olive drab cadmium-plate aluminium or electroless nickel
DESCRIPTION
APPLICATIONS
•
100% scoop-proof for complete contact protection
•
Keying:
achieved by different key / keyway locations
The Amphenol Socapex power
connector LJT 21-48 provides
4 size 8 power contacts in a LJT 21
shell in accordance with the
MIL-DTL-38999 Series I standard.
This arrangement was originally
developped for military applications.
Due to the rigidity of the cables
used, the front male insulator has
been reinforced to maintain a perfect
alignment of contacts during mating.
A header is placed in the backshell
to guide each wire and to guarantee
tightness even when cables
are bent. Available in Mil-DTL-38999
series III standard.
Available in TV-CTV (Mil-DTL-38999
Series III) version.
New hard piggy back grommet for
easy installation.
•
Quick positive coupling:
3 point bayonet locking system
•
Durability:
500 cycles
•
Insulation resistance at ambient under 500 Vdc > 5000 Mohms
•
4 size 8 contacts
•
Range temperature:
- 65°C to + 175°C
•
Contact rating:
Current capability 60 A
•
Service rating M:
• Operating voltage at sea level: 400 Vrms
• Test voltage unmated
- at sea level
: 1300 Vrms
- at 15000 m / 50000 ft : 550 Vrms
- at 21000 m / 70000 ft : 350 Vrms
- at 34000 m / 110000 ft : 200 Vrms
• Test voltage mated, please consult us.
High performance
for power supply
LJT 21-48
•
Power supplies
•
Shelters
•
Firing posts
Hard piggy back grommet for
size 8 cavity and power cable:
ref.: 900471.
Contact
Size
Contact
diameter
mm
3.6
Crimp barrel
Diameter
mm
4.6
Depth
mm
10
Gauge
AWG
8
Cable sizes
Section
mm
8.98 to 10
Outside
diameter
mm
4.5/5.8
8
E117/C
DIMENSIONAL CHARACTERISTICS
Dimensional characteristics
•
Square flange receptacle
A = 33.83 mm
B = 15.29 mm
C = 31.75 mm
E = 39.67 mm
F = 3.25 mm
G = 1.1875 - 18 2 A UNEF
•
Jam nut receptacle
A=
B=
C=
E=
F=
G=
a=
33.83 mm
1.5000 - 18 UNEF inches
43.00 mm
49.23 mm
52.65 mm
1.1875 - 18 2 A UNEF
8.33 mm Max
without protrusion of the
piggy back grommet.
•
Plug
G = 1.1875 - 18 2 A UNEF
C = 41.28 mm
a = 31 mm Max
without protrusion of the
piggy back grommet.
•
Position of major key way
A = 80° B = 69° C = 121° D = 110°
Receptacle: front face shown
•
Panel drilling for square flange and jam nut receptacle
Square flange receptacle
front panel mounting
R
4ØW
F
G
V
Jam nut receptacle
back panel mounting
ØE
ØD
Shell
Size
21
R
(mm)
31.75
V
+0
-0.25
(mm)
42.5
W
+0
-0.25
(mm)
3.25
G
Mini
(mm)
50.60
E
Mini
(mm)
38.28
F
+0
-0.25
(mm)
37.06
D
+0
-0.25
Mini
(mm)
32.16
Panel thickness for jam nut receptacle : 1.6 mm mini
3.2 mm maxi
Insert arrangement 21-48 particularities
•
Side half-view of female plug/receptacle
•
Side half-view of male plug/receptacle
•
Insert arrangement: front face shown
Male plug
Female receptacle
LJT 21-48
INSERT ARRANGEMENT 21-48 PARTICULARITIES
HOW TO ORDER
Connectors
Proprietary P/N
Series
Shell type:
00: square flange receptacle
01: in-line receptacle
07: jam nut receptacle
06: plug
LJT 00
RT
21
48
P
A
014
Connector class:
RT: for environmental applications (supplied without
rear accessories).
Design provides serrations on rear threads of shells.
21: shell size
48: insert arrangement
(4 size 8 contacts)
Contact type:
P: pin
S: socket
The information given in this document is as a guideline only. We reserve the right to modify our products in any way we deem necessary. Any duplication is prohibited, unless approved in writing.
E117/C
Polarization, rotation of major keyway:
None = normal
A, B, C, D.
Shell finish :
014: olive drab cadmium
023: electroless nickel
(Connector supplied with 4 contacts and 4 piggy back grommets 900471)
For additional information, please see our LJT catalog.
Contacts
Male contact:
Reducing sleeve for AWG10:
900198
900154
Female contact:
Piggy Back grommet:
900217
900471
Numerous piggy back grommets are available depending to cable diameters. Please consult us.
Backshells
This connector is compatible with all backshells available for LJT connectors (MIL-DTL-38999 Series I / HE 308):
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