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Tru-Block products have withstood the test of time (no surge failures or fires in the company’s history), and every unit is 100% computerized surge tested as part of our quality assurance program.

That’s right! All Tru-Block products are made exclusively in the U.S. But that’s not all. We make every effort to source the quality components that go into Tru-Block products here at home too.

While initially developed for critical business and government applications, Tru-Block™ products are now available through select distributors. Call 800-996-6696 or click here to learn more.

Tru-Block technology that is a true 1st line of defense against worst case surges.  Safer, more effective and more reliable than traditional panel mounted systems. Tru-Block is a failure-free alternative to MOV based whole building surge protection systems. Meets the … Continue reading →

Tru-Block™ technology was developed in 1989 to be safer, more effective and more reliable for critical business and government applications. Tru-Block technology: Does not use MOVs or degrade with use – has 1,000 worst case surge endurance. Has a let-through … Continue reading →