Very nice, thanks. Now I may need to convince my client to stop using Slow Blow on international shipments.
-Doug Laporte, Colorado USA LinkedIn <https://www.linkedin.com/in/coloradocomplianceguy/> (UTC -07:00) Mountain Time (US-MST) On Wed, Mar 2, 2022 at 3:34 PM Scott Aldous < 00000220f70c299a-dmarc-requ...@listserv.ieee.org> wrote: > Hi Doug, > > As the link Rich provided from Littelfuse indicates, the international > symbols come from IEC 60127-1. See the last page of this preview > <https://www.sis.se/api/document/preview/568043/>, section 6.1. > > On Wed, Mar 2, 2022 at 2:22 PM Richard Nute <ri...@ieee.org> wrote: > >> >> >> >> >> Here is some info: >> >> >> >> https://www.swe-check.com.au/pages/learn_fuse_markings.php >> >> >> https://www.littelfuse.com/~/media/files/littelfuse/technical-resources/documents/reference-documents/littelfuse_5x20mm-iec-fuse-cap-marking_guide.pdf >> >> >> >> Rich >> >> >> >> >> >> >> >> *From:* Brian Kunde <bkundew...@gmail.com> >> *Sent:* Wednesday, March 2, 2022 1:08 PM >> *To:* EMC-PSTC@LISTSERV.IEEE.ORG >> *Subject:* Re: [PSES] Fuse designations >> >> >> >> I do not know where the information I have originally came from, but I >> got this and have been using this for over 30 years: >> >> >> >> FF = Very Fast Acting >> >> F = Fast Acting (Common) >> >> M = Medium Time Lag >> >> T = Time Lag (Common) >> >> TT = Long Time Lag >> >> >> >> I got this from Bud Lang who was our Safety Guru at Heath Kit many years >> ago. >> >> >> >> The Other Brian >> >> >> >> On Tue, Mar 1, 2022 at 5:33 PM Douglas E Powell <doug...@gmail.com> >> wrote: >> >> All, >> >> >> >> Over the years, I've seen various ways people include a caution or >> warning, in their user documents or product labels, for replacement fuses. >> Similar to: "replace only with same type and rating of fuse"; followed by >> a code: T1.6AH250V. And for those who may not understand the code, they may >> sometimes add in parentheses some variant of "(1.6 Amp time-lag, ~250V, >> high breaking capacity)". >> >> >> So now to my question, US manufacturers sometimes use the phrase >> "SLO-BLO" or "Slow Blow" instead of Time-Lag or Time-Delay. Are these terms >> commonly used internationally and if so, are they clearly understood? >> >> >> >> I took some time to look up SLO-BLO and found it's a registered trademark >> for Littelfuse going back to 1957, and it has been continuously renewed >> since that time. >> >> >> Incidentally, a German Engineer once told me the way he would designate a >> fuse type for a variety of tripping characteristics was in this order from >> very slow to very fast: TT1.0A250V, T1.0A250V, 1.0A250V, F1.0A250V, >> FF1.0A250V. >> >> >> >> Thanks, -Doug >> >> >> >> >> >> Douglas E Powell >> >> Laporte, Colorado USA >> >> >> >> (UTC -07:00) Mountain Time (US-MST) >> >> >> >> >> >> - >> ---------------------------------------------------------------- >> >> This message is from the IEEE Product Safety Engineering Society emc-pstc >> discussion list. To post a message to the list, send your e-mail to < >> emc-p...@ieee.org> >> >> All emc-pstc postings are archived and searchable on the web at: >> http://www.ieee-pses.org/emc-pstc.html >> >> Attachments are not permitted but the IEEE PSES Online Communities site >> at http://product-compliance.oc.ieee.org/ can be used for graphics (in >> well-used formats), large files, etc. >> >> Website: http://www.ieee-pses.org/ >> Instructions: http://www.ieee-pses.org/list.html (including how to >> unsubscribe) <http://www.ieee-pses.org/list.html> >> List rules: http://www.ieee-pses.org/listrules.html >> >> For help, send mail to the list administrators: >> Scott Douglas <sdoug...@ieee.org> >> Mike Cantwell <mcantw...@ieee.org> >> >> For policy questions, send mail to: >> Jim Bacher <j.bac...@ieee.org> >> David Heald <dhe...@gmail.com> >> > > > -- > Scott Aldous | Regulatory Compliance Manager | scottald...@google.com | > 650-253-1994 > > - > ---------------------------------------------------------------- > > This message is from the IEEE Product Safety Engineering Society emc-pstc > discussion list. To post a message to the list, send your e-mail to < > emc-p...@ieee.org> > > All emc-pstc postings are archived and searchable on the web at: > http://www.ieee-pses.org/emc-pstc.html > > Attachments are not permitted but the IEEE PSES Online Communities site at > http://product-compliance.oc.ieee.org/ can be used for graphics (in > well-used formats), large files, etc. > > Website: http://www.ieee-pses.org/ > Instructions: http://www.ieee-pses.org/list.html (including how to > unsubscribe) <http://www.ieee-pses.org/list.html> > List rules: http://www.ieee-pses.org/listrules.html > > For help, send mail to the list administrators: > Scott Douglas <sdoug...@ieee.org> > Mike Cantwell <mcantw...@ieee.org> > > For policy questions, send mail to: > Jim Bacher <j.bac...@ieee.org> > David Heald <dhe...@gmail.com> > - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <emc-p...@ieee.org> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <sdoug...@ieee.org> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com>
