MIL-DTL-3786/36B
REQUIREMENTS:
Dimensions and configuration: See figures 1 and 2.
Maximum number of poles per deck:
15° ------------- 8 poles
18° ------------- 5 poles
22° 30' --------- 4 poles
TABLE II. Values for angle A.
Angle of
Angle
throw
A
15°
7° 30'
18°
18°
22° 30'
11° 15'
Construction: F.
Insulation material: Symbol P.
Temperature life characteristic: C.
Vibration grade: Symbol 2 (10 to 500 Hz).
Shock type: B (Medium and high impact, method I and method II).
Altitude: Symbol C (70,000 ft.)
Mounting hardware: Switch shall be supplied with two mounting nuts in accordance with MS25082-20,
one lockwasher in accordance with NASM35333-42 and one nor-turn washer in accordance with figure
3. Alternative base metals and protective finishes, as approved by the qualifying activity, may be
utilized for mounting nut, lock washer, and not-turn washer material. Dimensions shall be in
accordance with the referenced hardware specifications.
Terminal strength (pull): A force of 2 pounds shall be applied to the terminals. Terminal bend test is
applicable.
Moisture resistance: Insulation resistance, measured immediately after conclusion of the moisture
resistance test and while the switches are still in the humidity chamber, shall be not less than .5
megohm. At the end of the drying period, the insulation resistance shall be not less than 10 megohms.
Stop strength: Stops shall be set in a clockwise direction from position number one, when viewed from
shaft end. Stops, when supplied, shall withstand a 15 pound-inch torque.
Rotational torque: The minimum and maximum values of torque determined for shaft rotation shall be
within the limits specified in table III.
TABLE III. Rotational-torque limits.
Temperature
Torque (lb.-in.)
Total number of
switch poles
Minimum
Maximum
Less than 6
Room
.5
2.5
Minimum
.5
3.0
6 or more
Room
1.2
4.5
Minimum
1.2
5.0
8
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business