PT Breakaway
twist pull plug
The PT miniature breakaway connector has the follow-
ing design features:
• solder contacts, potted termination
• instant decoupling of plug and receptacle with an
axial pull on the lanyard when they are fully mated
• intermateable with standard receptacles
• operating voltage to 900 VAC (RMS) at sea level
• same quick positive bayonet coupling and 5 key/
keyway polarization as other PT styles
4.500
±.250
L
.016
+.010
–.025
SOCKET
INSERT
J
.328 +.010
–.025
PIN INSERT
H
B
LANYARD PULLED TAUT
AGAINST A .200 ±.031 DIA MANDREL
A
Part
Number*
Shell
Size
A Dia.
Max.
B
Max.
H
±.016
J
±.010
L
Max.
Breakaway Plug
with PT Solder Contacts,
Potted Termination
71-3048XX-( )
72-3048XX-( )
71-304808
71-304810
71-304812
71-304814
71-304816
71-304818
71-304820
71-304822
71-304824
8
10
12
14
16
18
20
22
24
.875
1.125
1.281
1.438
1.562
1.718
1.875
2.031
2.156
.984
1.125
1.406
1.562
1.688
1.844
2.000
2.188
2.312
.327
.444
.558
.683
.808
.909
1.034
1.159
1.284
.353
.353
.353
.353
.353
.353
.415
.415
.415
1.937
1.890
1.906
1.953
2.000
2.031
2.234
2.328
2.359
All dimensions for reference only.
* See Finish information below to determine prefix 71 or 72 in part number.
Drawing above shows standard lanyard length.
Order by Amphenol Propriety number as follows (example part number shown):
71 -
3048 18 -
32
P
1
2
3
4
1. Finish
“71”designates corrosion resistant olive drab cadmium plate
“72” designates anodic coated (electrically nonconductive-anodic) finish providing extreme wear and
corrosion resistance, 500 hour extended salt spray.
2. Connector Type Identification
3048 designates PT plug, solder, potted termination style
3. Shell Size and Insert Arrangement Number
See insert arrangement availability for Miniature Breakaway connectors on page 6. The numbers in the insert
arrangement are hyphenated. The number preceding the hyphen is the shell size. The number following the hyphen is
the insert arrangement number.
4. Contact Type/Alternate Insert Rotation
P designates pin, S designates socket for normal
positioning of inserts. When an alternate position
of the insert is required to prevent cross-mating
a different letter (other than P or S) is used. See
page 7 for description of alternate positions; then
convert to Amphenol proprietary coding by the
chart at right to complete the part number.
Pin Contacts
Amphenol Equates to
Letter
MS letter
G
PW
I
PX
K
PY
M
PZ
Socket Contacts
Amphenol Equates to
Letter
MS letter
H
SW
J
SX
L
SY
N
SZ
26
Analog electronics
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