Solutions / Surge Protection / AC Power / Sandwich Block
Sandwich Block
The patented, UL-listed Sandwich BlockĀ® for AC power surge protection effectively protects where other surge suppression devices fail. The Sandwich Block offers the lowest let-through voltage in the industry which ensures equipment is protected from damaging electrical surges. The Sandwich Block is made by placing large, patented MOVs between heavy, aircraft-grade, aluminum plates that act as heat sinks. Each Sandwich Block is then assembled into our heavy duty equipment boxes and ready for your AC power application. Contact us to order your Sandwich Block solution.
Benefits of Sandwich Block Systems
- Reliably protects against lightning induced transients
- Low risk of punch through
- Runs very cool, even under continual and severe stress, because of innovative heat-sink design.
- The lowest let-through voltage of any surge device
- No circuit boards, impedance-causing wire, or solder in the current carrying path
- More efficient design with 1/3 fewer parts allows the Sandwich Block system to use far less space in equipment rooms
Some applications include
- Used to protect critical AC electrical service entrances and other services
- heavy industrial, process plants
- TV & radio broadcast sites
- commercial, data centers
- 911 centers, schools, hospitals, public works facilities
- and any sites requiring fail-safe protection
Additional Resources and Documentation
- Learn more: Sandwich Block Product Sheet (366 KB
)
- View All AC Power Surge Protection Products

