HARSH ENVIRONMENT
RATCHET COUPLING
M SERIES CONNECTOR
Rapid ratchet coupling mechanism
The M Series connector offers
a new innovative design for motorsport
applications and military systems.
Made of high-strength aluminium, this
connector is one of the lightest and most
compact connector of the LEMO range.
A ratchet screw system enables quick
and secure coupling of the connectors.
The arctic grip makes it easy to manipulate
the connector while wearing winter gloves
or when the connector is located in a
difficult to access area.
Features
• Ratchet-coupling mechanism
• Quick mating: 1/2 turn to seat
• Compact design for space savings
• Oil and fuel resistant
• High vibration and shock resistance
(gunfire test)
• 360° screening for full EMC shielding
• Sealed to IP68 when mated
• Colour coding / keying
• Requires 2x the coupling force to unmate
• Scoop proof
• Reverse sex configuration possible
Technical Characteristics
Characteristics
Endurance
Operating temperature
Resistance to vibration
Shock resistance
Salt spray corrosion test
Protection index (at 2m, 30’)
1)
Gunfire
Value
3000 cycles
-50°C/+200°C
10-2000Hz, 15g
100g, 6ms
144h
IP68
satisfied
Standard
IEC 60512-5 test 9a
–
IEC 60512-4 test 6d
IEC 60512-6 test 6c
IEC 60512-6 test 11f
IEC 60529
MIL STD-810-E
Material and treatment
Characteristics
Outershell, coupling nut
Earthing crown
Ratchet
Insulator
Contacts
Gaskets
Sealing resin
Value
Aluminium (AA 6262A)
Bronze (UNS C 54400)
PEEK graphite
PEEK
Brass/Bronze
FPM + FVMQ
Epoxy
Surface treatment
Ni (5 µm)
2)
Au (1.5 µm)
–
–
Ni (3 µm) + Au (1 µm)
–
–
Note:
1)
at 1.8m/15h.
2)
Anthracite colour.
Models
FM•
Straight plug, key (N) or keys (P and U)
with knurled grip
L
X
P
Reference
Model
øC
Dimensions (mm)
A
B
C
D
L
P
X
6.7
6.7
7.1
Series
0M
1M
2M
Weight
max
(g)
3.6
5.8
8.0
øD
øB
øA
FM
•
FM
•
FM
•
13.1 8.8 12.7 8.0 24.1 4.0
14.6 10.5 14.2 9.7 24.1 4.0
17.6 14.0 17.2 13.0 24.5 4.0
Part number example:
FMN.1M.305.XLC
FG•
L
M
P
Straight plug, key (N) or keys (P and U)
with arctic grip and optional mold stop
Dimensions (mm)
A
B
C
D
F
I
L
M
P
X
6.7
6.7
7.1
Weight
max (g)
4.4
5.8
7.4
2.7
3.3
4.5
X
6.7
6.7
7.1
Reference
øC
øD
øB
øF
øA
Model
FG
•
FG
•
FG
•
Series
0M
1M
2M
X
I
14.4 8.8 12.7 8.0 10.7 1.5 27.1 9.7 4.0
15.9 10.5 14.2 9.7 12.4 1.5 27.1 9.7 4.0
18.9 14.0 17.2 13.0 15.5 1.5 27.5 10.1 4.0
Part number example:
FGN.1M.305.XLCT
EG•
L
S1
P
Fixed socket, nut fixing, key (N)
or keys (P and U)
Dimensions (mm)
C
D
e
E
L
P
S1
S2
Weight
max
(g)
Reference
øC
Model
EG
•
EG
•
EG
•
Series
0M
1M
2M
e
D
S2
E maxi
12.7 6.8 M9x0.6
14.2 6.8 M11x1.0
17.2 6.8 M14x1.0
5.0 18.1 5.3 8.2 11.0
4.5 18.1 5.3 9.5 13.0
4.5 18.1 5.3 12.5 17.0
Part number example:
EGN.1M.305.XLM
F
X
M
P
PB•
Fixed socket with antivibration flange,
key (N) or keys (P and U), 2 holes fixing
Dimensions (mm)
A
B
C
D
F
G
H
J
M
2.0
2.0
2.0
P
5.3
5.3
5.3
Reference
øD
øB
øC
H
A
Model
PB
•
PB
•
PB
•
Series
0M
1M
2M
27.0 8.8 14.5 8.0 15.3 8.3 21.4 3.3
29.0 10.5 16.5 9.7 15.3 8.3 23.4 3.3
32.0 14.0 19.5 13.0 15.7 8.3 26.4 3.3
J
G
Part number example:
PBN.1M.305.XLM
PE•
L
M
S1
5.3
Fixed socket, nut fixing, key (N) or keys
(P and U) and mold stop
(back panel mounting)
Dimensions (mm)
A
B
C
D
e
F
L
M
S1 S2 X
Reference
øC
øD
øB
øF
øA
e
Model
PE
•
PE
•
PE
•
Series
0M
1M
2M
X
I
5 maxi
13.8
S2
17 8.8 16.8 8.0 M13x0.75 10.7 25.6 9.7 11.5 14 6.7
18 10.5 17.8 9.7 M14x1.00 12.4 25.6 9.7 12.5 16 6.7
21 14.0 20.8 13.0 M17x1.00 15.5 26.0 10.1 15.5 18 7.1
Note:
the dimension «I» is the same as the FG
●
models.
Part number example:
PEN.1M.305.XLMT
PM•
Free socket, key (N) or keys (P and U)
with knurled grip
L
X
P
Reference
Model
øC
Dimensions (mm)
A
B
C
D
L
P
X
6.7
6.7
7.1
Series
0M
1M
2M
øD
øB
øA
PM
•
PM
•
PM
•
13.1 8.8 12.7 8.0 25.6 5.3
14.6 10.5 14.2 9.7 25.6 5.3
17.6 14.0 17.2 13.0 26.0 5.3
Part number example:
PMN.1M.305.XLM
PH•
L
M
P
Free socket, key (N) or keys (P and U)
with arctic grip and optional mold stop
Dimensions (mm)
A
B
C
D
F
I
L
M
P
X
6.7
6.7
7.1
Reference
øC
øD
øB
øF
øA
Model
PH
•
PH
•
PH
•
Series
0M
1M
2M
X
I
14.4 8.8 12.7 8.0 10.7 1.5 28.6 9.7 5.3
15.9 10.5 14.2 9.7 12.4 1.5 28.6 9.7 5.3
18.9 14.0 17.2 13.0 15.5 1.5 29.0 10.1 5.3
Part number example:
PHN.1M.305.XLMT
L
S1
3
P
HE•
Fixed socket, nut fixing, key (N)
or keys (P and U) for printed circuit,
watertight
(back panel mounting)
Dimensions (mm)
A
C
e
H
L
N
P
R
S1
S2
Series
0M
1M
2M
øC
øA
e
Reference
Model
H
5 maxi
R
N
S2
HE
•
HE
•
HE
•
17.0 16.8 M13x0.75 5.08 20.8 16.8 5.3 13.8 11.5 14.0
18.0 17.8 M14x1.00 7.62 20.8 16.8 5.3 13.8 12.5 16.0
21.0 20.8 M17x1.00 8.89 20.8 16.8 5.3 13.8 15.5 18.0
Part number example:
HEN.1M.305.XLNP
Insert configuration and electrical characteristics
Male crimp contacts
for plug
øA
Female crimp contacts
for sockets
Contact
type
Test voltage (kV rms)
1)
Contact-contact
Test voltage (kV rms)
1)
Contact-shell
1.00
1.40
0.90
1.00
1.30
1.20
1.10
1.10
1.20
1.15
0.95
Number of contacts
Reference
1
2
4
3
4
3
1
2
0M
302
2
0.9
●
●
●
●
●
●
●
●
20-22-24
1.45
10.0
303
3
0.9
20-22-24
1.70
8.0
304
4
0.7
22-24-26
1.35
7.0
305
5
0.7
22-24-26
1.25
6.5
1M
305
5
0.9
●
●
●
●
●
●
20-22-24
1.30
9.0
307
7
0.7
22-24-26
1.45
7.0
308
8
0.7
22-24-26
1.30
5.0
2M
308
8
0.9
●
●
20-22-24
1.95
10.0
310
10
0.9
●
●
20-22-24
1.80
8.0
312
12
0.7
●
●
22-24-26
1.65
7.0
319
19
0.7
●
●
22-24-26
1.55
5.0
Note:
1)
Test voltage according to IEC 60512-2 test 4a.
2)
For HE• socket.
Rated current (A)
Print (straight)
2)
ø A (mm)
Crimp
AWG
Part Numbering System
FM N
.
1M
.
307
.
X L C T
Model
N = blue (standard)
Keyway (color code): P = yellow
U = green
Series: 0M to 2M
Optional: T = Mold stop, P = Potted
C = Male to crimp
Contact type: M = Female to crimp
N = Female to print
Insert configuration
Part Number Example
FMN.1M.307.XLCT = Straight plug with key (N), 1M series, multipole type with 7 male crimp contacts, with mold stop.
Accessories
FGG-EGG
øA
øC
Crimp contacts
Part
øA
0.9
0.7
0.9
0.7
0.9
0.7
øC
1.10
0.85
1.10
0.85
1.10
0.85
Conductor
Section
AWG
(mm2)
min
24
26
24
26
24
26
max min. max
20
22
20
22
20
22
0.25
0.14
0.25
0.14
0.25
0.14
0.50
0.34
0.50
0.34
0.50
0.34
Part number
male
for plug
FGN.0M.560.ZZC
FGN.0M.555.ZZC
FGN.0M.560.ZZC
FGN.0M.555.ZZC
FGN.0M.560.ZZC
FGN.0M.555.ZZC
female
for socket
EGN.0M.660.ZZM
EGN.0M.655.ZZM
EGN.0M.660.ZZM
EGN.0M.655.ZZM
EGN.0M.660.ZZM
EGN.0M.655.ZZM
Connector
Series
Type
302-303
304-305
305
307-308
308-310
312-319
øA
øC
0M
1M
2M
DCF
Extractors for crimp contacts
Heatshrink boot
Part Number
Supplier
Straight
Raychem
®
Hellerman
®
Elbow 90°
1)
2)
2)
Cable ø (mm)
Note
min.
3.8
3.8
3.8
max
11
11
11
202 A 111-25/86 222 A 111-25/86
202 A 111-25
222 A 111-25
104-1-G
1108-1-G
Contact
ø
0.9
0.7
Extractors
part number
DCF.93.090.4LT
DCF.93.070.4LT
Note :
1)
modified elastomer resistant to fluids with hot melt sealant.
2)
elastomer resistant to fluids. We recommend a thermosetting sealant with this
type of boot.
Note :
this model is used for male and
female contacts.
Tooling
Male
Female
DCE
Positioners for crimp contacts
Connector
Series
0M
1M
Type
302-303
304-305
305
307-308
308-310
312-319
Part
øA
0.9
0.7
0.9
0.7
0.9
0.7
øC
1.10
0.85
1.10
0.85
1.10
0.85
Postioners part number
For male
contacts
DCE.91.090.MVC
DCE.91.070.MVC
DCE.91.090.MVC
DCE.91.070.MVC
DCE.91.090.MVC
DCE.91.070.MVC
For female
contacts
DCE.91.090.MVM
DCE.91.070.MVM
DCE.91.090.MVM
DCE.91.070.MVM
DCE.91.090.MVM
DCE.91.070.MVM
Note :
These positioners are suitable for use with both manual and pneumatic
crimping tools according to the MIL-C-22520/7-01 standard.
2M
Tightening/Untightening torque (plug-socket)
Torque (N.cm)
Series
Tightening
0M
1M
2M
2.8-3.9
3.0-4.0
7.0-12.0
Untightening
4.6-5.9
4.5-6.0
9.0-14.0
Mounting nut torque (on panel)
Series
0M
1M
2M
Torque (N.m)
1.0
1.5
2.0
LEMO
HEADQUARTERS
SWITZERLAND
LEMO SA
Chemin des Champs-Courbes 28 - P.O. Box 194 - CH-1024 Ecublens
Tel. (+41 21) 695 16 00 - Fax (+41 21) 695 16 02 - e-mail: info@lemo.com
www.lemo.com
CAT.MM.LEN.P0508
CHF 1.50 / EURO 1 / USD 1.1 / RMB 10
Data subject to change, printed in Switzerland, May 2008
