly providing me with three UPS-8013NB, he informed me that would be a tall order to fill. But he also added that TSI has top-notch people that can make things happen. Because of my longevity in this business, I lowered my expectations to get these power supplies to my customers on time. To my surprise, he left me a message that not only did it happen but your individuals played a very critical part in making this a reality.

Michael Mothershed

Component Application Engineer II
ADC Network Solutions