1、AMSC N/A FSC 5920 INCH-POUND MIL-DTL-24646/11B 29 October 2008 SUPERSEDING MIL-DTL-24646/11A 17 May 2002 DETAIL SPECIFICATION SHEET FUSE BOXES, FEEDER DISTRIBUTION, WITH SWITCHES, WATERTIGHT (3 FEET), 125 VOLTS, ALTERNATING CURRENT, SINGLE AND THREE PHASE BUSES, SINGLE AND DOUBLE FEEDERS, SINGLE PHA
2、SE BRANCHES, 0-30 AMPERE MIDGET FUSES, AND SNAP SWITCHES, SYMBOLS 645, 645.1, 649.1 AND 650.1 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
3、 MIL-DTL-24646. FIGURE 1. Fuse box assembly, typical. Item No. 01, 02, 03, 04 (Symbol 649.1 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
4、 IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24646/11B 2 DIMENSIONS (REF) SYMBOL NO A B C 645 16.38 13.38 4.62 645.1 16.38 13.38 4.62 649.1 16.38 13.38 4.62 650.1 16.38 15.38 4.62 FIGURE 2. Enclosure, overall dimensions. Item No. 05, 06, 07 (Symbols
5、645, 645.1, 649.1, and 650.1) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24646/11B 3 DIMENSIONS SYMBOL NO A B 645 11.44 5.72 645.1 11.44 5.72 649.1 11.44 5.72 650.1 13.44 6.72 FIGURE 3. Mounting dimensions, ref. (Symbols 645, 645.1, 649.
6、1, 650.1) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24646/11B 4 SIDE VIEW FIGURE 4. Cover assembly, typical. (Symbols 645, 645.1, 649.1, and 650.1) 1.121.125.005.00BOTTOM VIEW Provided by IHSNot for ResaleNo reproduction or networking p
7、ermitted without license from IHS-,-,-MIL-DTL-24646/11B 5 FIGURE 5. Fuse cover assembly, typical. (Symbols 645, 645.1, 649.1 and 650.1) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24646/11B 6 DIMENSIONS (MAX) SYMBOL NO A B 645. 12.75 5.88
8、 645.1 12.75 5.88 649.1 12.75 5.88 650.1 12.75 10.75 FIGURE 6. Fuse block assembly, typical. Item No. 09, 10, 11, 12 (Symbols 645, 645.1, 649.1 and 650.1) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24646/11B 7 A. Four single-phase branch
9、es, B. Four single-phase branches, single feeder (Symbol 645) Double feeder (Symbol 645.1) C. Four single-phase branches D Eight single-phase branches (Symbol 649.1) (Symbol 650.1) FIGURE 7. Wiring diagrams. Item No. 09, 10, 11, 12 Provided by IHSNot for ResaleNo reproduction or networking permitted
10、 without license from IHS-,-,-MIL-DTL-24646/11B 8 REQUIREMENTS Symbol numbers: See table I. Design: Electrical rating: 125 volts alternating current, 0-10 ampere, 60 hertz. Dimensions and configuration: See figures 1, 2, 3, 4, 5 and 6. Wiring diagrams: See figure 7. Mounting dimensions: See figure 3
11、 Degree of enclosure: Watertight (3 feet). Nonmagnetic enclosure: Nonmagnetic enclosures shall be brass in accordance with MIL-E-24142. Attaching hardware shall be nonmagnetic and shall have a magnetic permeability not greater than 2.0. Designation and marking: See MIL-DTL-24646. Parts: The parts l
12、isted in table II and specified 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 part numbers and general information. Supersedes Military part no.
13、Symbol no. Weight in pounds No. of circuits Feeder MCM Branch MCM Fuse size Bus bar size Drawing no. Type M24646/11- 001 645 26.8 4 14 4 midget 0-30A 0.62 x 0.12 9-S-74196 18-A M24646/11- 002 645.1 26.8 4 14 4 midget 0-30A 0.62 x 0.12 9-S-74196 18-B M24646/11- 003 649.1 28.2 4 14 4 midget 0-30A 0.62
14、 x 0.12 9-S-74197 D-12A M24646/11- 004 650.1 36.2 8 14 4 midget 0-30A 0.62 x 0.12 9-S-74201 22-A Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24646/11B 9 TABLE II. Parts list. QTY M /- Item no. 1/ Description 001 002 003 004 Material/ spec
15、ification Remarks 01 Fuse box assembly (sym 645) - MIL-DTL-24646/11 See figure 1 02 Fuse box assembly (sym 645.1) - MIL-DTL-24646/11 See figure 1 03 Fuse box assembly (sym 649.1 - MIL-DTL-24646/11 See figure 1 04 Fuse box assembly (sym 650.1) - MIL-DTL-24646/11 See figure 1 05 2/ Enclosure (10 x 13
16、x 3) 1 1 1 4/ M24142/6-004 See figures 2 and 4 06 2/ Enclosure (12 x 13 x 3) 1 4/ M24142/6-008 See figures 2 and 4 07 Fuse cover assembly 1 1 1 1 MIL-DTL-24646/11 See figure 5 08 Wiring diagram 1 MIL-E-2036 See figure 7 09 Wiring diagram 1 MIL-E-2036 See figure 7 10 Wiring diagram 1 MIL-E-2036 See f
17、igure 7 11 Wiring diagram 1 MIL-E-2036 See figure 7 12 Fuse clip (midget 30A) 16 16 16 32 A-A-55507/1-04 N/A 13 Snap switch 4 4 4 8 M15291/3-002 N/A 14 Identification plate 1 1 1 1 Brass, ASTM B36/B36M B121.B121M N/A 15 Information plate 4 4 4 8 Brass, ASTM B36/B36M B121.B121M See figures 2 16 Switc
18、h information plate 3/ 4 4 4 8 Brass, ASTM B36/B36M B121.B121M See figures 2 1/ Item numbers after the figure titles are the same as the item numbers shown in this table. 2/ Enclosure is same as MIL-E-24142/6, except for inside depth which is 3 inches instead of 5 inches shown. 3/ As an option, the
19、switch information (“OFF”) may be metal stamped onto the covers, in lieu of being placed on an information plate. 4/ Enclosures shall be furnished with flat cover. Referenced documents. In addition to MIL-DTL-24646, this document references the following: MIL-E-2036 MIL-E-24142/6 ASTM B36/B36M ASTM
20、B121/B121M Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24646/11B 10 The margins of this specification sheet are marked with vertical lines to indicate where changes from the previous issue were made. This was done as a convenience only an
21、d the Government assumes no liability whatsoever for any inaccuracies in these notations. Bidders and contractors are cautioned to evaluate the requirements of this document based on the entire content irrespective of the marginal notations and relationship to the last previous issue. Custodian: Pre
22、paring activity: Navy - SH DLA - CC DLA - CC (Project 5920-2008-027) 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-,-,-
