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XCD bayonet power plug and receptacles with large power contacts
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XCD Bayonet Power Connectors, 25 to 300 A per Contact

Power only · 25–300 A per contact · hyperboloid sockets · bayonet

XCD is a bayonet circular connector made only for power. Hyperboloid wire-spring sockets from Ø2.5 to Ø14 mm carry 25 to 300 A each, in 17 layouts from one to eight contacts. Plugs, square-flange and jam-nut receptacles are available with solder, crimp or threaded (bolted) cable connection, and pins or sockets can be fitted on either side.

Current per contact
25 to 300 A
Contacts
1 to 8
Rated voltage
500 V (1500 V test)
Coupling
Bayonet, five keys
Temperature
−55 to +150 °C
Mating cycles
500

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Key features

  • Dedicated power connector: contacts from Ø2.5 mm (25 A) to Ø14 mm (300 A)
  • Hyperboloid wire-spring sockets for low contact resistance and smooth mating
  • 17 standard layouts in shell sizes 22 to 85
  • Solder, crimp or threaded (bolted) cable connection
  • Plugs and receptacles can carry pins or sockets
  • Five key positions to prevent mis-mating of parallel power lines
  • Resistant to damp heat, salt spray, mould, rain, sand and dust

Specifications

Electrical
ParameterValueCondition
Rated voltage / withstanding voltage500 V / 1500 VNormal atmosphere
Rated voltage / withstanding voltage, damp heat500 V / 1125 V
Insulation resistance≥ 5000 MΩ / ≥ 1000 MΩNormal / damp heat
Shell-to-shell conductivity≤ 0.012 Ω (nickel), ≤ 0.15 Ω (zinc olive-drab)
Mechanical
ParameterValueCondition
CouplingBayonet
Durability500 mating cycles
Vibration10–2000 Hz, 196 m/s² (20 g)
Shock980 m/s² (100 g)
Acceleration980 m/s² (100 g)
Environmental
ParameterValueCondition
Operating temperature−55 to +150 °C
Relative humidityUp to 95 % at 40 °C
Altitude30,000 m
Materials
ParameterValueCondition
ShellHigh-strength aluminum alloy, electroless nickel
InsulatorThermoset plastic
ContactsCopper alloy, gold plated

Values not listed above — for example vibration level, leak rate or other environmental tests — can be tested to your requirements, including third-party testing. Specifications are subject to change; contact us for the current datasheet.

Crimp and solder contact dimensions

ContactSolder cup or crimp barrel ID (mm)Outside diameter (mm)Length out of shell (mm)
Ø1.52.02.56.2
Ø2.02.53.13.5
Ø2.52.53.16.2
Ø3.54.85.86.2
Ø4.55.56.58.0
Ø5.56.57.510.0
Ø7.59.010.510.5
Ø9.0 crimp12.017.0—
Ø10.010.012.010.0
Ø12.0 crimp15.020.0—

Versions

Series codeVersionNotes
XCD…TPlug
XCD…FSquare-flange receptacleWith or without rear thread
XCD…LJam-nut receptacle
Type I / Type IISolder or crimp cable connection / threaded (bolted) cable connection

Contact sizes and current ratings

Contact sizeEngaging diameterContact resistanceCurrent ratingWire size
Ø2.52.5 mm≤ 1.00 mΩ25 A—
Ø3.53.5 mm≤ 0.50 mΩ50 A—
Ø4.54.5 mm≤ 0.35 mΩ60 A—
Ø5.55.5 mm≤ 0.30 mΩ100 A—
Ø7.57.5 mm≤ 0.20 mΩ150 A—
Ø9.09.0 mm≤ 0.17 mΩ200 A—
Ø1010 mm≤ 0.20 mΩ200 A—
Ø1212 mm≤ 0.15 mΩ250 A—
Ø1414 mm≤ 0.12 mΩ300 A—

How to order

XCD [shell][type][layout][contact][finish][key]

Example: XCD36T4K1P1(W) — Plug, shell 36, layout 36-4 (4 × Ø4.5 mm), gold-plated sockets, nickel with rear thread, key W

Code segmentOptions
Shell
  • 22–85 22, 27, 33, 36, 39, 45, 85
Type
  • T Plug
  • F Square-flange receptacle
  • L Jam-nut receptacle
Layout
  • — See insert arrangements
Contact
  • Z1 Pin, gold plated
  • K1 Socket, gold plated
Finish
  • D1 Electroless nickel, no rear thread
  • P1 Electroless nickel, rear thread
Key
  • (none) N
  • (W) (X) (Y) (Z) Alternate keys

Contacts Ø1.0 to Ø3.0 mm in mixed layouts have the ratings of the XC series (5 to 40 A).

Insert arrangements

16 standard layouts, viewed from the mating face of the pin insert. The arrangement number is written as shell size – layout (for example 25-35).

16 layouts

ArrangementContactsContact sizes
22-111 × Ø10
22-333 × Ø3
22-444 × Ø3
27-111 × Ø12
27-664 × Ø1.5, 2 × Ø3.5
33-995 × Ø2.5, 4 × Ø3.5
36-222 × Ø10
36-333 × Ø4.5
36-444 × Ø4.5
36-665 × Ø2.0, 1 × Ø10
39-333 × Ø10
39-444 × Ø5.5
45-111 × Ø14
45-444 × Ø7.5
45-884 × Ø1.0, 4 × Ø7.5
85-441 × Ø9.0, 3 × Ø12

Contact counts and terminations

Standard contact counts

  • 1
  • 2
  • 3
  • 4
  • 6
  • 8
  • 9

Terminations

  • Solder
  • Crimp
  • Threaded (bolted)

Typical applications

  • Power distribution and generator sets
  • Battery and energy storage systems
  • Motor drives and traction equipment
  • Shore power and shipboard power
  • Test benches with high-current supplies

Frequently asked questions

How many amps can XCD carry?

Each contact carries 25 A (Ø2.5 mm) up to 300 A (Ø14 mm). The 85-4 layout combines one Ø9 mm and three Ø12 mm contacts for three-phase power with a neutral or earth.

Can I bolt the cable instead of crimping?

Yes — the Type II versions connect the cable with a threaded stud. Tell us the cable size and we will propose the terminal.

From sample to production

  1. Send your requirement

    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 made to your order. 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.

Need a quote or a drawing?

Send your part number, pin-out or drawing. An engineer will reply by email.

Request a quote

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