2M Ram-Lock

Positive-Locking Push-Pull Interface

2MRAM MATERIALS AND FINISHES

Shells Aluminum Alloy or Stainless Steel

Contacts Copper Alloy, gold plated

Insulators Polyphenylene Sulfide (PPS)

Contact Retention Beryllium Copper Alloy

Grommet, Interfacial Seal, O-Ring Fluorosilicone Rubber

Ball Bearing Stainless Steel

Wave Springs Stainless Steel

EMI Band, Nickel Plated Beryllium Copper Alloy

Amphenol’s Ram-Lock Push-Pull interface

is now available in the 2M family of products!

Featuring a positive locking Interface, the Ram-Lock is perfect for applications where accidental unmating is

a concern. The user must pull on the operating sleeve of the plug to unmate rather than pulling on the cable.

Utilizing ball bearings for locking and a traditional D38999 EMI band for shell-to-shell conductivity allows for

much more consistent and reliable engagement between the plug and receptacle.

2MRAM Features

• Push-pull with positive lock

• Visual, tactile, and audible full-mate indication

• Prevents accidental unmating when cable is pulled

• Full environmental sealing and EMI protectio

• Lower mate/unmate forces compared to 2M804

2MRAM VS 38999

Specification

2MRAM

MIL-DTL 38999 Series III

Signal Count

1 to 85

1 to 187

Insulation Resistance

5,000 megaohms min

5,000 megaohms min

Operating Temperature

-65°C to +175°C

-65°C to +175°C

Shock

300 G ± 15

300 G ± 15

Vibration

"37.0 G Random

30.0 G Sine"

"43.9 G Random

60.0 G Sine"

Shielding Effectiveness

"40 dB min. from

100 MHz to 1000 MHz"

"65 dB min. from

100 MHz to 1000 MHz"

Durability

1,000 mating cycles min. 500 mating cycles

Shell to Shell Conductivity

2.5 mV drop max

2.5 mV drop max

Contacts

Per AS39029

Per AS39029

Applications:

• Soldier worn equipment

• Electric vehicle recharging

• Battery terminal connections

• In-line power and signal connections

Important Note:

Plug and receptacle terminology is reversed compared

to 2M804. This is because the user pulls on the

operating sleeve to disengage rather than the cable.

For example, 2M804-003 is known as a “receptacle”,

2M RAM-003 is a “plug.”

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Contact Amphenol Aerospace for more information at 800-678-0141 • www.amphenol-aerospace.com