F61C500V20AS

INCH-POUND MIL-PRF-15160/61J 11 October 2017 SUPERSEDING MIL-PRF-15160/61H 3 May 2012 

## PERFORMANCE SPECIFICATION SHEET 

## FUSES, INSTRUMENT, POWER, AND TELEPHONE (NONINDICATING), STYLE F61 

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-PRF-15160. 

|Ltr|Inches|Inches|mm|mm|
|---|---|---|---|---|
||Min|Max|Min|Max|
|A|1.969|2.031<br>50.01|50.01|51.59|
|B|.556|.577<br>14.12|14.12|14.66|
|C|.485|.515<br>12.|12.32|13.05|



NOTES: 

1. Dimensions are in inches. 

2. Metric equivalents are given for general information only. 

FIGURE 1.  Style F61, characteristic C. 

AMSC N/A 

FSC 5920 

## MIL-PRF-15160/61J 

REQUIREMENTS: 

Interface and physical dimensions:  See figure 1. 

Case:  Glass melamine. 

Ferrule:  Brass, copper, bronze, or copper alloy. 

Finish:  Nickel or bright alloy plate, silver plated when specified. 

Terminal strength:  MIL-STD-202-211, test condition E, 2 inch-pound torque between ferrules and fuse body. 

Electrical: 

Current rating:  See table I. 

Current carrying capacity:  110 percent of rated current. 

Voltage rating:  See table I. 

Characteristic:  Characteristic C only. 

Overload interrupt:  Within 1 hour at 135 percent of rated current; and within 2 minutes at 200 percent. 

Short circuit interrupt:  200,000 A at 500 V ac (symmetrical), 150,000 A at 500 V dc. 

Shock:  MIL-STD-202-207, HI shock. 

Vibration:  MIL-STD-202-204, test condition A (except 5g peak). 

Part or Identifying Number (PIN):  The PIN shall be constructed from table I (e.g., F61C500V1A). 

TABLE I.  Part or identifying number. 1/ 

|Style|Characteristic|Voltage|Current|
|---|---|---|---|
|F61<br>F61<br>F61<br>F61<br>F61<br>F61<br>F61<br>F61<br>F61<br>F61<br>F61|C<br>C<br>C<br>C<br>C<br>C<br>C<br>C<br>C<br>C<br>C|500V<br>500V<br>500V<br>500V<br>500V<br>500V<br>500V<br>500V<br>500V<br>500V<br>500V|1A<br>2A<br>3A<br>5A<br>6A<br>8A<br>10A<br>15A<br>20A<br>25A<br>30A|



- 1/ For silver plated terminals, the designator "S" is added after the current rating. 

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MIL-PRF-15160/61J 

## VERIFICATION: 

Qualification inspections:  The number of qualification samples required shall be: 

- a.  24 samples maximum current rating of each voltage and design. 

- b.  24 samples minimum current rating of each voltage and design. 

NOTE:  If labels are used, five additional samples of any rating are required. 

Sample size:  The number of group III samples shall be twelve samples each of the maximum and minimum current ratings.  The samples shall be divided as shown in table II. 

TABLE II.  Short circuit test. 

|Number of<br>samples|Short circuit<br>current|Test<br>voltage|
|---|---|---|
|3<br>3<br>3<br>3|5,000 A<br>200,000 A<br>5,000 A<br>150,000A|500 V ac1/<br>500 V ac1/<br>500 V dc<br>500Vdc|



1/  A 600 volt ac test voltage may be used. 

Group C inspection:  Group C inspection shall be performed on short circuit current ratings of 5,000 A at 500 V ac; 200,000 A at 500 V ac; and 5,000 A at 500 V dc.  The 150,000 A at 500 V dc short circuit current test is not required to be performed for group C testing. 

## INSPECTION ROUTINE: 

AC short circuit test:  AC short circuit tests shall be performed at the currents shown in table II at not less than 500 volts, single phase, and not greater than 20 percent power factor, lagging.  The current shall be applied within plus or minus 10 degrees of the zero point of the voltage wave. 

DC short circuit test:  DC short circuit tests shall be performed at the currents shown in table II at not less than 500 volts.  The rate of rise shall be between 25,000,000 and 30,000,000 amperes per second. 

Cross-reference:  For applicable cross-reference see table III.  The existing stocks of superseded items may be used.  When exhausted, the superseding parts shall be used. 

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MIL-PRF-15160/61J 

TABLE III.  Cross-reference. 

|Superseding<br>number|Superseded numbers for CAGE|Superseded numbers for CAGE|
|---|---|---|
||81349|96906|
|F61C500V1A<br>F61C500V2A<br>F61C500V3A<br>F61C500V5A<br>F61C500V6A<br>F61C500V8A<br>F61C500V10A<br>F61C500V15A<br>F61C500V20A<br>F61C500V25A<br>F61C500V30A|F61H1R00C<br>N/A<br>F61H3R00C<br>N/A<br>F61H6R00C<br>N/A<br>F61H10R0C<br>F61H15R0C<br>F61H20R0C<br>F61H25R0C<br>F61H30R0C|MS15250-1<br>N/A<br>MS15250-3<br>N/A<br>MS15250-6<br>N/A<br>MS15250-10<br>MS15250-15<br>MS15250-20<br>MS15250-25<br>MS15250-30|



Referenced documents.  In addition to MIL-PRF-15160, this document references the following: 

MIL-STD-202-204 MIL-STD-202-207     MIL-STD-202-211 

The margins of this specification 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 document based on the entire content irrespective of the marginal notations and relationship to the last previous issue. 

Custodians: Army - CR Navy - SH Air Force - 85 DLA - CC 

Preparing activity: DLA - CC (Project 5920-2017-055) 

Review activities: Army - AR, AT, CR4, MI Navy - AS, CG, MC, OS, YD Air Force - 19, 99 

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 https://assist.dla.mil. 

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