MS27787D
REQUIREMENTS
The Sealing grommet shall seal on a smooth wire insulation of .040 (1.02 mm) to .083 (2.11mm)
diameters
The terminal end of switch shall be color coded red to indicate contact size
Direction of internal mechanism movement is opposite to the direction of the toggle movement
Sealing plugs may be used in nonfunctional grommet holes. Maximum weight is .108 pound.
Locking arrangement Positive locking shall be accomplished and shall prevent motion of the toggle lever until the locking mechanism is manually released.
The force required to release the locking mechanism shall be 3 to 5 pounds.
The locking means at the top of the toggle busing shall be capable of withstanding a torque of 20 inch- pounds applied in both directions immediately following the humidity test.
Electrical rating: See table I.
TABLE I: Detail Requirements
MS Part Number |
Available Locking Combinations |
Circuit with toggle lever in |
Current capacity (amperes) 28 volts dc |
Current capacity (amperes) 115 volts, 60 and 400 hertz ac |
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Keying side |
Center |
Opposite keying side |
Lamp -load circuit |
Resistive circuit |
Inductive circuit |
Lamp- load circuit |
Resistive circuit |
Inductive circuit |
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MS27787-21 |
ALL |
1-2 ON |
OFF |
2-3 ON |
5 |
7.5 |
7.5 |
3 |
7.5 |
7.5 |
MS27787-22 |
D,F,G |
OFF |
NONE |
2-3 ON |
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MS27787-23 |
D,F,G |
1-2 ON |
NONE |
2-3 ON |
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MS27787-24 |
E,F,K,M |
NONE |
OFF |
2-3 ON |
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MS27787-25 |
F |
NONE |
MOM. OFF |
2-3 ON |
4 |
7.5 |
7.5 |
2 |
7.5 |
7.5 |
MS27787-26 |
F |
1-2 MOM. ON |
NONE |
2-3 ON |
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MS27787-27 |
E,L,N |
1-2 MOM. ON |
OFF |
2-3 MOM ON |
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MS27787-28 |
E |
1-2 MOM. ON |
OFF |
NONE |
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MS27787-29 |
F |
MOM. OFF |
NONE |
2-3 ON |
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MS27787-30 |
F |
1-2 MOM. ON |
NONE |
OFF |
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MS27787-31 |
E,F,K,L,M,N |
1-2 MOM. ON |
OFF |
2-3 ON |
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MS27787-32 |
E |
NONE |
ON 1-2 |
2-3 MOM. ON |
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MS27787-33 |
E,F,K,M |
NONE |
ON 1-2 |
2-3 ON |
5 |
7.5 |
7.5 |
3 |
7.5 |
7.5 |
Test Requirements
Test shall be performed in accordance with MIL-DTL-3950 except
a) During all tests. Switches shall be fully wired with appropriate wire and terminal contacts.
b) Contact voltage drop- the contact drop with two terminals and the switch contact in series shall not exceed 8 millivolts measured from one wire contact through the contacts to the other wire contacts.
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