1、AMSC N/A FSC 5920 INCH-POUND MIL-DTL-24646/4B 29 October 2008 SUPERSEDING MIL-DTL-24646/4A 17 May 2002 DETAIL SPECIFICATION SHEET FUSE BOXES, FEEDER DISTRIBUTION, TOTALLY ENCLOSED, 450 VOLTS, ALTERNATING CURRENT, THREE PHASE BUSES, SINGLE AND THREE PHASE BRANCHES, 0-30 AND 31-60 AMPERE FUSES, SYMBOL
2、S 543, 544, 545, 546 AND 547 This specification is approved for use by all Departments and Agencies of the Department of Defense. The requirements for acquiring the product described herein shall consist of this specification sheet and MIL-DTL-24646. FIGURE 1. Fuse box assembly, typical. Item No. 01
3、, 02, 03, 04, 05 (Symbol 543 shown) NOTES: 1. Dimensions are in inches. 2. Unless otherwise specified herein, tolerances shall be as follows: Two place decimals - plus or minus 0.02. Three place decimals - plus or minus 0.005.Provided by IHSNot for ResaleNo reproduction or networking permitted witho
4、ut license from IHS-,-,-MIL-DTL-24646/4B 2 DIMENSIONS (REF) SYMBOL NO A B C 543 14.16 12.16 4.75 544 18.16 12.16 4.75 545 22.16 12.16 4.75 546 16.16 14.16 4.75 547 22.16 14.16 4.75 FIGURE 2. Enclosure, overall dimensions. Item No. 06, 07, 08, 09, 10 (Symbols 543, 544, 545, 546 and 547) Provided by I
5、HSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24646/4B 3 DIMENSIONS SYMBOL NO A B C D 543 5.50 11.00 5.25 10.50 544 7.00 14.00 5.25 10.50 546 6.00 12.00 6.25 12.50 A. Symbols 543, 544 and 546. B. Symbols 545 and 547. DIMENSIONS SYMBOL NO A B 545 5.25 10
6、.50 547 6.25 12.50 FIGURE 3. Mounting dimensions, ref. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24646/4B 4 FIGURE 4. Fuse block assembly, typical. Item No. 11, 12, 13, 14, 15 (Symbols 543, 544, 545, 546 and 547) DIMENSIONS (MAX) SYMBOL
7、 NO A B C 543 7.87 7.12 2.80 544 11.87 7.12 2.80 545 16.37 7.12 2.70 546 8.87 8.38 2.80 547 14.37 8.38 2.80 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24646/4B 5 A. Two 3-phase branches B. Two 3-phase branches (Symbol 543) (Symbol 546) C
8、. Four 3-phase branches D. Four 3-phase branches (Symbol 544) (Symbol 547) FIGURE 5. Wiring diagrams. Item No. 16, 17, 18, 19, 20 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24646/4B 6 E. Six single-phase branches F. Six 3-phase branches
9、(Symbol 544) (Symbol 545) FIGURE 5. Wiring diagrams. Item No. 16, 17, 18, 19, 20 - Continued. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24646/4B 7 REQUIREMENTS Symbol numbers: See table I. Design: Electrical rating: 450 volts alternatin
10、g current, 0-30 and 31-60 ampere, 60 hertz. Dimensions and configuration: See figures 1, 2, 3 and 4. Wiring diagrams: See figure 5. Mounting dimensions: See figure 3. Degree of enclosure: Totally enclosed. Designation and marking: See MIL-DTL-24646. Parts: The parts listed in table II and specified
11、in MIL-DTL-24646 shall be used in the construction of the fuse boxes specified herein. General information: Military part numbers and general information are as specified in table I. TABLE I. Military parts number and general information. Supersedes Military part no. Symbol no. Weight in pounds No.
12、of circuits Feeder MCM Branch MCM Fuse size Bus bar size Drawing no. Type M24646/4- 001 543 14.0 2 75 40 0-30A 1.00 x 0.25 9-S-4875-L - M24646/4- 002 544 23.1 4 6 75 40 0-30A 0-30A .75 x .25 9-S-4876-L - M24646/4- 003 545 28.8 6 75 40 0-30A .75 x .19 9-S-4877-L - M24646/4- 004 546 28.6 2 200 40 31-6
13、0A 1.00 x .25 9000-S-6202-73215 E E-1 M24646/4- 005 547 40.8 4 200 40 31-60A 1.00 x .25 9000-S-6202-73216 - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24646/4B 8 TABLE II. Parts list. QTY M /- Item no. 1/ Description 001 002 003 004 005
14、Material/ specification Remarks 01 Fuse box assembly (sym 543) - MIL-DTL-24646/4 See fig. 1 02 Fuse box assembly (sym 544) - MIL-DTL-24646/4 See fig. 1 03 Fuse box assembly (sym 545 - MIL-DTL-24646/4 See fig. 1 04 Fuse box assembly (sym 546) - MIL-DTL-24646/4 See fig. 1 05 Fuse box assembly (sym 547
15、) - MIL-DTL-24646/4 See fig. 1 06 Enclosure (12 x 14 x 4) 1 M24142/16-004 See fig. 2 07 Enclosure (12 x 18 x 4) 1 M24142/16-006 See fig. 2 08 Enclosure (12 x 22 x 4) 1 M24142/18-004 See fig. 2 09 Enclosure (14 x 22 x 4) 1 M24142/18-005 See fig. 2 10 Enclosure (14 x 16 x 4) 1 9-S-73408 Type E See fig
16、. 4 11 Fuse block assembly 1 MIL-DTL-24646/4 See fig. 4 12 Fuse block assembly 1 MIL-DTL-24646/4 See fig. 4 13 Fuse block assembly 1 MIL-DTL-24646/4 See fig. 4 14 Fuse block assembly 1 MIL-DTL-24646/4 See fig. 4 15 Fuse block assembly 1 MIL-DTL-24646/4 See fig. 4 16 Wiring diagram 1 MIL-E-2036 See f
17、ig. 5 17 2/ Wiring diagram 2 MIL-E-2036 See fig. 5 18 Wiring diagram 1 MIL-E-2036 See fig. 5 19 Wiring diagram 1 MIL-E-2036 See fig. 5 20 Wiring diagram 1 MIL-E-2036 See fig. 5 21 Fuse clip (0-30A) 12 24 36 - - A-A-55507/1-06 N/A 22 Fuse clip (31-60A) - - - 12 24 A-A-55507/1-08 N/A 23 Identification
18、 plate 1 1 1 1 1 Brass, ASTM B36/B36M B121/B121M N/A 24 Information plate 2 2 4 4 6 Brass, ASTM B36/B36M B121/B121M N/A 1/ Item numbers after the figure titles are the same as the item numbers shown in this table. 2/ Unless otherwise specified, both single phase and three phase wiring diagrams shall
19、 be furnished. Referenced documents. In addition to MIL-DTL-24646, this document references the following: MIL-E-2036 ASTM B36/B36M ASTM B121/B121M Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24646/4B 9 The margins of this specification s
20、heet are marked with vertical lines to indicate where changes from the previous issue were made. This was done as a convenience only and the Government assumes no liability whatsoever for any inaccuracies in these notations. Bidders and contractors are cautioned to evaluate the requirements of this
21、document based on the entire content irrespective of the marginal notations and relationship to the last previous issue. Custodian: Preparing activity: Navy - SH DLA - CC DLA - CC (Project 5920-2008-020) NOTE: the activities listed above were interested in this document as of the date of this document. Since organizations and responsibilities can change, you should verify the currency of the information above using the ASSIST Online database at http:/assist.daps.dla.mil. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
