HARSH ENVIRONMENT
RATCHET COUPLING
M SERIES CONNECTOR
Rapid ratchet coupling mechanism
The M Series connector offers
a new innovative design for motorsport
applica tions 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 Material and treatment
ø A
ø C
ø B
ø F
ø D
L
M P
X
I
FG• Straight plug, key (N) or keys (P and U)
with arctic grip and optional mold stop
ø C
e
L
P
D
E maxi
S 2
S 1
EG• Fixed socket, nut fixing, key (N)
or keys (P and U)
Models
Note: 1) at 1.8m/15h. 2) Anthracite colour.
Characteristics Value Standard
Endurance 3000 cycles IEC 60512-5 test 9a
Operating temperature -50°C/+200°C –
Resistance to vibration 10-2000Hz, 15g IEC 60512-4 test 6d
Shock resistance 100g, 6ms IEC 60512-6 test 6c
Salt spray corrosion test 144h IEC 60512-6 test 11f
Protection index (at 2m, 30’)1) IP68 IEC 60529
Gunfire satisfied MIL STD-810-E
Characteristics Value Surface treatment
Outershell, coupling nut Aluminium (AA 6262A) Ni (5 µm)2)
Earthing crown Bronze (UNS C 54400) Au (1.5 µm)
Ratchet PEEK graphite –
Insulator PEEK –
Contacts Brass/Bronze Ni (3 µm) + Au (1 µm)
Gaskets FPM + FVMQ –
Sealing resin Epoxy –
Reference
Model Series
FG•0M
FG•1M
FG•2M
13.1 8.8 12.7 8.0 24.1 4.0 6.7
14.6 10.5 14.2 9.7 24.1 4.0 6.7
17.6 14.0 17.2 13.0 24.5 4.0 7.1
Dimensions (mm)
ABCDL PX
4.4
5.8
7.4
Weight
max (g)
Part number example: FGN.1M.305.XLCT
Reference
Model Series
EG•0M
EG•1M
EG•2M
12.7 6.8 M9x0.6 5.0 18.1 5.3 8.2 11.0
14.2 6.8 M11x1.0 4.5 18.1 5.3 9.5 13.0
17.2 6.8 M14x1.0 4.5 18.1 5.3 12.5 17.0
Dimensions (mm)
C D e E L P S1 S2
Part number example: EGN.1M.305.XLM
A
F
X
P
G
M
H
J
ø C
ø B
ø D
PB• Fixed socket with antivibration flange,
key (N) or keys (P and U), 2 holes fixing
Reference
Model Series
PB•0M
PB•1M
PB•2M
27.0 8.8 14.5 8.0 15.3 8.3 21.4 3.3 2.0 5.3 6.7
29.0 10.5 16.5 9.7 15.3 8.3 23.4 3.3 2.0 5.3 6.7
32.0 14.0 19.5 13.0 15.7 8.3 26.4 3.3 2.0 5.3 7.1
Dimensions (mm)
ABCDFGHJMPX
Part number example: PBN.1M.305.XLM
e
ø A
L
5.3
13.8
5 maxi S 2
ø B
ø F
ø C
ø D
M
X
I
S 1
PE• Fixed socket, nut fixing, key (N) or keys
(P and U) and mold stop
(back panel mounting)
Reference
Model Series
PE•0M
PE•1M
PE•2M
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
Dimensions (mm)
A B C D e F L M S1 S2 X
Note: the dimension «I» is the same as the FG●models.
ø A
ø C
ø B
ø D
L
X P
FM• Straight plug, key (N) or keys (P and U)
with knurled grip
Reference
Model Series
FM•0M
FM•1M
FM•2M
14.4 8.8 12.7 8.0 10.7 1.5 27.1 9.7 4.0 6.7
15.9 10.5 14.2 9.7 12.4 1.5 27.1 9.7 4.0 6.7
18.9 14.0 17.2 13.0 15.5 1.5 27.5 10.1 4.0 7.1
Dimensions (mm)
ABCDF I LMPX
Part number example: FMN.1M.305.XLC
Part number example: PEN.1M.305.XLMT
2.7
3.3
4.5
Weight
max
(g)
3.6
5.8
8.0
Weight
max
(g)
Insert configuration and electrical characteristics
Reference
Number of contacts
ø A (mm)
Crimp
Print (straight)2)
AWG
Test voltage (kV rms)1)
Contact-contact
Test voltage (kV rms)1)
Contact-shell
Rated current (A)
302
303
304
305
2 0.9 ●●20-22-24 1.45 1.00 10.0
3 0.9 ●●20-22-24 1.70 1.40 8.0
4 0.7 ●●22-24-26 1.35 0.90 7.0
5 0.7 ●●22-24-26 1.25 1.00 6.5
Contact
type
ø A
Male crimp contacts
for plug
Female crimp contacts
for sockets
Note: 1) Test voltage according to IEC 60512-2 test 4a. 2) For HE• socket.
14
2
3
14
23
0M
305
307
308
5 0.9 ●●
20-22-24 1.30 1.30 9.0
7 0.7 ●●
22-24-26 1.45 1.20 7.0
8 0.7 ●●
22-24-26 1.30 1.10 5.0
1M
308
310
312
319
8 0.9 ●●
20-22-24 1.95 1.10 10.0
10 0.9 ●●
20-22-24 1.80 1.20 8.0
12 0.7 ●●
22-24-26 1.65 1.15 7.0
19 0.7 ●●
22-24-26 1.55 0.95 5.0
2M
e
ø A
H
ø C
L
P
3
R
5 maxi
N
S 1
S 2
HE• Fixed socket, nut fixing, key (N)
or keys (P and U) for printed circuit,
watertight (back panel mounting)
Reference
Model Series
HE•0M
HE•1M
HE•2M
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
Dimensions (mm)
A C e H L N P R S1 S2
Part number example: HEN.1M.305.XLNP
ø A
ø C
L
P
ø B
ø F
ø D
M
X
I
PH• Free socket, key (N) or keys (P and U)
with arctic grip and optional mold stop
Reference
Model Series
PH•0M
PH•1M
PH•2M
13.1 8.8 12.7 8.0 25.6 5.3 6.7
14.6 10.5 14.2 9.7 25.6 5.3 6.7
17.6 14.0 17.2 13.0 26.0 5.3 7.1
Dimensions (mm)
ABCDL PX
Part number example: PHN.1M.305.XLMT
ø A
ø C
ø B
ø D
L
X P
PM• Free socket, key (N) or keys (P and U)
with knurled grip
Part number example: PMN.1M.305.XLM
Reference
Model Series
PM•0M
PM•1M
PM•2M
14.4 8.8 12.7 8.0 10.7 1.5 28.6 9.7 5.3 6.7
15.9 10.5 14.2 9.7 12.4 1.5 28.6 9.7 5.3 6.7
18.9 14.0 17.2 13.0 15.5 1.5 29.0 10.1 5.3 7.1
Dimensions (mm)
ABCDF I LMPX
T
Part
ø A ø C
Conductor
AWG
min max min. max
Accessories
Part Number
Straight Elbow 90°
202 A 111-25/86 222 A 111-25/86
202 A 111-25 222 A 111-25
104-1-G 1108-1-G
1) 3.8 11
2) 3.8 11
2) 3.8 11
Cable ø (mm)
min. max
Note
Raychem®
Hellerman®
Supplier
Heatshrink boot
ø A
ø A
ø C
ø C
FGG-EGG Crimp contacts
Part number
male female
for plug for socket
Section
(mm2)
Note: These positioners are suitable for use with both manual and pneumatic
crimping tools according to the MIL-C-22520/7-01 standard.
Male Female
Tooling
CAT.MM.LEN.P0508 CHF 1.50 / EURO 1 / USD 1.1 / RMB 10 Data subject to change, printed in Switzerland, May 2008
www.lemo.com
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
Connector
Series Type
302-303
0M 304-305
305
1M 307-308
308-310
2M 312-319
0.9 1.10
0.7 0.85
0.9 1.10
0.7 0.85
0.9 1.10
0.7 0.85
24 20 0.25 0.50
26 22 0.14 0.34
24 20 0.25 0.50
26 22 0.14 0.34
24 20 0.25 0.50
26 22 0.14 0.34
FGN.0M.560.ZZC EGN.0M.660.ZZM
FGN.0M.555.ZZC EGN.0M.655.ZZM
FGN.0M.560.ZZC EGN.0M.660.ZZM
FGN.0M.555.ZZC EGN.0M.655.ZZM
FGN.0M.560.ZZC EGN.0M.660.ZZM
FGN.0M.555.ZZC EGN.0M.655.ZZM
Part
ø A ø C
DCE Positioners for crimp contacts
Postioners part number
For male For female
contacts contacts
Connector
Series Type
302-303
0M 304-305
305
1M 307-308
308-310
2M 312-319
0.9 1.10
0.7 0.85
0.9 1.10
0.7 0.85
0.9 1.10
0.7 0.85
DCE.91.090.MVC DCE.91.090.MVM
DCE.91.070.MVC DCE.91.070.MVM
DCE.91.090.MVC DCE.91.090.MVM
DCE.91.070.MVC DCE.91.070.MVM
DCE.91.090.MVC DCE.91.090.MVM
DCE.91.070.MVC DCE.91.070.MVM
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.
Extractors
part number
DCF.93.090.4LT
DCF.93.070.4LT
0.9
0.7
Contact
ø
DCF Extractors for crimp contacts
Part Numbering System
Tightening/Untightening torque (plug-socket) Mounting nut torque (on panel)
Torque (N.cm)
Tightening Untightening
2.8-3.9 4.6-5.9
3.0-4.0 4.5-6.0
7.0-12.0 9.0-14.0
Series
0M
1M
2M
Torque (N.m)
1.0
1.5
2.0
Series
0M
1M
2M
FM N 1M 307 XLC
.. .
Model
N = blue (standard)
Keyway (color code): P = yellow
U = green
Series: 0M to 2M Insert configuration
Optional: T = Mold stop, P = Potted
C = Male to crimp
Contact type: M = Female to crimp
N = Female to print
Part Number Example
FMN.1M.307.XLCT = Straight plug with key (N), 1M series, multipole type with 7 male crimp contacts, with mold stop.
Note: this model is used for male and
female contacts.
