MIL-DTL-3786/13G
Extent of qualification: "F" construction style qualifies "E" construction style for the same switches
provided two sample units of "E" construction switches are tested to explosion proof requirement
paragraph to verify explosion proof capability.
TABLE II. Circuit values for life (rotational) test.
Inductive loads
Resistive loads
Environmental
(250 henries)
condition
Milliamperes
Volts, dc
Milliamperes
Volts, dc
At atmospheric pressure
125
28 dc
and 85°C or 125°C
115 V rms
50
28
75
60 Hz
(25,000 cycles)
At reduced barometric pressure
50
28 dc
(approximately. 25°C)
115 V rms
10
28
20
60 Hz
(25,000 cycles)
At atmospheric pressure
500
28 dc
and room temperature
115 V rms
250
28
(Approx. 25°C)
500
60 Hz
(10,000 cycles) 1/, 2.
1/ Three additional samples will be run for qualification. Switch to be tested shall be part number
M3786/13-0321, -3321; or -5321.
2/ The contact resistance (applicable to ac and dc), after life tests shall exceed 50 milliohms.
Dielectric withstanding voltage: The applicable test voltage specified in table III shall be applied.
TABLE III. Dielectric-test voltages.
Altitude
Test voltage
(Volts, rms) (60 Hz)
At atmospheric pressure
500
At reduced barometric pressure
350
Ordering data: Acquisition document should specify the following:
(1) Title, number, and date of this specification sheet, and the military part number as listed in
table IV.
(2) For switches not listed in table IV acquisition shall be in accordance with the ordering data of
MIL-DTL-3786 (for switches covered by specification sheets).
Part number: See table IV.
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