MIL-DTL-3950J
3.6.8 Dielectric withstanding voltage. When switches are tested as specified in 4.8.9, the switches
shall withstand the application of the specified voltages without arcing, flashover, breakdown of insulation,
or damage; there shall be no momentary flashover or leakage current in excess of five hundred
microamperes.
3.6.9 Mechanical endurance. When switches are tested as specified in 4.8.10, there shall be no
deterioration of the toggle seal, mechanical breakage, or malfunction. Circuitry and degree of toggle level
movement shall be as specified (see 3.1).
3.6.10 Electrical overload, electrical endurance, intermediate current, low-level life, and temperature
rise. When switches are tested as specified in 4.8.11, each pair of switch contacts under test shall open
and close the circuit in proper sequence during each cycle of the switch-actuating member. There shall
be no malfunction or damage during or after the test. Any blown fuse or tripped circuit breaker (see
4.8.11), shall constitute failure. When switches are tested as specified in 4.8.11.7, the temperature rise of
the switch terminals shall not exceed 50°C. At the conclusion of the test, switches shall be electrically
and mechanically operable while controlling the test load, at the test environmental and at room
conditions. Electrical tolerances are as follows:
±5 percent for 28V, 125 VDC, and 250 VDC
Voltage
±7 percent for 125 VAC and 250 VAC
±5 percent
Frequency:
±5 percent
Current:
3.6.11 Short circuit. When tested as specified in 4.8.12, switch contacts under test shall open after
each closure. There shall be no mechanical failure or damage.
3.6.12 Vibration. When switches are tested as specified in 4.8.13, there shall be no separation of
closed contacts or closure of open contacts in excess of 10 microseconds. There shall be no damage.
3.6.13 Shock. When switches are tested as specified in 4.8.14, there shall be no separation of closed
contacts or closure of open contacts in excess of 10 microseconds. There shall be no damage.
3.6.14 Salt spray (corrosion). When switches are tested as specified in 4.8.15, there shall be no
warping, cracking, excessive corrosion, or other damage, and the specified cycling shall be completed
without failure. The mounting hardware shall be readily removable at the conclusion of the test.
3.6.15 Thermal shock. When switches are tested as specified in 4.8.16, there shall be no mechanical
or electrical damage, or loosening of rivets or other fastening devices.
3.6.16 Moisture resistance. When switches are tested as specified in 4.8.17, there shall be no
electrical failures, or breaking, spalling, cracking, or loosening of terminals.
3.6.17 Sand and dust. When switches are tested as specified in 4.8.18, switches shall be electrically
and mechanically operable at the conclusion of the test, as evidenced by ability to control a pilot-lamp
circuit.
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