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 voltage of only 330V
- Operates effectively over a very wide voltage range – 175V MCOV
- Comes with a 10 year warranty.
- Is covered by many US and foreign patents.