MIL-C-22992, Heavy Duty Connectors
 

1.  MIL-C-22992, Class L
2.  MIL-C-22992, QWLD
 
Amphenol Heavy Duty Connectors are the largest sized cylindrical, highly suitable for industrial or military applications, and designed to meet the demands of heavy power interconnections. Manufactured of high strength aluminum allows these Heavy Duty Connectors to withstand high impact which makes them suitable for harsh environments. Other unique features include;

  • Gaskets and/or O-rings at appropriate surfaces create perfect weather tight connections
  • Double stub coupling thread for faster mating, no cross threading, and easy cleaning
  • Left hand accessory threads to minimize cable twisting, wire breakage, accidental connector disassembly
  • Amphenol heavy duty connectors have been exposed to harsh environmental conditions, without compromise of mechanical integrity or degradation of electrical performance.

    Click here to see a list of environmental conditions
    		•
    For more information refer to catalog 12-052
     
     
    MIL-C-22992, Class L Connectors
     
    Amphenol Class L connectors carry current ranges from 40 to 200 amps with conductor sizes 6 to 4/0. Safety features are incorporated to assure protection of personnel and equipment if connectors are inadvertently disconnected under load. Class L connectors are available only in the specific configurations prescribed by MIL-C-22992 for either military or industrial applications. This rigid configuration control assures correct interconnection of electrical circuits for maximum safety and reliability. Controlled parameters include:
    Connector shell style and contact type -wall mount and cable connecting receptacles are supplied with socket contacts only and always lead from the power source. Plugs (with coupling rings) have pin contacts only and always lead to the equipment end.
    Shell size -the direct relationship of shell size to current carrying capability reduces the possibility of inadequate wiring for heavy electrical loads.

    Shell Sizes
    		  
    Current Rating
    		  
    Contact Size
    28
    		  
    40
    		  
    6
    32
    		  
    60
    		  
    4
    44
    		  
    100
    		  
    1/0
    52
    		  
    200
    		  
    4/0
    Keyway position - four positions of the main keyway are used to discriminate between the following power sources:

    two wire D.C
    two wire single phase A.C
    three wire single phase A.C
    four wire three phase A.C
    Insert rotation - when carrying alternating current (A.C), different angular rotations of the insert within the connector shell are used to distinguish between 60 Hertz and 400 Hertz circuits.
    Other outstanding design features:

    Arc quenching design - recessed socket contacts within the insert create an arc suppressing chamber which protects the user when connectors are separated under load.
    Programmed coupling sequence - grounding and neutral contacts engage before power contacts.
    Waterproof design - a unique combination of grommets and seals provides waterproofing in any condition - mated or unmated, capped or uncapped.
    Rugged construction - machined from high strength aluminum. Straight-line attachment of accessories eliminates possibility of cable twisting or misalignment.
    Accessories - supplied with all Class L connectors as indicated on the individual connector descriptions. Replacement accessories may be ordered separately.
    Class L Mating Styles

                          MS90555                                       MS90556
                          MS90557                                       MS90558
    For more information and installation instructions refer to catalog 12-052
     
     
    MIL-C-22992, QWLD Connectors
     
    Amphenols QWLD Series of heavy-duty cylindrical connectors provide reliable power and control functions in hostile environments where ordinary connectors cannot survive. Available in a military and industrial version the QWLD Series meets all of the MIL-C-22992 environmental requirements and incorporates a double stub thread for quicker coupling. The QWLD series is available in over 300 industrial and MS approved insert patterns and supplied with solder or crimp contacts. Coaxial and thermocouple contacts are also available. Other design features include:

  • Alumilite 225 hard anodic finish for abrasion and corrosion resistance or conductive cadmium plate
  • Resilient inserts for moisture sealing, positive proof against shock and vibration
  • Sealing gaskets at every joint for waterproof assembly
  • Cable strain relief provided by clamp bar type accessories
  • Left hand accessory threads to prevent damage from disconnect torque applied in the wrong direction
  • Closed entry socket contact design in solder or replaceable crimp contacts
  • Shell are designed with 5 keyways to assure a perfect mate
    		•
     
    Amphenol QWLD's are available in the following shell styles:
  • Straight plug
  • Wall mounting receptacle
  • Cable connecting plug
  • Box mount receptacle
  • Jam nut receptacle (wall mount)
  • Jam nut receptacle (box mount)
  • Thru bulkhead receptacle
    		•
     
    For more information refer to catalog 12-052