Buyer Beware: SPD and UL Markings? Are You Buying or Selling the Right ProductDownload Now
Significant changes have taken place regarding Surge Protection Devices and UL 1449. With the changes has come different product marking requirements to identify those testing and product changes. Manufacturers of SPD equipment have long been testing to UL 1449 but only recently have such significant changes taken place regarding a whole product categories testing and performance.
An updated UL 1449 standard was released titled UL Standard for Safety for Surge Protective Devices, UL 1449 Third Edition, and was dated September 29, 2006. The result was that all manufacturers were required to retest their SPD products to ensure compliance before 9/29/2009.
The easiest way to notice a new SPD product versus an older product that still may be in inventory is the new gold UL holographic label on the product. The new label must have the SPD and not TVSS which was used during the later part of UL 1449- 2 edition.
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