MIL-DTL-15291/12C
REQUIREMENTS:
Applicable specification: MIL-DTL-15291
Dimensions and mounting: See figure 1
Switching characteristics: See table I
Angle of throw: 90 degrees
Switching action: Snap action, reciprocating
Electrical and endurance ratings: See table II
Stop strength (applicable to switches with stops): 100 inch-pounds
Vibration: 50 Hz, MIL-STD-167-1
Shock (high impact): High impact, MIL-S-901
Contact resistance: 1.5 milliohms maximum
Dielectric withstanding voltage: 2,000 Vrms
Insulation resistance: 200 megohms minimum
Mounting bolts: (4) ½ diameter, length, and headstyle to suit application. Bolts not furnished.
TABLE II Electrical and endurance ratings.
De-energized
Electrical
Test rate
operations
Current
Voltage
Operations
Tests
(operations
(number of
(number of
(amperes)
(volts)
per minute)
operations)
operations)
Alternating current
200
500
6,000
8
4,000
(rms)
Direct current
200
250
4,000
3
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Terminal marking: Terminal markings shown in table I locate terminals as viewed from the front of the
switch (handle end) Markings shall be stamped in rear surfaces of terminals.
GENERAL INFORMATION:
Switches not covered by Specification sheets: Switches which are fabricated from standard parts, as
used in qualified switches, but which do not comply with switches detailed herein with respect to circuit
characteristics, switching action, mounting arrangement, and handle details may be acquired under this
specification from contractors having qualification approval under this specification.
Extended ratings: Switches detailed herein have been tested and found satisfactory at the extended
ratings listed in table III. Reduced life expectancy must be anticipated for switches used at these
increased voltage or current levels. Tests under the conditions of table III are not required for
qualification acceptance and they are not repeated routinely as for maintenance of qualification.
Supplemental evaluations and tests applicable to particular circuit requirements are recommended.
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