Number of contacts Low Voltage
48
Gender
Standard
Socket / Receptacle
Socket / Receptacle - Fixed Panel Front Mounted
Locking system
Push-pull
Size
4M

Electrical Configuration

Contact Termination Low voltage
PCB - Straight
R (max)
6.1 mOhm
Insert configuration value
4M.348 - 48 Low Voltage
Insulator
L: PEEK
Rated current
3 A
Test voltage (kV rms) Contact-contact
1.10
Test voltage (kV rms) Contact-shell
1.35
Contact Type
Print (straight)
Contact Dia.
0.7 mm (0.028in)
Number of contacts Low Voltage
48
Gender
Standard

Form & Material

Shell style / Model id
ED - Fixed receptacle with square flange for printed circuit
Socket / Receptacle
Fixed Panel Front Mounted
Housing material
Aluminium (nickel plated [SAE AMS QQ N 290], anthracite color) shell and nut, other pieces bronze/brass
Locking system
Push-pull
Keying
5 keys (alpha=105, beta=115, gamma=30, delta=20, plug: male contacts, receptacle: female contacts)

Environment

Technical domain
Motorsport, Security and Defence, Transportation, Aerospace and UAV
Environmental sealing (IP rating)
IP68
Temperature range
-20°C / +200°C
EMI Shielding EIA 364-66A
>= 80 dB (1 GHz), >=70 dB (3 GHz), >= 58 dB (6 GHz), >= 40 dB (10 GHz)
Gunfire vibration
25 Hz - 2000 Hz, 3 axis (Apache helicopter)
Humidity (max)
21 days at 95%
Lighting strike EIA 364-76
10K amps - 6 times
Shock Resistance
300 g [ 3 ms]
Thermal shock
5 cycles: -65°C to +150°C
Vibration-Random
37.8 g rms - 3 axes, 4 hr amb [50 Hz - 2000 Hz]
Vibration-Sine
30 g, 3 axes, 12 hr [10 Hz - 2000 Hz]
Salt Spray Corrosion
max. 48 hr

Technical plans

https://web.lemo.com/img/Illustrations/m/types/4m_348_f.gif
https://web.lemo.com/img/Illustrations/m/models/EDN_xln.gif
https://web.lemo.com/img/Illustrations/m/keys/r.gif

Dimensions

A B C G H K Ls Lr N P SV
mm. 34.6 13.95 24.5 14.5 20.6 2 20 21.9 26.1 7.9 3.3
in. 1.36 0.55 0.96 0.57 0.81 0.08 0.79 0.86 1.03 0.31 0.13
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Solutions Selection Guide
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M series catalog
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Product brief - High-speed data transfer
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Product brief - M series High Power
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Product brief - M series Multi coax solution
Other documents
M - Rugged Ratchet coupling
M - Rugged Ratchet coupling
Harsh environments (IP68)
Ratchet coupling, strong resistance to shocks and vibrations
Stealth Anthracite coating
Light & compact construction
Robust Multi-Keying system with color coding
Main Features
Harsh environments (IP68)
Ratchet coupling, strong resistance to shocks and vibrations
Stealth Anthracite coating
Light & compact construction
Robust Multi-Keying system with color coding
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