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XCA bayonet square-flange receptacle and plug
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XCA straight and 90° cable-clamp backshells

XCA Marine Bayonet Connectors with Hyperboloid Contacts

Bayonet · hyperboloid sockets · 1–62 contacts · 240 h acid salt spray

XCA is a bayonet circular connector for marine equipment. Hyperboloid wire-spring sockets give smooth mating and low contact resistance; 32 standard layouts in nine shell sizes carry 1 to 62 contacts from 5 A to 40 A. Plugs, square- and round-flange receptacles, potted through-bulkhead receptacles and glass-sealed receptacles are available in aluminum or stainless steel.

Coupling
Bayonet, keyed
Contacts
1 to 62 per connector
Current
5 / 10 / 20 / 40 A
Rated voltage
500 V (1500 V test)
Acid salt spray
240 h
Temperature
−55 to +150 °C

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Key features

  • Hyperboloid wire-spring sockets: low insertion force and low contact resistance
  • Bayonet coupling with five key positions (N, W, X, Y, Z) to prevent mis-mating
  • 32 standard layouts, shell sizes 14 to 39, with Ø1, Ø1.5, Ø2 and Ø3 mm contacts
  • Potted through-bulkhead receptacles and glass-sealed receptacles for sealed enclosures
  • Aluminum with olive-drab cadmium or stainless steel shells; gold-plated copper-alloy contacts
  • Tested for acid atmosphere, 240 h acid salt spray and mould
  • Straight and 90° cable-clamp or cable-tie backshells
  • Contact counts, layouts and materials can be customized

Specifications

Electrical
ParameterValueCondition
Rated voltage / withstanding voltage500 V / 1500 VNormal atmosphere
Rated voltage / withstanding voltage, damp heat500 V / 750 V (sealed), 500 V / 1125 V (standard)
Rated voltage / withstanding voltage, 1 kPa150 V / 300 V (sealed), 250 V / 300 V (standard)
Insulation resistance≥ 5000 MΩ / ≥ 100 MΩNormal atmosphere / damp heat
Mechanical
ParameterValueCondition
CouplingBayonet
Durability500 mating cycles
Vibration10–2000 Hz, 15 g
Shock50 g
Acceleration50 g
Environmental
ParameterValueCondition
Operating temperature−55 to +150 °C
Relative humidityUp to 95 % at 40 °C
Altitude30,000 m
Acid salt spray240 h35 ± 2 °C, 5 % NaCl, pH 3.5 ± 0.5; cycles of 24 h spray and 24 h drying
Acid atmosphere3 cycles of 2 h spray + 22 h storage, then 4 cycles of 2 h spray + 7 days storage35 ± 2 °C, 5 % NaCl, pH 3.5 ± 0.5
Mould84 days, grade 1 or betterGJB 150A.10-2009
Leak rate, through-bulkhead receptacle≤ 46 Pa·cm³/s5.07 × 10⁴ Pa differential
Leak rate, glass-sealed receptacle≤ 0.1 Pa·cm³/s1.52 × 10⁵ Pa differential
Materials
ParameterValueCondition
ShellAluminum alloy, olive-drab cadmium; or stainless steel, passivated
InsulatorThermoset plastic
Grommet and sealsRubber
ContactsCopper alloy, gold plated

GJB 2889 — Chinese specification to which the XCA series is built.

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 contacts and wire sizes

ContactCrimp typeColour bandCrimp barrel ID (mm)Wire (mm²)AWG
Ø1ARed1.00.20 / 0.35 / 0.5022–20
Ø1BBlue1.30.7520–18
Ø1.5ARed1.40.75 / 1.0018
Ø1.5BBlue1.81.20 / 1.5016–14
Ø2ARed2.12.0014
Ø2BBlue2.52.50 / 3.0012
Ø3ARed3.24.0012
Ø3BBlue3.45.0010

Cable-clamp backshell sizes

ShellCable Ø (mm)Length L (mm)
147–823.5
187–823.5
2210–1327
2410–1330
2710–1330
3012–1835.5
3312–1835.5
3616–2340.5
3916–2340.5

Versions

Series codeVersionNotes
XCA…TPlug
XCA…FSquare-flange receptacleWith or without rear thread
XCA…YRound-flange receptacleRear thread for backshells
XCA…S(1), S(2)Potted through-bulkhead receptacle, square flangeS(1): sockets outside, pins inside; S(2): pins outside, sockets inside
XCA…S(3)Potted through-bulkhead receptacle, jam nut, anti-rotationSockets outside, pins inside
XCA…F…M1…D40Glass-sealed square-flange receptacleStainless steel
XC-FJDMP / XC-FJWMPStraight / 90° cable-clamp backshell
XC-FJKMP-02 / XC-FJGWMPStraight / 90° cable-tie backshell

Contact sizes and current ratings

Contact sizeEngaging diameterContact resistanceContact resistance (hermetic)Current ratingWire size
Ø11.0 mm≤ 4.5 mΩ≤ 9 mΩ (potted) / ≤ 13.5 mΩ (glass-sealed)5 A0.20–0.75 mm² (AWG 22–18)
Ø1.51.5 mm≤ 2.5 mΩ≤ 5 mΩ / ≤ 7.5 mΩ10 A0.75–1.50 mm² (AWG 18–14)
Ø22.0 mm≤ 1.25 mΩ≤ 2.5 mΩ / ≤ 3.75 mΩ20 A2.00–3.00 mm² (AWG 14–12)
Ø33.0 mm≤ 0.75 mΩ≤ 1.5 mΩ / ≤ 2.25 mΩ40 A4.00–5.00 mm² (AWG 12–10)

How to order

XCA [shell][type][contacts][contact type] M [finish][key]

Example: XCA18T7Z1MP4(W) — Plug, shell 18, 7 contacts, gold-plated pins, marine environment, rear thread for backshell, aluminum olive-drab cadmium, key W

Code segmentOptions
Shell
  • 14–39 14, 18, 22, 24, 27, 30, 33, 36, 39
Type
  • T Plug
  • F Square-flange receptacle
  • Y Round-flange receptacle
Contacts
  • 1–62 See insert arrangements
Contact type
  • Z1 Pin, gold plated
  • K1 Socket, gold plated
Finish
  • D4 No rear thread, olive-drab cadmium
  • D40 No rear thread, stainless steel passivated
  • P4 Rear thread for backshell, olive-drab cadmium
  • P40 Rear thread for backshell, stainless steel passivated
Key
  • (none) N
  • (W) (X) (Y) (Z) Alternate keys

Plugs are available with P4 or P40 only.

Add (B) for B-type crimp contacts for larger wire, for example XCA18T7Z1MP4(W)(B); without (B), A-type contacts are supplied.

Through-bulkhead receptacles: XCA[shell]S(1|2|3)[contacts]M1M[D4|D40][key]; glass-sealed receptacles: XCA[shell]F[contacts]M1MD40[key].

Cadmium finishes are not RoHS compliant and are supplied on request.

Insert arrangements

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

32 layouts

ArrangementContactsContact sizes
14-111 × Ø3
14-222 × Ø1.5
14-332 × Ø1, 1 × Ø1.5
14-444 × Ø1
18-442 × Ø1, 2 × Ø3
18-555 × Ø1.5
18-777 × Ø1
22-10106 × Ø1, 4 × Ø1.5
22-141414 × Ø1
24-555 × Ø3
24-121212 × Ø1.5
24-191919 × Ø1
27-12124 × Ø1, 8 × Ø2
27-191914 × Ø1, 5 × Ø1.5
27-242424 × Ø1
30-151513 × Ø1.5, 2 × Ø2
30-191910 × Ø1, 4 × Ø1.5, 3 × Ø2, 2 × Ø3
30-222210 × Ø1, 6 × Ø1.5, 6 × Ø2
30-303030 × Ø1
33-222218 × Ø1.5, 4 × Ø2
33-272717 × Ø1, 4 × Ø1.5, 2 × Ø2, 4 × Ø3
33-414141 × Ø1
36-404034 × Ø1, 4 × Ø1.5, 2 × Ø2
36-414131 × Ø1, 10 × Ø1.5
36-555555 × Ø1
39-161616 × Ø3
39-353516 × Ø1, 13 × Ø1.5, 2 × Ø2, 4 × Ø3
39-363618 × Ø1, 6 × Ø1.5, 12 × Ø2
39-464630 × Ø1, 12 × Ø1.5, 4 × Ø2
39-474739 × Ø1, 4 × Ø1.5, 2 × Ø2, 2 × Ø3
39-515143 × Ø1, 8 × Ø1.5
39-626262 × Ø1

Contact counts and terminations

Standard contact counts

  • 1
  • 2
  • 3
  • 4
  • 5
  • 7
  • 10
  • 12
  • 14
  • 15
  • 16
  • 19
  • 22
  • 24
  • 27
  • 30
  • 35
  • 36
  • 40
  • 41
  • 46
  • 47
  • 51
  • 55
  • 62

Terminations

  • Crimp
  • Potted (through-bulkhead)
  • Glass-sealed

Typical applications

  • Shipboard electrical and control equipment
  • Offshore platforms
  • Coastal and port equipment
  • Sealed instrument enclosures

Frequently asked questions

What is a hyperboloid socket?

The socket is a cage of straight wires set at an angle so they form a hyperboloid. The pin is gripped along many lines of contact, giving low, stable resistance, low insertion force and good resistance to vibration.

Which receptacle should I use on a sealed enclosure?

Use the glass-sealed receptacle for the lowest leak rate (≤ 0.1 Pa·cm³/s), or a potted through-bulkhead receptacle when you need plugs on both sides of the wall.

Selection guides

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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