Circular Cable Assemblies

Part Number	Description / PDF	Quantity
21033386405 HARTING	CBL FMALE TO WIRE LEAD 4P 1.64'	3
21349293405100 HARTING	CBL FMALE TO MALE 4P SHLD 32.8'	90
21349900495015 HARTING	CBL FMALE RA TO WIRE 4POS 4.92'	9
21348500882050 HARTING	CBL FMALE TO WIRE LEAD 8P 16.4'	172
21349700393015 HARTING	CBL FMALE TO WIRE LEAD 3P 4.92'	10
09472200005 HARTING	CBL MALE TO WIRE LEAD 4POS 9.84'	0
21348083380100 HARTING	CBL FMALE RA TO MALE 4POS 32.8'	20
2134C700477010 HARTING	CBL MALE TO WIRE LEAD 4POS 3.28'	13
21349400477010 HARTING	CBL MALE RA TO WIRE LD 4P 3.28'	5
21348500390050 HARTING	CBL FMALE TO WIRE LEAD 4P 16.4'	0
21349900495100 HARTING	CBL FMALE RA TO WIRE 4POS 32.8'	0
21349292477010 HARTING	CBL MALE TO MALE 4POS SHLD 3.28'	0
21349292405075 HARTING	CBL MALE TO MALE 4POS SHLD 24.6'	7
09478080003 HARTING	CBL MALE RA TO MALE RA 4P 4.92'	0
21348300388050 HARTING	CBL FMALE RA TO WIRE 4POS 16.4'	30
21348485585005 HARTING	CBL FMALE TO MALE 5POS 1.64'	18
21348100481020 HARTING	CBL FMALE TO WIRE LEAD 4P 6.56'	0
21035962506 HARTING	CBL ASSY 4POS F TO WIRE 0.3M	20
21348485484050 HARTING	CBL FMALE TO MALE 4POS 16.4'	236
21035991505 HARTING	M12 L-CODE 4+PE PIN MALE PANEL F	19

Circular Cable Assemblies

1. Overview

Circular Cable Assemblies are engineered interconnect solutions designed to transmit electrical signals or power through circular-shaped connectors. These assemblies combine multiple wires or cables terminated with circular connectors, ensuring reliable connectivity in demanding environments. Their importance spans across industries requiring robust, high-density, and high-performance connections, particularly in applications where space constraints and environmental resilience are critical.

2. Main Types and Functional Classification

Type	Functional Features	Application Examples
Circular Push-Pull	Quick-mating design with mechanical locking	Industrial automation, medical devices
Circular Threaded	Vibration-resistant threaded coupling	Aerospace, military equipment
Waterproof Circular	IP67+ sealing against liquids and dust	Outdoor telecom equipment, underwater sensors
High-Density Circular	Miniaturized contacts for compact designs	Avionics, robotics

3. Structure and Components

A typical circular cable assembly consists of:

Conductors: Copper/aluminum for signal/power transmission
Insulation: PVC/TPE/PUR jackets for dielectric protection
Shielding: Braided copper or foil for EMI/RFI protection
Connector Housing: Metal/plastic shells with precision contacts
Retention System: Latches, threads, or bayonet couplings

Modular designs allow customization with hybrid signal/power/RF configurations.

4. Key Technical Specifications

Parameter	Importance
Current Rating (Amps)	Determines power transmission capacity
Voltage Rating (Volts)	Defines dielectric strength and safety margins
Contact Resistance (m )	Impacts signal integrity and power efficiency
Operating Temperature (-40 C to +125 C)	Ensures reliability in extreme environments
Mating Cycles (1000-10,000)	Indicates mechanical durability
IP Rating (IP65-IP68)	Defines environmental protection level

5. Application Fields

Primary industries include:

Industrial Automation: PLCs, CNC machines, robotic arms
Telecommunications: 5G base stations, fiber optic enclosures
Medical Equipment: MRI scanners, patient monitoring systems
Aerospace: Avionics, flight control systems
Transportation: Rail signaling systems, EV charging stations

Case Study: In automotive manufacturing, circular assemblies enable high-vibration resistance connections in robotic welding cells operating 24/7.

6. Leading Manufacturers and Products

Manufacturer	Representative Product
TE Connectivity	DEUTSCH DT Series circular connectors
Amphenol	CIRCULAR C Series high-density connectors
Molex	Circular Rast 55 series for industrial control
Delphi	Weatherproof automotive circular connectors

7. Selection Guidelines

Key considerations:

Electrical requirements (current/voltage profiles)
Environmental conditions (temperature, moisture, chemical exposure)
Mechanical demands (vibration, mating cycles, cable bend radius)
Space constraints (connector size and orientation)
Industry-specific certifications (e.g., MIL-STD, UL, RoHS)

Recommend verifying compatibility with existing infrastructure and performing thermal cycling tests for critical applications.

8. Industry Trends

Emerging developments include:

Miniaturization while maintaining high contact density
Integration of fiber optics and high-speed data transmission
Adoption of composite materials for weight reduction
Growing demand for waterproof connectors in outdoor IoT deployments
Standardization of hybrid power/signal interfaces in EV charging

Market forecasts predict 8.2% CAGR through 2027 driven by industrial IoT and 5G infrastructure investments.