World Products Overvoltage Protection Components Thermally Protected Varistors EVTD Series

EVTD’s are intended, in conjunction with appropriate enclosure design, to help facilitate TVSS module compliance to UL1449. Under extreme abnormal over-voltage conditions, some units will exhibit substantial heating, arcing and venting prior to opening. Modules should be designed to contain this possibility.


  • WPI’s thermally protected MOVs
  • High energy handling capability
  • UL1449 and CUL 4th Edition recognized
  • Multiple diagnostic options (micro-switch locations both on top & bottom, on top only or on bottom only)
  • Wide voltage range available: 50VAC ­ 550VA
  • Industry standard footprint
  • RoHS compliant
  • Exceeds industry standard operating and storage temperatures for this type of device. Rated at -40ºC to +85º
  • U.S. Patent No. US 9,165,702 B2

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Michael Steves
Michael Steves
Product Management +49 2152 8955-211