M SERIESHIGH POWER®

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Up to 430A maximum rated current
Ultra compact, light and watertight
Unipole & Multipole configurations

State-of-the-art High Power Interconnect Solution

HARSH
ENVIRONMENTS
YOUR RUGGED SOLUTIONS

Rapidly improving battery technologies, capacities and cost as well as increasing tendency
towards autonomous/driverless vehicles have created a clear trend towards increased power
requirements for connectors in the automotive, transportation, defense, aerospace, robotics andmotorsport industries.
The new LEMO M series ratchet coupling High Power connectors were developed to satisfy themost stringent connection requirements for High Power distribution of electronic devices andelectric drive vehicles - essentially any system with electrical motors, batteries and inverters wherehigh torque may be required for short or longer period.
This new LEMO M series High Power portfolio constitutes one of the most comprehensive,compact, light, rugged, safe and completely waterproof reliable interconnect solution set available
on the market for high power requirements.
Product safety notice & disclaimers:
Please read and follow all instructions specified on https://www.lemo.com/en/about-lemo/product-safety-notice-and-disclaimers

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Leading-edge High Power connectors basedon LEMO’s proven harsh environment M series
LEMO’s new High Power connectors have been specifically designed
using its field proven, robust, light & compact M series bodies.
Those very high performing connector shells have then been combinedwith newly developed insulators and state-of-the-art efficient gold-plated
high power contacts.

New state-of-the-art
High Power contacts
LEMO leveraged its integrated design and manufacturingcore capabilities to develop new gold plated copper crimp contacts.
The unique proprietary contact design maximizes the contact surface
to carry the highest current while minimizing heat build-up.
• Low contact resistance limiting joule heating• High reliability• Increased surge protection• Protective cap meets user safety requirements• Low mating forces• High mating cycle durability (3000+)
DiameterWire section∅ (mm)mm2AWG

41085166625

4835/50

2/1Insert configurations
1Accommodating conductors from 10 mm2 (8 AWG) to 50 mm2 (1 AWG),
the LEMO’s High Power connectors come in various unipole & multipole
configurations for single and three-phases requirements.

1B

3C

32

A

2Key features
As a result, these new configurations ensure high quality and reliable high power interconnect solutions
for harsh environments where mission critical solutions are needed, with the following key features:• Various sizes & configurations providing maximum rated
current ranging from 140A to 430A
• 360° screening for full EMC shielding• Wide temperature range -55°C to 200°C• Broad range of lightweight aluminium shell models• Compact design for space savings• Ratchet-coupling mechanism• High shock and vibration resistance• Oil and fuel resistant• Sealed to IP68 mated; IP68 unmated as options• Blind mating / keying / colour coding• Reverse gender configuration option• Scoop proof & IP2X finger protection• Alternative housing material: Brass for 1000 hours salt fogresistance• Anthracite Aluminium for low reflections• Tested to MIL Standards (MIL-STD-810F)• Threaded option for MIL-DTL-38999M backshell(©) LEMO All right reserved®

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Main Benefits
Higher rated current through smaller
footprint enabling ultra compact &lighter integrations for high power requirements

Quick, blind and safe mating:
3/4 turn to seat with visual aid
and matching colour code rings

Full user safety thanks totouch proof protection onhigh power contacts

3000+ mating cycles
guaranteed providing longer
service life & optimized costof ownership

Reliable and proven performance in harsh environmentswith a broad temperature range

Broad range of models, sizes and configurations,
including IP68 mated and unmated, for a wide arrayof demanding applications

Proven high performing solutions
For any given conductor cross section between 10 mm2 and 50 mm2,
LEMO’s High Power connectors, thanks to their unique design, carry higher
rated/derated currents through smaller connector sizes than equivalent solutions on the market.

This allows for higher density and lower spacing integration on any device
and reduces weight.

M series High Power Derating curves
400Rated current vs. connector size comparison(35mm2 cable)

50Competitor 1

Socket diameter (mm)Derated current (A) 1)

350
300
250
200
150
100

40Competitor 2
30LEMO
20
10500255075100
125
Ambient temperature (°C)

1500180 2)

3M.H14 (10 mm2)

TM.H15 (16 mm2)

5M.H18 (50 mm2)

4M.H16 (25 mm2)

LM.H18 (35 mm2)

5M.H34 & 5M.G33 (10 mm2)

0100

200
Rated current (A)300

Note: 1) derated current = max rated current x 0.8 (safety factor).
2) maximum cable temperature specification.

Applications

Aerospace

AutomotiveDefense(©) LEMO All right reserved

Industrial &Robotics

Unmannedvehicles

400

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About LEMOLEMO is the acknowledged leader in the design and manufacture of reliablehigh quality interconnect solutions. LEMO’s Push-Pull and ratchet-coupling
connectors are found in a variety of challenging application environments
including medical, industrial & machines, automotive, test & measurement,
defense, audio-video and telecommunications.

LEMO has been designing precision connectors for more than 75 years.
Offering over 90,000 combinations of product that continue to grow throughcustom specific designs, LEMO and its affiliated sister companies REDEL,NORTHWIRE and COELVER currently serve more than 150,000 customers inover 80 countries around the world.

Cable assembly

Custom solutions

LEMO is renowned for the quality of the connector solutions and thisis matched by the cable assemblies supplied.
Commitment to quality is supported by 100% testing of all assemblies.
Capabilities include potting and overmold to support rapid prototype anddevelopment through to high volume series production. LEMO subsidiaries are equipped with modern equipment, much of it custom built specifically for customer needs. These include cut and strip machinery, robotic
assembly and automatic test equipment to ensure maximum reliability andconfidence in LEMO cable assemblies.

Contacts, connectors and integrated cable assembly solutions meet themost demanding technical market requirements. LEMO’s connector solutions and value-added services are characterized by their exclusive focus
on meeting the customer’s needs.
• Precise implementation of application-specific requirements
regarding design, functionality, cost and exclusivity• Custom connector solutions derived from standard products• One-to-one local expertise• Quick prototyping and production turn around
Custom interconnect solutions based on your requirements
Requirements

ProposalPrototyping

Production

STEP 1

STEP 2

STEP 3

STEP 4

Discover the wide rangeof configurations in our catalog

www.lemo.com
CAT.HP.LEN.P0322, © LEMO All right reservedData subject to change, printed in Switzerland, March 2022®

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