MIL-DTL-23928/4E
TABLE I. Part or identifying numbers (PIN's).
Number
Symbol number and enclosure type
Panel
Dash
of
type
Dripproof
Totally
Watertight
number
circuits
(DP)
enclosed (TE)
(WT)
01
2
2521
2521.1
2521.2
02
4
2522.2
2522.3
2522.4
03
6
2523.2
2523.3
2523.4
Distribution panel
04
8
2531.2
2531.3
2531.4
05
10
2532.2
2532.3
2532.4
06
12
2533.2
2533.3
2533.4
11
4
2511
2511.1
2511.2
Distribution panel
with (two) NQB-A101
12
6
2511.3
2511.4
2511.5
circuit breakers
13
8
2511.6
2511.7
2511.8
for two-way 100A bus
14
10
2511.9
2511.10
2511.11
transfer
15
12
2511.12
2511.13
2511.14
21
4
2512
2512.1
2512.2
Distribution panel
with (three) NQB-A101
22
6
2512.3
2512.4
2512.5
circuit breakers
23
8
2512.6
2512.7
2512.8
for three-way 100A
24
10
2512.9
2512.10
2512.11
bus transfer
25
12
2512.12
2512.13
2512.14
31
4
2513
2513.1
2513.2
Distribution panel
with (two) NQB-A250
32
6
2513.3
2513.4
2513.5
circuit breakers for
33
8
2513.6
2513.7
2513.8
two-way 250A bus
34
10
2513.9
2513.10
2513.11
transfer
35
12
2513.12
2513.13
2513.14
Example: The full PIN for an 8-circuit distribution panel with (two) watertight, 8-circuit panel is:
M23928/4-13 WT
Military specification
Enclosure type
(see table I)
Specification
sheet number
Dash number
(see table I)
10
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