1、INCH-POUND MIL-DTL-21604/7C 27 March 2009 SUPERSEDING MIL-DTL-21604/7B 27 June 2003 DETAIL SPECIFICATION SHEET SWITCH, ROTARY, MULTIPOLE AND SELECTOR, 10 AMPERE, STYLES JR 304 AND JRM 300 This specification is approved for use by all Depart- ments and Agencies of the Department of Defense. The compl
2、ete requirements for acquiring the switches described herein shall consist of this specification and the latest issue of MIL-DTL-21604. FIGURE 1. Styles JR 304 AND JRM 300 switches. AMSC N/A FSC 5930 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MI
3、L-DTL-21604/7C 2 Inch mm Inch mm .06 .062 .125 .141 .145 .164 .248 .250 .25 .266 1.52 1.57 3.18 3.58 3.68 4.17 6.30 6.35 6.4 6.76 .266 .371 .375 .38 .50 .63 1.50 2.28 2.81 3.25 6.76 9.42 9.53 9.6 12.7 16.0 38.10 57.91 71.37 82.55 NOTES: 1. Dimensions are in inches. 2. Metric equivalents (to the near
4、est 0.01 mm) are given for general information only and are based upon 1 inch = 25.4 mm. 3. Unless otherwise specified, tolerances are .016 (0.41 mm) for two-place decimals and 0.005 (0.13 mm) for three-place decimals. 4. Detent mechanism in JR 304; spring return in JRM 300 FIGURE 1. Styles JR 304 a
5、nd JRM 300 switches - Continued. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-21604/7C 3 NOTE: Viewed from the handle end. FIGURE 2. Rotor contact configuration and handle positions. REQUIREMENTS: Dimensions and configuration: See figure 1
6、, figure 2, and table I. Angle of throw: 45 degrees. Switching action: JR 304: Detent. JRM 300: Switch provides for spring return from position 6 to position 1, and from position 4 to position 1. Internal stops and stop mechanisms are not available and the use of external stops is required to limit
7、travel to a lesser number of positions. Electrical loads: AC current: 10 amperes. Voltage: 125 volts (at 60 - 400 Hz, 0.80 inductive power factor). Temperature rise: 30C maximum. Contact material: Rotor: Silver-overlay phosphor bronze. Stator: Silver-overlay copper. Barriers: See figure 1. Terminal
8、marking: See figure 1. Stop marking: See figure 1. Qualification samples: See table II. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-21604/7C 4 TABLE I. Type designation and switching characteristics. Component Style 1/ Rotor designation 2
9、/ No. of sections Operating positions Approx. weight (ounces) Maximum rotational torque (inch-pounds) S S JR 304 JRM 300 2 2 3 3 8 3 17 17 15 30 1/ Style and type designations are synonymous for JR 304 and JRM 300, respectively. 2/ For rotor designation, see figure 2. TABLE II. Qualification test sa
10、mple. Sample switch Test number 1/ Sample switch Test number S2JR304 S2JR304 S2JR304 S2JR304 S2JR304 S2JR304 1 2 3 4 5 6 S2JRM300 S2JRM300 S2JRM300 S2JRM300 S2JRM300 S2JRM300 1 2 3 4 5 6 1/ Test numbers in accordance with table II of MIL-DTL-21604. 2/ For group qualifications, see 4.5.1. The margins
11、 of this specification are marked with vertical lines to indicate where modifications from this amendment 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 r
12、equirements of this document based on the entire content irrespective of the marginal notations. Reference Documents: MIL-DTL-21604 Custodians: Preparing activity: Navy - SH DLA - CC DLA - CC (Project 5930-2009-010) 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-,-,-
