MIL-PRF-15160/20F
TABLE I Electrical requirements.
Characteristics
BR
Voltage rating
250 V ac
250 V dc
Overload test 1/
135%
0 2 hour
500%
10 25 seconds
Short circuit test
at 250 V dc
10,000A
at 250 V ac
200,000A
(20% PF max.) 2/
1/ Overload is shown as a percentage of
the current rating of the fuse.
2/ Power factor (PF).
TABLE II. Allowable temperature rise in degrees Celsius (°C).
Casing of body
Terminals
Thermometer
Thermocouple
Thermometer
Thermocouple
50 °C
90 °C
60 °C
90 °C
Part or Identifying Number (PIN): The PIN shall be constructed from table III (e.g., F20BR250V110A).
TABLE III Part or Identifying Number. 1/ 2/
Style
Characteristic
Maximum
Current rating
voltage
F20
BR
3/
250 V
110A
F20
BR
3/
250 V
125A
F20
BR
3/
250 V
150A
F20
BR
3/
250 V
175A
F20
BR
3/
250 V
200A
1/ For silver plated terminals, the designator "S" is added after the
current rating.
2/ The characteristic A fuse has been discontinued without replacement.
3/ The characteristic B fuse has been discontinued. The characteristic
BR fuse may be used to replace the old characteristic B fuse of the
same current rating.
3
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