SHX4 square-flange receptacle and plug in aluminum bronze

SHX4 Underwater Connectors, 10 MPa Mated, up to 115 A

1000 m water depth · 10 MPa mated · contacts up to 115 A

SHX4 is a metal-shell underwater connector for deep-water instruments and equipment, built to the Chinese shipbuilding standard CB/T 3939-2000. It is used at 1000 m water depth, withstands 10 MPa hydrostatic pressure when mated, and is supplied with molded watertight cables as a complete sealed assembly.

Depth
1000 m
Pressure rating
10 MPa mated
Contacts
1 to 41
Current rating
7.5–115 A
Temperature
−40 to +85 °C
Shell sizes
9M, 10M, 14M, 20M

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Key features

  • Radial and axial sealing; withstands 10 MPa hydrostatic pressure when mated
  • Contacts from size 20 (7.5 A) to size 2 (115 A), plus 50 Ω / 75 Ω coax and high-voltage contacts
  • Removable mechanical backshell for field assembly and service, or vulcanized backshell for maximum sealing
  • Plugs, square-flange receptacles, bulkhead feed-through receptacles and cable receptacles
  • Titanium, aluminum bronze or stainless-steel shells; protective caps
  • Custom contact counts, cable types and lengths on request

Specifications

Pressure and depth
ParameterValueCondition
Water depth1000 m
Hydrostatic pressure, mated10 MPa
Electrical
ParameterValueCondition
Insulation resistance≥ 5000 MΩ / ≥ 1000 MΩRoom temperature / after environmental tests
Dielectric withstanding voltageBy insert arrangementTested to your requirements
Mechanical and environmental
ParameterValueCondition
Durability500 mating cycles
Vibration10–500 Hz, 100 m/s²
Shock120 g, half-sine, 6 ms
Operating temperature−40 to +85 °C
Mold resistanceGrade 2, 28 daysGJB 150A

CB/T 3939-2000 — Chinese shipbuilding industry standard for watertight connectors.

Parameters not listed above — for example vibration level, leak rate or other environmental tests — can be tested to your requirements, including third-party testing.

Contact layouts

Standard layouts by shell size, viewed from the mating face of the pin insert.

ShellContacts
9M4 × size 16
9M7 × size 20
10M2 × size 14
10M3 × size 14
10M4 × size 16
10M5 × size 16
10M7 × size 20
10M1 × 75 Ω coax
10M1 × high-voltage contact
14M2 × size 20
14M3 × size 20
14M4 × size 20
14M3 × size 10 + 5 × size 20
14M12 × size 20
14M1 × size 6
14M3 × size 12
14M4 × size 12
14M7 × size 14
14M1 × high-voltage contact
14M12 × size 16
14M19 × size 20
14M1 × 50 Ω coax
20M1 × size 2
20M3 × size 6
20M4 × size 6
20M7 × size 12
20M16 × size 12
20M21 × size 14
20M27 × size 16
20M32 × size 16
20M41 × size 20
20M4 × high-voltage contacts

Withstanding voltage depends on the layout. Size 10 and high-voltage contact ratings on request.

Versions

Series codeVersionNotes
SHX4FEDPlugMechanical (A) or vulcanized (E) backshell
SHX4RECSquare-flange receptacle
SHX4TECBulkhead feed-through receptaclePin one side, socket the other
SHX4PCECable receptacle
SHX4TFG / ZFGProtective caps for plug / receptacle

Shell materials and finishes

CodeShell materialFinishShell conductivityEMI shieldingTemperatureSalt spray
TiTitanium alloyNone——−40 to +85 °C1000 h
KStainless steelPassivated——−40 to +85 °C500 h
CAAluminum bronzeNickel——−40 to +85 °C1000 h

Contact sizes and current ratings

Contact sizeEngaging diameterContact resistanceCurrent ratingWire size
201.02 mm≤ 7.3 mΩ7.5 AAWG 22, 24, 26
161.59 mm≤ 3.7 mΩ13 AAWG 20, 22, 24
141.93 mm≤ 2.5 mΩ20 AAWG 14, 16, 18
122.39 mm≤ 1.83 mΩ23 AAWG 12, 14, 16
65 mm≤ 1 mΩ65 AAWG 6, 8, 10
27 mm≤ 0.6 mΩ115 AAWG 2, 4, 6
TX50 / TX75Coax—50 Ω / 75 ΩContact us

How to order

SHX4 [type] [contact] [shell] [contacts] -[size] [backshell] [cable] [shell material]

Example: SHX4FEDF9M07-20A60CA — Plug, socket contacts, shell 9M, 7 size-20 contacts, mechanical backshell, for 6 mm watertight cable, aluminum bronze

Code segmentOptions
Type
  • FED Plug
  • REC Square-flange receptacle
  • TEC Bulkhead feed-through receptacle
  • PCE Cable receptacle
Contact
  • M Pin
  • F Socket
  • I Pin/socket (feed-through only)
Shell
  • 9M 10M 14M 20M Shell size
Contacts and size
  • e.g. 07-20 7 contacts, size 20 — see contact layouts
Backshell
  • A Mechanical, with rubber boot (plugs, cable receptacles)
  • E Vulcanized
Cable
  • 60 / 100 / 115 / 190 Cable diameter in 0.1 mm for 9M / 10M / 14M / 20M
Shell material
  • CA Aluminum bronze
  • Ti Titanium alloy
  • K Stainless steel

Other cable diameters on request.

Typical applications

  • Deep-water instruments and sensors
  • ROVs and subsea vehicles
  • Seafloor observation equipment
  • Offshore oil and gas equipment

Frequently asked questions

How deep can SHX4 be used?

SHX4 is used at 1000 m water depth and withstands 10 MPa hydrostatic pressure when mated.

Can I service SHX4 in the field?

Yes. The removable mechanical backshell allows field assembly and maintenance; the vulcanized backshell gives the highest sealing.

Selection guides

Related series

From sample to production

  1. Send your requirements

    Part number, drawing, pin-out or a short description of your application.

  2. Configuration and quote

    Our engineers match the configuration and reply with a drawing and quotation.

  3. Samples

    Samples are built to order. The minimum order quantity is 10 pieces, and samples and production orders each take 4–8 weeks. Third-party testing to your specification is available on request.

  4. Your approval

    You test the samples in your own equipment and approve them.

  5. Series production

    Production follows the approved sample configuration, with machining, molding, plating and assembly in our own Shenyang factory.

Need a quote or a drawing?

Send your part number, pin-out or drawing. Every inquiry is acknowledged by email within 1 business day, and an engineer follows up with a matched configuration, drawing or quotation.

Request a quote