The effect of using different fuses on the safety of the unit for the end-user should be validated by empirical test data.
Depending on the NRTL and/or NCB that has issued recognition or certification, and how the component is described in the TCF or CDF, you may have to submit as an alternate construction. If the fuse is user-replaceable, the Product Safety Engineer should test the unit using various fuses of same ratings, as stated on unit's labels and in the installation instructions, where other parameters are not similar. Not necessarily required by most safety standards in the LVD, but just a good "due diligence" thing to do... Typically, a CB, CDF, or FUS report will only have the fuse's "basic" ratings and agency recognitions. luck, Brian -----Original Message----- From: [email protected] [ mailto:[email protected]] Sent: Monday, January 26, 2004 6:40 AM To: [email protected] Subject: Fuses Good day all, I have a question regarding fuses and their interchangeability relative to EN61010. If I want to substitute a 1.6A, 250VAC,slow-blow, with the same opening time, same Interrupting Rating, VDE, UL, SEMKO approved fuse with another with the same ratings and approvals EXCEPT that the nominal cold resistance and nominal melting temperatures are slightly different (one more specifically designed for surge) is this interchange allowed under 61010? I can find no test or specification that would be influenced by this. The overload test should respond much the same. Any insight would be appreciated Regards, Lisa Lisa A. Cefalo, CRE
