10-503140-032 Datasheet, PDF (81/437 Pages) Amphenol Corporation – The Interconnection Leader

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Series I, LJT Breakaway Fail Safe
Quick-Disconnect with Axial Pull of Lanyard
Amphenol LJT Breakaway Fail Safe Connectors provide
unequaled performance in environments requiring
instant disengagement.
Designed to provide quick disconnect of a connector plug and
receptacle with an axial pull on the lanyard, the “Breakaway”
Fail Safe connector family offers a wide range of electrical and
mechanical features:
• Instant decoupling and damage free separation
• Completely intermateable with standard LJT receptacles
• Inventory support commonality through the use of standard
insert arrangements and contacts
Breakaway un-mating is initiated by applying a pull force to the lan-
yard which causes the operating sleeve on the plug to move away
from the receptacle. Coupling segments on the plug then move
away from the mating receptacle while expanding, thus releasing the
receptacle. After completion of the un-mating sequence, spring com-
pression returns the sleeve and segments to their original positions.
Un-mating of the plug may also be accomplished by normal rotation
of the coupling ring without affecting the breakaway capability.
The LJT Breakaway Fail Safe connector features which
provide EMI EMP shielding in excess of MIL-DTL-38999
Series I requirements:
• Solid metal-to-metal coupling
• EMI grounding fingers
• Conductive finishes
Contact Amphenol Aerospace for more information on breakaway,
quick-disconnect connectors. Other Amphenol cylindrical families
(MIL-DTL-38999 Series III, MIL-DTL-26482, MIL-DTL-83723) also
offer breakaway quick-disconnect connectors.
LJT Breakaway Fail Safe
In addition to standard Breakaway connectors,
Amphenol also manufactures custom breakaway
connectors including those with:
• Increased pull-force capability
• Custom lanyard lengths and backshells
• Low force separation capabilities
• Low insertion/separation force contacts
• Non-cadmium finishes
• Custom JT Series Breakaway designs have
been developed for special applications;
however the LJT Series is
recommended over the JT Series for the
quick-disconnect breakaway style.
PART #
Commercial
Connector Shell
Type
Style
88/91 5388
Part number reference. To complete,
see how to order pages 79.
Service Shell Size Contact Alternate Special
Class & Insert Arrg Type Position Variations
T
22-2
P
A (XXX)
Military
MS
Service Shell
Number Class Size
MS27661 T
14
Finish
A
Insert Contact Style
Arrg
(P or S)
18
P
Alternate
Position
A
LJT Fail Safe 88-5388/91-5388
.275 MAX.
OUTER SLEEVE
MOVEMENT
DURING MATING
+.007
.575 _–.003
SOCKET INSERT
V
.594
+.003
–.002
+.012
.019 _–.003
PIN INSERT
(MS27661)
D
B
Lanyard Release Plug
* To complete order number see page 79.
LANYARD
PULLED TAUT
V Thread
AGAINST A
.500 ±.031
L
A
Shell A Dia.
D Max.
Accessory
UNEF
Class 2A
DIA. MANDREL
MS LANYARD LENGTH
6.250 STD.
Size Max. B Max.
Dia.
L Max. (Plated)
FOR PROPRIETARY LANYARD LENGTH
SEE LANYARD LENGTH TABLE
11 1.393 1.797
.740
1.703 .5625-24
13 1.558 1.969
.926
1.703 .6875-24
15 1.669 2.078
1.051
1.703 .8125-20
17 1.797 2.203
1.176
1.703 .9375-20
19 1.926 2.323
1.300
1.703 1.0625-18
21 2.054 2.469
1.426
1.703 1.1875-18
23 2.183 2.594
1.551
1.703 1.3125-18
25 2.293 2.703
1.676
1.766 1.4375-18
All dimensions for reference only.
80 Contact Amphenol Aerospace for more information at 800-678-0141 • www.amphenol-aerospace.com