1、C22.2 No. 4248.8-07(reaffirmed 2012)Fuseholders Part 8: Class JLegalNoticeforStandardsCanadian Standards Association (CSA) standards are developed through a consensus standards development process approved by theStandards Council of Canada. This process brings together volunteers representing varied
2、 viewpoints and interests to achieve consensusand develop a standard. Although CSA administers the process and establishes rules to promote fairness in achieving consensus, it doesnot independently test, evaluate, or verify the content of standards.Disclaimer and exclusion of liabilityThis document
3、is provided without any representations, warranties, or conditions of any kind, express or implied, including, withoutlimitation, implied warranties or conditions concerning this documents fitness for a particular purpose or use, its merchantability, or itsnon-infringement of any third partys intell
4、ectual property rights. CSA does not warrant the accuracy, completeness, or currency of anyof the information published in this document. CSA makes no representations or warranties regarding this documents compliance withany applicable statute, rule, or regulation.IN NO EVENT SHALL CSA, ITS VOLUNTEE
5、RS, MEMBERS, SUBSIDIARIES, OR AFFILIATED COMPANIES, OR THEIR EMPLOYEES,DIRECTORS, OR OFFICERS, BE LIABLE FOR ANY DIRECT, INDIRECT, OR INCIDENTAL DAMAGES, INJURY, LOSS, COSTS, OR EXPENSES,HOWSOEVER CAUSED, INCLUDING BUT NOT LIMITED TO SPECIAL OR CONSEQUENTIAL DAMAGES, LOST REVENUE, BUSINESSINTERRUPTI
6、ON, LOST OR DAMAGED DATA, OR ANY OTHER COMMERCIAL OR ECONOMIC LOSS, WHETHER BASED IN CONTRACT,TORT (INCLUDING NEGLIGENCE), OR ANY OTHER THEORY OF LIABILITY, ARISING OUT OF OR RESULTING FROM ACCESS TO ORPOSSESSION OR USE OF THIS DOCUMENT, EVEN IF CSA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE
7、S, INJURY, LOSS,COSTS, OR EXPENSES.In publishing and making this document available, CSA is not undertaking to render professional or other services for or on behalf of anyperson or entity or to perform any duty owed by any person or entity to another person or entity. The information in this docume
8、nt isdirected to those who have the appropriate degree of experience to use and apply its contents, and CSA accepts no responsibilitywhatsoever arising in any way from any and all use of or reliance on the information contained in this document.CSA is a private not-for-profit company that publishes
9、voluntary standards and related documents. CSA has no power, nor does itundertake, to enforce compliance with the contents of the standards or other documents it publishes.Intellectual property rights and ownershipAs between CSA and the users of this document (whether it be in printed or electronic
10、form), CSA is the owner, or the authorizedlicensee, of all works contained herein that are protected by copyright, all trade-marks (except as otherwise noted to the contrary), andall inventions and trade secrets that may be contained in this document, whether or not such inventions and trade secrets
11、 are protectedby patents and applications for patents. Without limitation, the unauthorized use, modification, copying, or disclosure of this documentmay violate laws that protect CSAs and/or others intellectual property and may give rise to a right in CSA and/or others to seek legalredress for such
12、 use, modification, copying, or disclosure. To the extent permitted by licence or by law, CSA reserves all intellectualproperty rights in this document.Patent rightsAttention is drawn to the possibility that some of the elements of this standard may be the subject of patent rights. CSA shall not be
13、heldresponsible for identifying any or all such patent rights. Users of this standard are expressly advised that determination of the validity ofany such patent rights is entirely their own responsibility.Authorized use of this documentThis document is being provided by CSA for informational and non
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15、paper form may be distributed only to persons who are authorized by CSA to have suchcopies, and only if this Legal Notice appears on each such copy.In addition, users may not and may not permit others to.alter this document in any way or remove this Legal Notice from the attached standard;.sell this
16、 document without authorization from CSA; or.make an electronic copy of this document.If you do not agree with any of the terms and conditions contained in this Legal Notice, you may not load or use this document ormake any copies of the contents hereof, and if you do make such copies, you are requi
17、red to destroy them immediately. Use of thisdocument constitutes your acceptance of the terms and conditions of this Legal Notice.Update No. 2CAN/CSA-C22.2 No. 4248.8-07October 2013Note: For information about the Standards Update Service or if you are missing any updates, go to shop.csa.ca or e-mail
18、 techsupportcsagroup.org.Title: Fuseholders Part 8: Class J originally published February 2007Revisions issued: Update No. 1 November 2007The following revisions have been formally approved and are marked by a vertical line in the margin on the attached replacement pages:Revised Title page, copyrigh
19、t page, and Figure 7.6CNew NoneDeleted None Update your copy by inserting these revised pages.Keep the pages you remove for reference.Association of Standardization and CertificationNMX-J-009/4248/8-ANCEFirst EditionCSA GroupCAN/CSAC22.2 No. 4248.8-07First EditionUnderwriters Laboratories Inc.UL 424
20、8-8First EditionFuseholders Part 8: Class JFebruary 28, 2007(Title Page Reprinted: October 24, 2013)ANSI/UL 4248-8-2013Approved byCommitment for AmendmentsThis standard is issued jointly by the Association of Standardization and Certification (ANCE), theCanadian Standards Association (CSA), and Unde
21、rwriters Laboratories Inc. (UL). Comments orproposals for revisions on any part of the standard may be submitted to ANCE, CSA, or UL at any time.Revisions to this standard will be made only after processing according to the standards developmentprocedures of ANCE, CSA, and UL. CSA and UL will issue
22、revisions to this standard by means of anew edition or revised or additional pages bearing their date of issue. ANCE will incorporate the samerevisions into a new edition of the standard bearing the same date of issue as the CSA and UL pages.Copyright 2007 ANCERights reserved in favor of ANCE.ISBN 1
23、-55436-045-5 2007 CSA GroupAll rights reserved. No part of this publication may be reproduced in any form whatsoever without theprior permission of the publisher.To purchase CSA Standards and related publications, visit CSAs Online Store at www.ShopCSA.caor call toll-free 18004636727 or 4167474044.C
24、opyright 2013 Underwriters Laboratories Inc.Comments or proposals for revisions on any part of the Standard may be submitted to UL at any time.Proposals should be submitted via a Proposal Request in ULs On-Line Collaborative StandardsDevelopment System (CSDS) at http:/.ULs Standards for Safety are c
25、opyrighted by UL. Neither a printed nor electronic copy of a Standardshould be altered in any way. All of ULs Standards and all copyrights, ownerships, and rights regardingthose Standards shall remain the sole and exclusive property of UL.To purchase UL Standards, visit COMM 2000 at http:/m- call to
26、ll free 18888533503.The most recent designation of ANSI/UL 4248-8 as an American National Standard (ANSI) occurredon October 24, 2013. The ANSI approval for this standard does not include the Cover Page, TransmittalPages, Title Page, Preface, or effective date information.The ANSI/UL Standard for Sa
27、fety consists of the First Edition including revisions through October 24,2013.Figure 7.6CClass J 100, 200, 400, and 600 Fuseholder Fuse bolted in placeCurrent rating offuse, amperesDimensions of a class J fuseholder fuses bolted in placeDimensions, mm (in)HIJKCenter-to-centerof studs orclearance ho
28、lesaDiameter of stud Diameter ofclearance holeMinimumunobstructedclearanceEnd of terminal tocenter of stud orclearance holemaximum100 92.07 (3.625) 6.0(0.250) 6.75(0.281) 119.84 (4.718) 9.52 (0.375)200 111.13 (4.375) 6.0(0.250) 6.75(0.281) 148.41 (5.843) 14.27 (0.562)400 133.35 (5.250) 10.0 (0.375)
29、10.5 (0.406) 183.34 (7.281) 19.93 (0.785)600 152.4 (6.0) 12.0 (0.5) 12.5 (0.531) 205.56 (8.093) 25.0 (0.984)NOTE See Figure 7.6C for dimensions B, C, and E.aTolerance 1.57 mm (0.062 in)OCTOBER 24, 2013 NMX-J-009/4248/8-ANCE CSA C22.2 NO. 4248.8-07 UL 4248-8 98 Tests8.1 General8.1.1 Types of tests8.1
30、.1.1.1 Each fuseholder shall be subjected to the tests as specified in Part 1.8.4 Verification of temperature rise8.4.3 Test method8.4.3.1 With dummy fuses in place and carrying rated current continuously, the temperature on a materialor component or electrical insulation shall not exceed the values
31、 in Table 8.4B.8.4.3.2 Dummy fuses shall be unplated copper and shall conform to the dimensions in Table 8.4A.8.4.3.3 The temperatures specified in Table 8.4A are based on an assumed ambient temperature of 25C(77F). A test may be conducted at an ambient temperature within the range of 20 40C (68 104
32、F).8.4.3.4 During a test conducted at an ambient temperature of 25C (77F), an observed temperature shallnot exceed the required value specified in Table 8.4B.8.4.3.5 If a test is conducted at an ambient temperature other than 25C (77F), an observed temperatureshall be corrected as described in Claus
33、e 8.4.3.5. Neither a corrected temperature nor an observedtemperature shall exceed the required value specified in Table 8.4B.8.4.3.6 An observed temperature shall be corrected by addition if the ambient temperature is lower than25C (77F) or subtraction (if the ambient temperature is higher than 25C
34、) of the difference between25C and the ambient temperature.8.4.3.7 If a corrected temperature exceeds the required value specified in Table 8.4B, at the request ofthe manufacturer, the test may be repeated at an ambient temperature closer to 25C (77F).Table 8.4ADimensions of dummy fusesRating inampe
35、resClass offuseShape Dimensions, mm (in)OutsidediameterWallthicknessLength Thickness Width30JTube 20.62 (0.812) 1.45 (0.057) 57.15 (2.205) 60 Tube 26.97 (1.062) 1.63 (0.064) 60.32 (2.375) 100 Blade 117.48 (4.312) 3.18 (0.125) 19.05 (0.750)200 Blade 146.05 (5.750) 4.75 (0.187) 28.58 (1.125)400 Blade
36、180.98 (7.125) 180.98 (7.125) 41.28 (1.625)600 Blade 203.2 (8.0) 9.52 (0.374) 50.8 (2.0)FEBRUARY 28, 2007NMX-J-009/4248/8-ANCE CSA C22.2 NO. 4248.8-07 UL 4248-810Update No. 1C22.2 No. 4248.8-07November 2007Note: General Instructions for CSA Standards are now called Updates. Please contact CSA Inform
37、ation Products Sales or visit www.ShopCSA.ca for information about the CSA Standards Update Service.Title: Fuseholders Part 8: Class J originally published February 2007The following revisions have been formally approved:CSA C22.2 No. 4248.8-07 originally consisted of 12 pages, each dated February 2
38、007. It now consists of the following pages: Update your copy by inserting these revised pages.Keep the pages you remove for reference.Revised Outside front cover and title pageNew National Standards of Canada text Deleted NoneFebruary 2007 312November 2007 Cover, National Standards of Canada text,
39、title page, and copyright pageBlank pageA National Standard of CanadaCAN/CSA-C22.2 No. 4248.8-07Fuseholders Part 8: Class J(approved November 2007)LegalNoticeforStandardsCanadian Standards Association (CSA) standards are developed through a consensus standards development process approved by theStan
40、dards Council of Canada. This process brings together volunteers representing varied viewpoints and interests to achieve consensusand develop a standard. Although CSA administers the process and establishes rules to promote fairness in achieving consensus, it doesnot independently test, evaluate, or
41、 verify the content of standards.Disclaimer and exclusion of liabilityThis document is provided without any representations, warranties, or conditions of any kind, express or implied, including, withoutlimitation, implied warranties or conditions concerning this documents fitness for a particular pu
42、rpose or use, its merchantability, or itsnon-infringement of any third partys intellectual property rights. CSA does not warrant the accuracy, completeness, or currency of anyof the information published in this document. CSA makes no representations or warranties regarding this documents compliance
43、 withany applicable statute, rule, or regulation.IN NO EVENT SHALL CSA, ITS VOLUNTEERS, MEMBERS, SUBSIDIARIES, OR AFFILIATED COMPANIES, OR THEIR EMPLOYEES,DIRECTORS, OR OFFICERS, BE LIABLE FOR ANY DIRECT, INDIRECT, OR INCIDENTAL DAMAGES, INJURY, LOSS, COSTS, OR EXPENSES,HOWSOEVER CAUSED, INCLUDING B
44、UT NOT LIMITED TO SPECIAL OR CONSEQUENTIAL DAMAGES, LOST REVENUE, BUSINESSINTERRUPTION, LOST OR DAMAGED DATA, OR ANY OTHER COMMERCIAL OR ECONOMIC LOSS, WHETHER BASED IN CONTRACT,TORT (INCLUDING NEGLIGENCE), OR ANY OTHER THEORY OF LIABILITY, ARISING OUT OF OR RESULTING FROM ACCESS TO ORPOSSESSION OR
45、USE OF THIS DOCUMENT, EVEN IF CSA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES, INJURY, LOSS,COSTS, OR EXPENSES.In publishing and making this document available, CSA is not undertaking to render professional or other services for or on behalf of anyperson or entity or to perform any duty owed
46、 by any person or entity to another person or entity. The information in this document isdirected to those who have the appropriate degree of experience to use and apply its contents, and CSA accepts no responsibilitywhatsoever arising in any way from any and all use of or reliance on the informatio
47、n contained in this document.CSA is a private not-for-profit company that publishes voluntary standards and related documents. CSA has no power, nor does itundertake, to enforce compliance with the contents of the standards or other documents it publishes.Intellectual property rights and ownershipAs
48、 between CSA and the users of this document (whether it be in printed or electronic form), CSA is the owner, or the authorizedlicensee, of all works contained herein that are protected by copyright, all trade-marks (except as otherwise noted to the contrary), andall inventions and trade secrets that
49、 may be contained in this document, whether or not such inventions and trade secrets are protectedby patents and applications for patents. Without limitation, the unauthorized use, modification, copying, or disclosure of this documentmay violate laws that protect CSAs and/or others intellectual property and may give rise to a right in CSA and/or others to seek legalredress for such use, modification, copying, or disclosure. To the exten
