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  • UL 1449 Rated Surge Protection
    UL 1449 is a standard that covers transient voltage surge suppressors (TVSS) intended for permanently connected, cord-connected and direct plug-in applications. UL Standard 1449 established various values for Suppressed Voltage Ratings (SVR). This specification includes a requirement that surge
  • SPD Industry Code Changes (.pdf)
    Rating. SPD VOLTAGE PROTECTION. One of the primary ratings of an SPD has been the surge voltage. RATING (VPR). rating (SVR), which has been used to determine the protection an. SPD can provide. This SVR has changed from the first edition of. 330. UL 1449 to the second edition of UL 1449. To avoid
  • Manufacturing & Test Standards for SPD's
    procedure for EMI/RFI filters. This is a safety only standard, not. a performance standard. Some surge suppressors include a capacitive filter as part of the. suppression circuit. UL 67 - 2000 Panelboards. This UL listing is for panelboard interiors. This is a safety listing describing clearances, heat
  • Protecting the Universal Serial Bus from Over Voltage and Overcurrent Threats (.pdf)
    . ML1. PG1. PTC1. 1The 1206L series is available in ratings ranging from. r. l. d. VBUS. .5A to 1.5A. Samples are available by contacting. o. electronics@littlefuse.com. D+. (UL,CSA,TÜV approvals pending.). D-. Outside W. GND. ML2. PG2. GND. Shield. D+. Table 1. Symbol Definition. D-. Shield (Chassis

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