UL1449 2nd Edition test requirements affect all TVSS products manufactured after February 9, 2007

Major updates to Underwriters Laboratories Standard for Safety for Transient Voltage Surge Suppressors (UL 1449) went into effect on February 9, 2007 and affect all Transient Voltage Surge Suppressors (TVSS) manufactured after this date. One of the major safety tests contained in UL 1449 is called the abnormal overvoltage test.  The purpose of this test is to ensure that a TVSS will not create a shock or fire hazard even when misapplied or subjected to sustained, long-term, over voltages (i.e. not surge events). 

In order to manufacture a UL 1449 listed product after February 9, 2007 a TVSS product design must have passed four additional sustained abnormal overvoltage tests with currents limited to 10 amperes, 100 amperes, 500 amperes and 1000 amperes.  These tests are run for up to seven hours and to successfully pass the test, the TVSS must not create a fire or shock hazard during or after the test.

Eaton is pleased to announce that all their TVSS lines, including the Cutler-Hammer CPS Visor Series and CVL product families, the Powerware PXL and PVL, and the Innovative Technology Protector and Equalizer, have been tested to UL1449 2nd Edition as updated, and fully comply with this updated safety standard. Click here to view our online UL Certification certificate on the Underwriters Laboratories web site. For more information on Eaton’s TVSS products, please visit www.eaton.com/tvss.