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Amphenol ACA-B Series Connectors
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Amphenol ACA-B Series Connectors
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RUGGED REVERSE BAYONET CONNECTORS FOR POWER AND SIGNAL APPLICATIONS

Amphenol ACA-B connectors are designed for commercial and industrial applications requiring a bayonet style coupling device for high power and/or signal. Similar in design to a SAE-AS50151, ACA-B’s are a quick, positive mating type of connector, perfect for markets such as factory automation, robotics, and process control equipment. Amphenol’s ACA-B series has proven itself valuable in the military ground vehicle and alternative energy markets because of its low cost, high reliability design. For full product details on the ACA-B bayonet series, see the specifications below.

 

 

Features

  • Commercial and Military
    ACA-B series connectors are made in accordance with German military specification VG95234 and SAE-AS50151 (MIL-DTL-5015). Originally designed for NATO combat vehicles, aircraft, and airborne equipment, these rugged connectors are now in a broad range of demanding commercial applications from trucks to industrial robots.
  • Simple and Fast Mating and Un-Mating
    ACA-B series connectors use a unique “reverse bayonet” coupling system that allows for mating and un-mating with a simple 120˚ rotation without compromising shock, vibration, or moisture resistance. The large, open ramps are easily cleaned of mud or other contaminants. The ramp coupling system eliminates the possibility of cross-threading and thread damage possible with standard SAE-AS50151 (MIL-DTL-5015) threaded connectors. This design is easier to mate in cold weather, tight spaces, or on equipment which must be disassembled frequently.
  • Shock and Vibration Resistant
    ACA-B series connectors are supplied with military-standard resistant sealing and a three-point bayonet coupling nut. The three-point bayonet coupling incorporates a wave spring and washer specified by the rail industry. ACA-B series connectors pass the most stringent tests of shock and vibration performance while maintaining proper continuity and water tightness. Rugged aluminum alloy shell and hardware are light in weight yet highly resistant to damage.
  • Audible, Visual and Tactile Confirmation of Mating
    ACA-B series connectors provide three independent checks that the connector halves are mated. When the coupling nut is fully rotated, the three studs snap into the end of the ramps with a loud “click” (audible). The user can feel the bolts click into the grooves (tactile). Blue dots on the receptacle and coupling nut are aligned when the connector is properly mated (visual).
  • Environmental
    The sealing is not compromised by any of the operating conditions defined in SAE-AS50151 (MIL-DTL-5015) and is completely watertight when mated.
  • Broad Temperature Range
    These connectors will operate in temperatures from -67˚ to +257˚F (-55˚ to +125˚C). High-temperature and zero-halogen insulators are also available. Contact us for ordering information.
  • Wide Range of Wire Gauges and Current-Carrying Capability
    Up to 150 amps with accommodations for wire gauges from size 26 to size 0 AWG.
  • Wide Variety of Contacts
    High-reliability screw machine contacts with silver or gold plating are available in sizes from 20 to 0 to accommodate wire gauges from 26 to 0 AWG. Solder, crimp, PC, co-ax, and thermocouple contacts are available.
  • Intermateable and Intermountable With All VG95234 Connectors
    The standard SAE-AS50151 (MIL-DTL-5015) layouts and dimensions ensure intermateability and intermountability with all connectors made in accordance with VG95234.

All ACA-B connectors are intermountable with standard threaded SAE-AS50151 (MIL-DTL-5015) connectors, often making it possible to upgrade without changing panel cutouts or clearances.

 

 

Materials & Finishes

Shell
Aluminum alloy (can be grounded)
 
Shell Plating
Olive drab chromate coating over cadmium plating, conductive black alloy, black alloy, electroless nickel, green zinc, gray zinc and black anodized
 
Contacts
Copper alloy
 
Contact Platings
Hard silver plating or gold plating
 
Insulator*
Neoprene
 
Seals
Silicone, Neoprene, or Viton®**

 

* Optional zero-halogen and high-temperature insulators are available. Contact us for information.

** Viton® is a registered trademark of DuPont DOW Elastomers

 

 

Electrical Data

Operating Voltage/Test Voltage according to
SAE-AS50151 (MIL-DTL-5015)H
The indicated values for the operating voltage are limits concerning the electrical function. When the working voltage exceeds 50V, safety precautions must be in accordance with the following standards: VDE 0100, IEC 309-1 or applicable national standards.

 

 

 

Current Rating

*Test amps, multiconductor using Radsok contact

 

Altitude Voltage Derating* Chart

* No attempt has been made to recommend operating voltages. The designer must determine own operating voltage by the application of a safety factor to the above derating chart to compensate for circuit transients, surges, etc.

† Not corrected for changes in density due to variations in temperature.

Wire Range Sizes
26 AWG to 0 AWG (see contact selection)
 
Contact Resistance per
SAE-AS50151 (MIL-DTL-5015)H p 3.15
 
 
 

 

 

Contact Size

Contact Resistance
Milliohm Max.

Potential Voltage Drop in Millivolts Max.

 

16/16S

6

21

 

12

3

20

 

8

1/(0.44)*

12 (20)*

 

4

0.5/(0.23)*

10 (18)*

 

0

0.2/(0.18)*

10 (27)*

 

*Using Radsok contact

 
 
Insulation Resistance
@77˚F (25˚C) > 5,000 Megohms

 

 

Mechanical

Operating Temperature
-67˚ to +257˚F (-55˚ to +125˚C) Neoprene
 
Sealing
33-foot submersible
Sealed when mated. ≈ IP 67 and NEMA 4P
 
Wire Sealing Range
The connector is designed for individual wire sealing. Sealing of an outer cable jacket on multiconductor cables must be accomplished with an appropriate endbell. Sealing is only guaranteed if wires used are according to MIL-W-5086 or within the listed ranges.
 
 

 

 

 

Sealing Range

 

Contact Size

Inches

MM

 

16

.064 - .130

1.62 - 3.30

 

12

.114 - .170

2.89 - 4.31

 

8

.164 - .255

4.16 - 6.47

 

4

.272 - .370

6.90 - 9.30

 

0

.415 - .550

10.50 - 13.97

 
 
Insulation Strip Lengths
See Contact Selection Chart
 
Mating Life
2,000 cycles minimum (AIB/GT) 500 cycles minimum (AIBC/ACA-B)
 
Salt Spray
Olive drab chromate over cadmium - 500 hours
Non-conductive black alloy - 48 to 200 hours
Conductive black alloy - 48 to 200 hours
Black anodized - 500+ hours
Electroless nickel - 48 hours
Gray Zinc nickel - 500 hours
 
Heat
Neoprene low-smoke, zero-halogen (LSZH) 257˚F (+125˚C); Viton 392˚F (+200˚C)
 
Chemical Resistance
Diesel Fuel, JP-4 , Hydraulic Fluid, Gasoline
48-hour intermittent spray for each chemical with no deterioration, followed by Contact Retention (CR), Insulation Resistance (IR), Dielectric Withstanding Voltage tests (DWV)
 
Corrosion Resistance
Olive Drab Cadmium-Plated 48 hours per SAE-AS50151 (MIL-DTL-5015) (3.17/4.6.13)
 
Fluid Immersion
Hydraulic Fluid 20 hours per SAE-AS50151 (MIL-DTL-5015) (3.19/4.6.15)
Lubrication Oil 20 hours per SAE-AS50151 (MIL-DTL-5015) (3.19/4.6.15)
 
Vibration
Per MIL-STD-810C, method 516.2, procedure VIII
1.0 g peak from 5 to 25 Hz
.030” double amplitude from 25 to 57 Hz
5g peak from 57 to 500 Hz
 
Basic Shock
Per MIL-STD-810C, method 516.2, procedure I pulse at half-sine wave of 30g for 11 seconds
 
Gun fire Shock
Per MIL-STD-810C, method 516.2, procedure IV pulse at half-sine wave of 100g for 1.5 seconds
 
Ballistic Shock
Per MIL-STD-810C, method 516.2, procedure IV pulse at half sine wave of 200g for .5 seconds
 
Contact Type
Solder, crimp, PC, co-ax, or thermocouple. Hard silver or gold plating.
 
Contact Insertion
From rear with simple hand-tool. Removable, 5 cycles minimum.
 
Contact Retention
Pin and socket contacts are designed to resist severe vibration and repeated connection and disconnection. Contact retention and separation is tested according to SAE-AS50151 (MIL-DTL-5015)H (4.6.6.1)
 
 

 

 

Contact Size

Retention Force Min.

 

16

10

 

12

15

 

8

20

 

4

20

 

0

25

 
 
Number of Circuits
1 to 85
 
Polarization
Key and keyway plus three point bayonet with optional rotational polarization.
 
Rear Accessories
Maximum Torque
 
 

 

 

Size

In./Lb. Max.

 

10SL

26

 

14S

44

 

16

50

 

16S

50

 

18

55

 

20

65

 

22

85

 

24

90

 

28

114

 

32

120

 

36

153

 

40

170

 
 



 

 

 

Thermocouple Codes

 

Material

Color Code

Code

 

Iron

Black

IR

 

Constantan

Yellow

CON

 

Copper alloy

-

Cu

 

Chromel

White

CH

 

Alumel

Green

AL

 

Thermocouple Types:
J = Iron-Constantan
K = Alumel-Chromel
T = Copper-Constantan
E = Chromel-Constantan

 
 
Approvals/ Agency Listing
UL File# E115497

 

 

Cross-Section

 

 

Components

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Interconnect Product Manufacturer, Electrical, Electronic, Fiber Optic Connectors, Coaxial Cable and more
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