Scott, It's been many years since I looked into this, but I seem to recall that at the time - UL was not approving any 5x20mm fuses. Has that changed? I remember that the characteristics were different, not just the size. Has this also changed, do they make both sizes with UL characteristics, or does UL accept the Int'l characteristics? Just curious. Remember, I said it's been many years....
Best regards, Stephen C. Phillips >Date: 22 Oct 1997 08:32:40 -0400 >From: "DouglasScott" <[email protected]> >Subject: RE: Re[2]: Concerning Fuses >To: [email protected] >Cc: "emc-pstc" <[email protected]> >X-Mailer: Mail*Link SMTP-MS 3.0.2 >Sender: [email protected] >Reply-To: "DouglasScott" <[email protected]> >X-Resent-To: Multiple Recipients <[email protected]> >X-Info: Help requests to [email protected] >X-Info: [Un]Subscribe requests to [email protected] >X-Moderator-Address: [email protected] > >Bogdan, > >Seems to me I saw that type of fuseholder once a long time ago. Can't recall where and don't know whatever happened to it. > >As for me, I just use 5x20 mm fuses everywhere. I provide spares in spares kits to field service types. As we ship world wide, we stopped having problems once we switched and included them in the spares kits. > >Scott >[email protected] >___________________________________________________________________________ ____ >From: [email protected] on Tue, Oct 21, 1997 6:10 PM >Subject: Re[2]: Concerning Fuses >To: [email protected]; Farnsworth,Heber > > I heard that both fuses are acceptable if they are arranged in series, > i.e. UL/CSA 1.25x0.25 and IEC 5x20, in the hope that the fuse with the > politically correct characteristics will blow in the appropriate > region. > This gave me a crazy idea, which could reduce the cost of compliance, > namely mount the fuseholders in a fashion where the footprints of the > fuses would cross, i.e. either one could be placed in the proper > holder, but not both at the same time. > Is this idea worthy of being patented? > Bogdan. > [email protected] > > P.S.: All appropriate and legal disclaiamers apply!! > > >______________________________ Reply Separator _________________________________ >Subject: RE: Concerning Fuses >Author: "Farnsworth,Heber" <[email protected]> at Internet >Date: 10/20/97 5:45 PM > > >It is true that UL/CSA fuses have different fuse characteristics than >European fuses, and are not interchangeable (lengthy discussion left >out.) However, either can be used and either will protect if used >correctly. >UL does "Recognize" some brands of European-style fuses. Check with your >test house(s) to see what they'll accept. > >The potential problem is availability of replacement fuses: American >fuses are not widely available in Europe, and 5x20 mm fuses are scarce >in the US. Worse, there are some 5x20 mm fuses in America built to >UL/CSA fuse curves; somebody's bad idea. > ---------- >From: Rick Busche >To: [email protected] >Subject: Concerning Fuses >Date: Monday, October 20, 1997 6:46AM > >I have a product which uses clip-in fuses on the primary side of a power >supply card. In order for this supply to be used in the US and European >markets I am looking for a fuse solution compatible with all regulatory >requirements. It is my understanding that UL/CSA require different >performance characteristics than found in the 5mm European styles. > >1. Can US fuses be used to meet the regularly requirement of >Europe? >2. Are 5mm fuses REQUIRED to meet world wide applications? If so >must they also be used in secondary circuits? >3. It has been suggested that both fuses could be put in series. Is >this a solution? > >Thanks in advance... > >Rick Busche >Evans & Sutherland >[email protected] > > >------------------ RFC822 Header Follows ------------------ >Received: by macgtwy.ecrm.com with SMTP;21 Oct 1997 18:10:25 -0400 >Received: by highlight.ecrm.com (AA13908); Tue, 21 Oct 97 17:15:10 EDT >Received: from ruebert.ieee.org by maildrop.ecrm.com (RAA07892); Tue, 21 Oct 1997 17:10:57 -0400 (EDT) >Received: (from daemon@localhost) > by ruebert.ieee.org (8.7.5/8.7.3) > id MAA24808 for emc-pstc-list; Tue, 21 Oct 1997 12:33:06 -0400 (EDT) >From: [email protected] >Date: Tue, 21 Oct 97 08:35:11 PST >Encoding: 56 Text >Message-Id: <[email protected]> >To: [email protected], "Farnsworth,Heber" <[email protected]> >Subject: Re[2]: Concerning Fuses >Sender: [email protected] >Precedence: bulk >Reply-To: [email protected] >X-Resent-To: Multiple Recipients <[email protected]> >X-Listname: emc-pstc >X-Info: Help requests to [email protected] >X-Info: [Un]Subscribe requests to [email protected] >X-Moderator-Address: [email protected] > >
