MS21354M
REQUIREMENTS:
For hardware detail specifications, see appendix of MIL-DTL-8834.
In the event of a conflict between the text of this specification and the references cited herein, the text of this specification shall take precedence.
Dielectric withstanding voltage: For center on circuits, DWV shall be 1,200 V rms at sea level.
115 V ac, 60 hertz electrical endurance tests are to performed at room temperature and pressure.
Switches shall be rigidly mounted by their normal means on a rigid metal panel and subjected to shock test, method 207 of MIL-STD-202. The switch shall be electrically and mechanically operative at the conclusion of the test and there shall be no mechanical transfer during the test.
Terminals: Gold plated.
Suitable for mounting on panels .062 inches (1.57 mm) maximum thickness. Weight: .011 pound maximum (5 grams).
Strength of terminals: 5 pounds normal to the mounting plane and 1 pound in other planes. Altitude: 50,000 feet.
Strength of actuator: Lever pivot and lever stop 6 pounds.
TABLE I. Detail requirements.
MS dash no |
Circuit made between terminals as indicated with the toggle lever in these positions: 1/ |
Current capacity in amperes |
Low current level switching 5 mV |
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Resistive load |
Inductive load |
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28 volts dc |
115 volts |
28 volts dc |
115 volts |
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0pposite locking tab side 4/ |
Center position |
Locking tab side 4/ |
60 Hertz ac |
400 Hertz ac |
60 Hertz ac |
400 Hertz ac |
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-211 |
on 2-3 |
off |
on 1-2 |
5 |
2 |
3 |
1 2/ |
1 |
2 |
25 µA 3/ |
-221 |
none |
off |
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-231 |
on 1-2 |
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-241 |
off |
none |
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-271 |
mom-on 2-3 |
mom-on 1-2 |
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-281 |
none |
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-311 |
on 2-3 |
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-321 5/ |
none |
on 2-3 |
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1/ Direction of movement of internal mechanism is opposite to the direction of the toggle movement.
2/ With time constant of .020 ±.002 second.
31 Contact resistance not to exceed 50 during life, low current level switching.
4/ Non-functional terminals shall not be supplied.
5/ Delayed action of the switch toggle lever may cause circuit to close or open before snap action mechanism trips.
3
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