MIL-DTL-24646B
3.4.3.5 Switch terminal connector. The terminal connector between the branch bus and switch shall be sized and
formed as shown (see 3.1).
3.4.4 Switches. Where required (see 3.1), switches shall be as specified in MIL-DTL-15291. Switch type shall be
as specified (see 3.1).
3.4.4.1 Handles. Switch handles shall be brass, as specified in ASTM B584, or molded polyamide (nylon) and
shall be as shown on figure 1. Handles shall be secured to the shaft extension by the use of corrosion resistant steel
(CRES) setscrews, commercial grade.
3.4.4.2 Shaft extensions and coupling plates. Switch shaft extensions and coupling plates shall be zinc plated
steel, CRES commercial grade, or nickel copper alloy as specified in QQ-N-281. For submersible fuse panels, the
shaft shall be CRES or nickel-copper alloy per QQ-N-281. Cups shall be brass and coupling plates shall be brass or
CRES. Molded polyamide (nylon) may be used for shaft extensions, cups and coupling plates at the option of the
contractor. The shaft extension shall, regardless of manufacturer, mate with and be compatible with the switch
handle shown on figure 1. The coupling plates may be as shown on figure 1 or may be contractor's choice, providing
they meet the requirements specified herein. Pins shall be of austenitic CRES commercial grade, or nickel-copper
alloy as specified in QQ-N-281.
3.4.5 Commercial (hardware) parts. Commercial utility hardware items such as screws, bolts, and nuts may be
used, provided they possess properties equivalent to and are replaceable by MS or AN part numbers.
3.4.6 Mounting parts. Unless otherwise specified (see 3.1), mounting parts, such as brackets, straps, angles, and
pads shall be of the same material as the enclosure.
3.5. Design and construction. Fuse boxes shall be of the design, construction, and physical dimensions as
specified (see 3.1). Fuses and wiring shall not be furnished.
3.5.1 Enclosures. Enclosures shall be of the material specified and shall be submersible (15-foot), watertight, or
totally enclosed as specified (see 3.1).
3.5.1.1 Wiring diagram. The wiring diagram (see 3.1), shall be as specified in MIL-E-2036 except the plastic
protective material shall be a clear plastic laminating film, 10-mils minimum thickness, of polycarbonate, polyester
(PET), polypropylene, or other suitable commercial grade plastic, which is tough, rigid and chemically resistant.
3.5.1.2 Cable entrance. Unless otherwise specified (see 6.2), holes for stuffing tubes or cable connectors shall
not be provided.
3.5.1.3 Stuffing tubes. Unless otherwise specified (see 6.2), stuffing tubes shall not be furnished.
3.5.1.4 Mounting. The location of mounting holes shall be as specified (see 3.1). The enclosure shall support the
total assembly of the box, fuses, switches, where required, and associated hardware by the mounting means
specified. Mounting bolts shall not be furnished.
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