QMB Plug-On Surgelogic^®
TVSS Device
The QMB TVSS unit is a high-performance modular surge protective device based on the IMA TVSS platform. These units are available factory assembled or individually for retrofit applications. They plug easily onto the bus stack of a QMB Panelboards or Switchboards.

• Versatility. QMB plug-on units with Surgelogic TVSS can be installed in QMB panelboards and switchboards. Peak surge current ratings per phase range from 120kA to 240kA.
• Compact Design. The Integrated QMB TVSS unit requires only 9“ of full width mounting space. Much less space than an externally mounted TVSS device.
• 200 kA SCCR Meets Requirements of the 2002 NEC Change. QMB plug-on units with Surgelogic TVSS meet the new 2002 NEC, and 2003 UL 1449 Short Circuit Current Rating requirements. The QMB TVSS unit has been tested up to 200 kA SCCR to comply with 2002 NEC and 2003 UL changes.
• Retrofit Ready. The QMB plug-on TVSS units are suitable for retrofit in all existing QMB panelboards and switchboards. This equates to over 30 years of installed base having retrofit potential.
• Labor and Money Savings. Easily installs in less than one minute and reduces the amount of cable and conduit required compared to wall mounted TVSS units. Plus all phase connections are pre-wired at the factory.
• Application Flexibility. The QMB plug-on TVSS unit is suitable for service entrance and non-service entrance application.
• Competitively Priced. The QMB plug-on TVSS unit has been price positioned at market levels that are competitive with comparable units.
  Lower Installed Cost. The total installed cost of a QMB plug-on TVSS unit is approximately $400 less than a comparable externally mounted TVSS that has been installed and wired by the electrical contractor.
• Lower Installed Cost. The total installed cost of a QMB plug-on TVSS unit is approximately $400 less than a comparable externally mounted TVSS that has been installed and wired by the electrical contractor.