4x100 A
Circular power connector
MAIN CHARACTERISTICS
LJT 25-1A
•
4 size 4 crimp contacts
(male contact diameter: 7.4 mm)
DESCRIPTION
APPLICATIONS
•
4 size 16 crimp contacts
(male contact diameter: 1.6 mm)
•
Working temperature:
- 54°C/+ 64°C whith a constant current of 100 A per power contact
This power connector from
Amphenol LJT 25-1A was
originally developped for military
applications. Indeed, it is used in
the conditioning of tanks.
This connector has the particularity
to provide 4 size 4 power contacts
and 4 size 16 contacts in a size
25 shell in accordance with the
MIL-C-38999 Series 1 standard.
•
Temperature range:
- 65°C/+ 175°C
•
Insulation resistance at ambient under 500 Vdc > 5000 Mohms
•
Lightweight space saving design
•
Quick positive coupling:
3 point bayonet lock system
•
100% scoop-proof for total contact protection.
•
Keying:
achieved by different key / keyway locations
•
Corrosion resistance:
olive drab cadmium-plate aluminium
High performance
for power supply
•
This connector is ideally suited
to harsh environment / military /
aeronautic uses for power bus /
loop and conditioned power
supplies.
•
Durability:
500 cycles
•
Contact rating:
• Current capability
- 100 A (size 4 contacts)
- 13 A (size 16 contacts)
•
Service rating M:
• Operating voltage at sea level
: 400 Vrms
• Test voltage unmated at sea level : 1300 Vrms
- at 15000m / 50000 ft
: 550 Vrms
- at 21000m / 70000 ft
: 350 Vrms
- at 34000 m / 110000 ft
: 200 Vrms
• Test voltage mated, please consult us.
•
Mating force:
F < 4.6mN
•
Disconnection force :
•
Random vibrations at 0.4g2/Hz (50 to 2000 Hz in two directions):
no electrical discontinuities > 1µs
E116/A
4x100 A
0,6mN < F < 4.6mN
CHARACTERISTICS
Application tools & process
(coupled with backshell HE 308-35-25-30-36)
For this power connector, we recommend the use of our backshell HE 308-35 for optimum performance.
Tool references
Installation instruction
•
For size 16 contacts:
•
Crimping pliers
• Turret positioner
(Position number 5)
• Removal tool
•
Cable preparation
809857
809858
809944
809947
809948
809943
809949
809950
809951
809952
•
We recommend the use of the band backshell with a
minimum chamber diameter of 30mm suitable for the
size of conductors.
•
First place the heat-shrink sleeve over the cable
followed by the backshell HE308-35.
•
For size 4 contacts
•
Crimping pliers
& a pair of jaws (One of the jaws is
equipped with a positioning stop )
• Removal tool (4 are needed)
•
Stripping process
•
Cut the jacket from the cable taking care not to
damage the braid.
•
Comb the braid back and stick it to the outer jacket
with adhesive.
•
Trim the size 4 conductors to 65mm ensuring there is
no difference in the lengths of these conductors
greater than 1mm. (This is to avoid damage to clips in
the insulator) (See figure 1).
•
For the rear accessories:
2 possibilities
ITS System
•
Pliers
•
Tool
•
Tool
BAND-IT System
•
Tool
•
Crimping process
•
Crimping of size 16 contacts (Locator positioned number 5)
- The strip length of the size 16 conductors should be 6mm.
- Crimp the contact of each size16 wire with the corresponding tool.
- After having crimped the size 16 contacts fold them back and position them with adhesive (see figure 2).
•
Crimping of size 4 contacts
- The strip length of the size 4 conductors should be 13 mm.
- Choose male or female positioning stop on your corresponding crimping tool.
- Crimp the contacts.
•
Contact insertion
• Check the position of each contact before inserting it in the cavity.
• Insert firstly the 4 size 4 contacts in the insulator and push them until locked, and secondly do the same for
size 16 contacts.
•
Removal process
• Take off the heat shrink sleeve and remove the band, fold back the braid and screw off the backshell.
• Remove the size 16 contacts one by one using the tool 809944.
• Fold back size 16 wires and secure them with adhesive.
• Then remove secondly the 4 size 4 contacts at the same time, using 4 removal tools (see figure 3).
Figure 1
80
±0,5
15
±0,5
Figure 2
adhesive
≈
1 mm
braid
adhesive
size 4 conductor
size 16 conductor
size 4 conductor
Figure 3
4 removal tools
in
0 m
ght
3
i
a
str
•
07 receptacle
A = 40.18 mm
E = 55.58 mm
B = 1.7500 - 18 UNEF inches
F = 59.13 mm
C = 51.20 mm
G = 1.4375 - 18 2A UNEF
•
Plug
G = 1.4375 - 18 2A UNEF
C = 47.63mm
a = 31 mm Max
•
Receptacle and plug mated
•
Position of major keyway
A = 80°
B = 69°
C = 121°
Receptacle: front face shown
D = 110°
J = 44.68 +0.25 / -0
H= 43.41 +0 / -0.25
K= 59.7 mm min
4x100 A
•
Panel drilling detail for jam nut receptacle
DIMENSIONAL CHARACTERISTICS
HOW TO ORDER
HE308 military P/N
HE308 series
Plug
07 for jam nut receptacle
00 for square flange
06 for plug
Receptacle
HE 308
06
07
T
25 44
P
S
B
7
M
Service
Shell size
Contact arrangement
Contacts:
P for pin (for receptacle only)
S for socket (for plug only)
Coding:
B: position of major keyway
N for standard or A, B, C, D
Shell finish:
7: olive-drab cadmium plated
In accordance with DAT specification
Proprietary P/N
LJT series
Receptacle
Plug
LJT
07
06
RT 25 1A
P
S
B 014
07 for jam nut receptacle
00 for square flange
01 for cable connecting receptacle
06 for plug
Service
Shell size
Contact arrangement
Contacts:
P for pin (for receptacle only)
S for socket (for plug only)
Coding:
B: position of major keyway
Nothing for standard or A, B, C, D
Shell finish:
014: olive-drab cadmium plated
MÉDIASQUARE (33) 01 46 31 36 36
Backshells
The connector is compatible with all backshells available in our LJT range :
LJT SAD
LJT SAC
HE 308-35
LJT NSB
LJT NSA/HE30813
LJT NSD/HE30814
Do not hesitate to contact us for further information
Immeuble le Doublon - 11, avenue Dubonnet
92407 Courbevoie Cedex
Tel. : (33)
1 49 05 30 00
- Fax : (33)
1 49 05 30 44
Technical support
Tel. : (33)
4 50 89 28 00
The information given in this document are 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.
E116/A
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